#include <rb_construction.h>

Inheritance diagram for libMesh::RBConstruction:

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Public Types
typedef RBConstruction	sys_type

typedef RBConstructionBase< LinearImplicitSystem >	Parent

typedef std::map< std::string, SparseMatrix< Number > * >::iterator	matrices_iterator

typedef std::map< std::string, SparseMatrix< Number > * >::const_iterator	const_matrices_iterator

typedef Number(*	ValueFunctionPointer) (const Point &p, const Parameters &Parameters, const std::string &sys_name, const std::string &unknown_name)

typedef Gradient(*	GradientFunctionPointer) (const Point &p, const Parameters &parameters, const std::string &sys_name, const std::string &unknown_name)

typedef std::map< std::string, NumericVector< Number > * >::iterator	vectors_iterator

typedef std::map< std::string, NumericVector< Number > * >::const_iterator	const_vectors_iterator

Public Member Functions
	RBConstruction (EquationSystems &es, const std::string &name, const unsigned int number)

virtual	~RBConstruction ()

virtual void	solve_for_matrix_and_rhs (LinearSolver< Number > &input_solver, SparseMatrix< Number > &input_matrix, NumericVector< Number > &input_rhs)

void	set_rb_evaluation (RBEvaluation &rb_eval_in)

RBEvaluation &	get_rb_evaluation ()

bool	is_rb_eval_initialized () const

RBThetaExpansion &	get_rb_theta_expansion ()

void	set_rb_assembly_expansion (RBAssemblyExpansion &rb_assembly_expansion_in)

RBAssemblyExpansion &	get_rb_assembly_expansion ()

sys_type &	system ()

virtual void	clear () override

virtual std::string	system_type () const override

virtual Real	truth_solve (int plot_solution)

virtual Real	train_reduced_basis (const bool resize_rb_eval_data=true)

void	enrich_basis_from_rhs_terms (const bool resize_rb_eval_data=true)

virtual Real	compute_max_error_bound ()

const RBParameters &	get_greedy_parameter (unsigned int i)

void	set_rel_training_tolerance (Real new_training_tolerance)

Real	get_rel_training_tolerance ()

void	set_abs_training_tolerance (Real new_training_tolerance)

Real	get_abs_training_tolerance ()

void	set_normalize_rb_bound_in_greedy (bool normalize_rb_bound_in_greedy_in)

bool	get_normalize_rb_bound_in_greedy ()

unsigned int	get_Nmax () const

virtual void	set_Nmax (unsigned int Nmax)

virtual void	load_basis_function (unsigned int i)

virtual void	load_rb_solution ()

SparseMatrix< Number > *	get_inner_product_matrix ()

SparseMatrix< Number > *	get_non_dirichlet_inner_product_matrix ()

SparseMatrix< Number > *	get_non_dirichlet_inner_product_matrix_if_avail ()

SparseMatrix< Number > *	get_Aq (unsigned int q)

SparseMatrix< Number > *	get_non_dirichlet_Aq (unsigned int q)

SparseMatrix< Number > *	get_non_dirichlet_Aq_if_avail (unsigned int q)

virtual void	initialize_rb_construction (bool skip_matrix_assembly=false, bool skip_vector_assembly=false)

NumericVector< Number > *	get_Fq (unsigned int q)

NumericVector< Number > *	get_non_dirichlet_Fq (unsigned int q)

NumericVector< Number > *	get_non_dirichlet_Fq_if_avail (unsigned int q)

NumericVector< Number > *	get_output_vector (unsigned int n, unsigned int q_l)

NumericVector< Number > *	get_non_dirichlet_output_vector (unsigned int n, unsigned int q_l)

virtual void	get_all_matrices (std::map< std::string, SparseMatrix< Number > *> &all_matrices)

virtual void	get_all_vectors (std::map< std::string, NumericVector< Number > *> &all_vectors)

virtual void	get_output_vectors (std::map< std::string, NumericVector< Number > *> &all_vectors)

virtual void	assemble_affine_expansion (bool skip_matrix_assembly, bool skip_vector_assembly)

void	assemble_inner_product_matrix (SparseMatrix< Number > *input_matrix, bool apply_dof_constraints=true)

void	assemble_Aq_matrix (unsigned int q, SparseMatrix< Number > *input_matrix, bool apply_dof_constraints=true)

void	assemble_Fq_vector (unsigned int q, NumericVector< Number > *input_vector, bool apply_dof_constraints=true)

void	add_scaled_Aq (Number scalar, unsigned int q_a, SparseMatrix< Number > *input_matrix, bool symmetrize)

virtual void	write_riesz_representors_to_files (const std::string &riesz_representors_dir, const bool write_binary_residual_representors)

virtual void	read_riesz_representors_from_files (const std::string &riesz_representors_dir, const bool write_binary_residual_representors)

virtual void	recompute_all_residual_terms (const bool compute_inner_products=true)

virtual void	process_parameters_file (const std::string &parameters_filename)

void	set_rb_construction_parameters (unsigned int n_training_samples_in, bool deterministic_training_in, unsigned int training_parameters_random_seed_in, bool quiet_mode_in, unsigned int Nmax_in, Real rel_training_tolerance_in, Real abs_training_tolerance_in, bool normalize_rb_error_bound_in_greedy_in, RBParameters mu_min_in, RBParameters mu_max_in, std::map< std::string, std::vector< Real >> discrete_parameter_values_in, std::map< std::string, bool > log_scaling)

virtual void	print_info ()

void	print_basis_function_orthogonality ()

unsigned int	get_delta_N () const

void	set_inner_product_assembly (ElemAssembly &inner_product_assembly_in)

ElemAssembly &	get_inner_product_assembly ()

void	zero_constrained_dofs_on_vector (NumericVector< Number > &vector)

void	set_convergence_assertion_flag (bool flag)

void	set_quiet_mode (bool quiet_mode_in)

bool	is_quiet () const

numeric_index_type	get_n_training_samples () const

numeric_index_type	get_local_n_training_samples () const

numeric_index_type	get_first_local_training_index () const

numeric_index_type	get_last_local_training_index () const

virtual void	initialize_training_parameters (const RBParameters &mu_min, const RBParameters &mu_max, unsigned int n_training_parameters, std::map< std::string, bool > log_param_scale, bool deterministic=true)

virtual void	load_training_set (std::map< std::string, std::vector< Number >> &new_training_set)

void	broadcast_parameters (unsigned int proc_id)

void	set_training_random_seed (unsigned int seed)

void	set_deterministic_training_parameter_name (const std::string &name)

const std::string &	get_deterministic_training_parameter_name () const

void	set_deterministic_training_parameter_repeats (unsigned int repeats)

unsigned int	get_deterministic_training_parameter_repeats () const

virtual void	reinit () override

virtual void	assemble () override

virtual void	restrict_solve_to (const SystemSubset *subset, const SubsetSolveMode subset_solve_mode=SUBSET_ZERO) override

virtual void	solve () override

virtual LinearSolver< Number > *	get_linear_solver () const override

virtual void	release_linear_solver (LinearSolver< Number > *) const override

virtual void	assembly (bool get_residual, bool get_jacobian, bool apply_heterogeneous_constraints=false, bool apply_no_constraints=false) override

unsigned int	n_linear_iterations () const

Real	final_linear_residual () const

void	attach_shell_matrix (ShellMatrix< Number > *shell_matrix)

void	detach_shell_matrix ()

ShellMatrix< Number > *	get_shell_matrix ()

virtual void	disable_cache () override

virtual std::pair< unsigned int, Real >	get_linear_solve_parameters () const

virtual void	assemble_residual_derivatives (const ParameterVector &parameters) override

virtual std::pair< unsigned int, Real >	sensitivity_solve (const ParameterVector &parameters) override

virtual std::pair< unsigned int, Real >	weighted_sensitivity_solve (const ParameterVector &parameters, const ParameterVector &weights) override

virtual std::pair< unsigned int, Real >	adjoint_solve (const QoISet &qoi_indices=QoISet()) override

virtual std::pair< unsigned int, Real >	weighted_sensitivity_adjoint_solve (const ParameterVector &parameters, const ParameterVector &weights, const QoISet &qoi_indices=QoISet()) override

virtual void	adjoint_qoi_parameter_sensitivity (const QoISet &qoi_indices, const ParameterVector &parameters, SensitivityData &sensitivities) override

virtual void	forward_qoi_parameter_sensitivity (const QoISet &qoi_indices, const ParameterVector &parameters, SensitivityData &sensitivities) override

virtual void	qoi_parameter_hessian (const QoISet &qoi_indices, const ParameterVector &parameters, SensitivityData &hessian) override

virtual void	qoi_parameter_hessian_vector_product (const QoISet &qoi_indices, const ParameterVector &parameters, const ParameterVector &vector, SensitivityData &product) override

SparseMatrix< Number > &	add_matrix (const std::string &mat_name)

void	remove_matrix (const std::string &mat_name)

bool	have_matrix (const std::string &mat_name) const

const SparseMatrix< Number > *	request_matrix (const std::string &mat_name) const

SparseMatrix< Number > *	request_matrix (const std::string &mat_name)

const SparseMatrix< Number > &	get_matrix (const std::string &mat_name) const

SparseMatrix< Number > &	get_matrix (const std::string &mat_name)

virtual unsigned int	n_matrices () const override

virtual void	assemble_qoi (const QoISet &qoi_indices=QoISet()) override

virtual void	assemble_qoi_derivative (const QoISet &qoi_indices=QoISet(), bool include_liftfunc=true, bool apply_constraints=true) override

void	init ()

virtual void	reinit_constraints ()

bool	is_initialized ()

virtual void	update ()

bool	is_adjoint_already_solved () const

void	set_adjoint_already_solved (bool setting)

virtual void	qoi_parameter_sensitivity (const QoISet &qoi_indices, const ParameterVector &parameters, SensitivityData &sensitivities)

virtual bool	compare (const System &other_system, const Real threshold, const bool verbose) const

const std::string &	name () const

void	project_solution (FunctionBase< Number > f, FunctionBase< Gradient > g=nullptr) const

void	project_solution (FEMFunctionBase< Number > f, FEMFunctionBase< Gradient > g=nullptr) const

void	project_solution (ValueFunctionPointer fptr, GradientFunctionPointer gptr, const Parameters &parameters) const

void	project_vector (NumericVector< Number > &new_vector, FunctionBase< Number > f, FunctionBase< Gradient > g=nullptr, int is_adjoint=-1) const

void	project_vector (NumericVector< Number > &new_vector, FEMFunctionBase< Number > f, FEMFunctionBase< Gradient > g=nullptr, int is_adjoint=-1) const

void	project_vector (ValueFunctionPointer fptr, GradientFunctionPointer gptr, const Parameters &parameters, NumericVector< Number > &new_vector, int is_adjoint=-1) const

void	boundary_project_solution (const std::set< boundary_id_type > &b, const std::vector< unsigned int > &variables, FunctionBase< Number > f, FunctionBase< Gradient > g=nullptr)

void	boundary_project_solution (const std::set< boundary_id_type > &b, const std::vector< unsigned int > &variables, ValueFunctionPointer fptr, GradientFunctionPointer gptr, const Parameters &parameters)

void	boundary_project_vector (const std::set< boundary_id_type > &b, const std::vector< unsigned int > &variables, NumericVector< Number > &new_vector, FunctionBase< Number > f, FunctionBase< Gradient > g=nullptr, int is_adjoint=-1) const

void	boundary_project_vector (const std::set< boundary_id_type > &b, const std::vector< unsigned int > &variables, ValueFunctionPointer fptr, GradientFunctionPointer gptr, const Parameters &parameters, NumericVector< Number > &new_vector, int is_adjoint=-1) const

unsigned int	number () const

void	update_global_solution (std::vector< Number > &global_soln) const

void	update_global_solution (std::vector< Number > &global_soln, const processor_id_type dest_proc) const

const MeshBase &	get_mesh () const

MeshBase &	get_mesh ()

const DofMap &	get_dof_map () const

DofMap &	get_dof_map ()

const EquationSystems &	get_equation_systems () const

EquationSystems &	get_equation_systems ()

bool	active () const

void	activate ()

void	deactivate ()

void	set_basic_system_only ()

vectors_iterator	vectors_begin ()

const_vectors_iterator	vectors_begin () const

vectors_iterator	vectors_end ()

const_vectors_iterator	vectors_end () const

NumericVector< Number > &	add_vector (const std::string &vec_name, const bool projections=true, const ParallelType type=PARALLEL)

void	remove_vector (const std::string &vec_name)

bool &	project_solution_on_reinit (void)

bool	have_vector (const std::string &vec_name) const

const NumericVector< Number > *	request_vector (const std::string &vec_name) const

NumericVector< Number > *	request_vector (const std::string &vec_name)

const NumericVector< Number > *	request_vector (const unsigned int vec_num) const

NumericVector< Number > *	request_vector (const unsigned int vec_num)

const NumericVector< Number > &	get_vector (const std::string &vec_name) const

NumericVector< Number > &	get_vector (const std::string &vec_name)

const NumericVector< Number > &	get_vector (const unsigned int vec_num) const

NumericVector< Number > &	get_vector (const unsigned int vec_num)

const std::string &	vector_name (const unsigned int vec_num) const

const std::string &	vector_name (const NumericVector< Number > &vec_reference) const

void	set_vector_as_adjoint (const std::string &vec_name, int qoi_num)

int	vector_is_adjoint (const std::string &vec_name) const

void	set_vector_preservation (const std::string &vec_name, bool preserve)

bool	vector_preservation (const std::string &vec_name) const

NumericVector< Number > &	add_adjoint_solution (unsigned int i=0)

NumericVector< Number > &	get_adjoint_solution (unsigned int i=0)

const NumericVector< Number > &	get_adjoint_solution (unsigned int i=0) const

NumericVector< Number > &	add_sensitivity_solution (unsigned int i=0)

NumericVector< Number > &	get_sensitivity_solution (unsigned int i=0)

const NumericVector< Number > &	get_sensitivity_solution (unsigned int i=0) const

NumericVector< Number > &	add_weighted_sensitivity_adjoint_solution (unsigned int i=0)

NumericVector< Number > &	get_weighted_sensitivity_adjoint_solution (unsigned int i=0)

const NumericVector< Number > &	get_weighted_sensitivity_adjoint_solution (unsigned int i=0) const

NumericVector< Number > &	add_weighted_sensitivity_solution ()

NumericVector< Number > &	get_weighted_sensitivity_solution ()

const NumericVector< Number > &	get_weighted_sensitivity_solution () const

NumericVector< Number > &	add_adjoint_rhs (unsigned int i=0)

NumericVector< Number > &	get_adjoint_rhs (unsigned int i=0)

const NumericVector< Number > &	get_adjoint_rhs (unsigned int i=0) const

NumericVector< Number > &	add_sensitivity_rhs (unsigned int i=0)

NumericVector< Number > &	get_sensitivity_rhs (unsigned int i=0)

const NumericVector< Number > &	get_sensitivity_rhs (unsigned int i=0) const

unsigned int	n_vectors () const

unsigned int	n_vars () const

unsigned int	n_variable_groups () const

unsigned int	n_components () const

dof_id_type	n_dofs () const

dof_id_type	n_active_dofs () const

dof_id_type	n_constrained_dofs () const

dof_id_type	n_local_constrained_dofs () const

dof_id_type	n_local_dofs () const

unsigned int	add_variable (const std::string &var, const FEType &type, const std::set< subdomain_id_type > *const active_subdomains=nullptr)

unsigned int	add_variable (const std::string &var, const Order order=FIRST, const FEFamily=LAGRANGE, const std::set< subdomain_id_type > *const active_subdomains=nullptr)

unsigned int	add_variables (const std::vector< std::string > &vars, const FEType &type, const std::set< subdomain_id_type > *const active_subdomains=nullptr)

unsigned int	add_variables (const std::vector< std::string > &vars, const Order order=FIRST, const FEFamily=LAGRANGE, const std::set< subdomain_id_type > *const active_subdomains=nullptr)

const Variable &	variable (unsigned int var) const

const VariableGroup &	variable_group (unsigned int vg) const

bool	has_variable (const std::string &var) const

const std::string &	variable_name (const unsigned int i) const

unsigned short int	variable_number (const std::string &var) const

void	get_all_variable_numbers (std::vector< unsigned int > &all_variable_numbers) const

unsigned int	variable_scalar_number (const std::string &var, unsigned int component) const

unsigned int	variable_scalar_number (unsigned int var_num, unsigned int component) const

const FEType &	variable_type (const unsigned int i) const

const FEType &	variable_type (const std::string &var) const

bool	identify_variable_groups () const

void	identify_variable_groups (const bool)

Real	calculate_norm (const NumericVector< Number > &v, unsigned int var, FEMNormType norm_type, std::set< unsigned int > *skip_dimensions=nullptr) const

Real	calculate_norm (const NumericVector< Number > &v, const SystemNorm &norm, std::set< unsigned int > *skip_dimensions=nullptr) const

void	read_header (Xdr &io, const std::string &version, const bool read_header=true, const bool read_additional_data=true, const bool read_legacy_format=false)

void	read_legacy_data (Xdr &io, const bool read_additional_data=true)

template<typename ValType >
void	read_serialized_data (Xdr &io, const bool read_additional_data=true)

void	read_serialized_data (Xdr &io, const bool read_additional_data=true)

template<typename InValType >
std::size_t	read_serialized_vectors (Xdr &io, const std::vector< NumericVector< Number > *> &vectors) const

std::size_t	read_serialized_vectors (Xdr &io, const std::vector< NumericVector< Number > *> &vectors) const

template<typename InValType >
void	read_parallel_data (Xdr &io, const bool read_additional_data)

void	read_parallel_data (Xdr &io, const bool read_additional_data)

void	write_header (Xdr &io, const std::string &version, const bool write_additional_data) const

void	write_serialized_data (Xdr &io, const bool write_additional_data=true) const

std::size_t	write_serialized_vectors (Xdr &io, const std::vector< const NumericVector< Number > *> &vectors) const

void	write_parallel_data (Xdr &io, const bool write_additional_data) const

std::string	get_info () const

void	attach_init_function (void fptr(EquationSystems &es, const std::string &name))

void	attach_init_object (Initialization &init)

void	attach_assemble_function (void fptr(EquationSystems &es, const std::string &name))

void	attach_assemble_object (Assembly &assemble)

void	attach_constraint_function (void fptr(EquationSystems &es, const std::string &name))

void	attach_constraint_object (Constraint &constrain)

void	attach_QOI_function (void fptr(EquationSystems &es, const std::string &name, const QoISet &qoi_indices))

void	attach_QOI_object (QOI &qoi)

void	attach_QOI_derivative (void fptr(EquationSystems &es, const std::string &name, const QoISet &qoi_indices, bool include_liftfunc, bool apply_constraints))

void	attach_QOI_derivative_object (QOIDerivative &qoi_derivative)

virtual void	user_initialization ()

virtual void	user_assembly ()

virtual void	user_constrain ()

virtual void	user_QOI (const QoISet &qoi_indices)

virtual void	user_QOI_derivative (const QoISet &qoi_indices=QoISet(), bool include_liftfunc=true, bool apply_constraints=true)

virtual void	re_update ()

virtual void	restrict_vectors ()

virtual void	prolong_vectors ()

Number	current_solution (const dof_id_type global_dof_number) const

unsigned int	n_qois () const

Number	point_value (unsigned int var, const Point &p, const bool insist_on_success=true) const

Number	point_value (unsigned int var, const Point &p, const Elem &e) const

Number	point_value (unsigned int var, const Point &p, const Elem *e) const

Gradient	point_gradient (unsigned int var, const Point &p, const bool insist_on_success=true) const

Gradient	point_gradient (unsigned int var, const Point &p, const Elem &e) const

Gradient	point_gradient (unsigned int var, const Point &p, const Elem *e) const

Tensor	point_hessian (unsigned int var, const Point &p, const bool insist_on_success=true) const

Tensor	point_hessian (unsigned int var, const Point &p, const Elem &e) const

Tensor	point_hessian (unsigned int var, const Point &p, const Elem *e) const

void	local_dof_indices (const unsigned int var, std::set< dof_id_type > &var_indices) const

void	zero_variable (NumericVector< Number > &v, unsigned int var_num) const

bool &	hide_output ()

void	projection_matrix (SparseMatrix< Number > &proj_mat) const

const Parallel::Communicator &	comm () const

processor_id_type	n_processors () const

processor_id_type	processor_id () const

void	initialize_parameters (const RBParameters &mu_min_in, const RBParameters &mu_max_in, const std::map< std::string, std::vector< Real >> &discrete_parameter_values)

void	initialize_parameters (const RBParametrized &rb_parametrized)

unsigned int	get_n_params () const

unsigned int	get_n_continuous_params () const

unsigned int	get_n_discrete_params () const

std::set< std::string >	get_parameter_names () const

const RBParameters &	get_parameters () const

void	set_parameters (const RBParameters &params)

const RBParameters &	get_parameters_min () const

const RBParameters &	get_parameters_max () const

Real	get_parameter_min (const std::string &param_name) const

Real	get_parameter_max (const std::string &param_name) const

void	print_parameters () const

void	write_parameter_data_to_files (const std::string &continuous_param_file_name, const std::string &discrete_param_file_name, const bool write_binary_data)

void	read_parameter_data_from_files (const std::string &continuous_param_file_name, const std::string &discrete_param_file_name, const bool read_binary_data)

bool	is_discrete_parameter (const std::string &mu_name) const

const std::map< std::string, std::vector< Real > > &	get_discrete_parameter_values () const

void	print_discrete_parameter_values () const

Static Public Member Functions
static std::unique_ptr< DirichletBoundary >	build_zero_dirichlet_boundary_object ()

static std::string	get_info ()

static std::string	get_info ()

static void	print_info (std::ostream &out=libMesh::out)

static void	print_info (std::ostream &out=libMesh::out)

static unsigned int	n_objects ()

static unsigned int	n_objects ()

static void	enable_print_counter_info ()

static void	enable_print_counter_info ()

static void	disable_print_counter_info ()

static void	disable_print_counter_info ()

static Real	get_closest_value (Real value, const std::vector< Real > &list_of_values)

Public Attributes
std::vector< Real >	training_error_bounds

std::unique_ptr< LinearSolver< Number > >	inner_product_solver

LinearSolver< Number > *	extra_linear_solver

std::unique_ptr< SparseMatrix< Number > >	inner_product_matrix

std::vector< Number >	truth_outputs

std::vector< std::vector< Number > >	output_dual_innerprods

std::vector< std::unique_ptr< NumericVector< Number > > >	Fq_representor

std::vector< Number >	Fq_representor_innerprods

bool	skip_residual_in_train_reduced_basis

bool	exit_on_repeated_greedy_parameters

bool	impose_internal_fluxes

bool	skip_degenerate_sides

bool	compute_RB_inner_product

bool	store_non_dirichlet_operators

bool	use_empty_rb_solve_in_greedy

bool	Fq_representor_innerprods_computed

std::unique_ptr< LinearSolver< Number > >	linear_solver

SparseMatrix< Number > *	matrix

bool	zero_out_matrix_and_rhs

NumericVector< Number > *	rhs

bool	assemble_before_solve

bool	use_fixed_solution

int	extra_quadrature_order

std::unique_ptr< NumericVector< Number > >	solution

std::unique_ptr< NumericVector< Number > >	current_local_solution

Real	time

std::vector< Number >	qoi

bool	verbose_mode

Protected Types
typedef std::map< std::string, std::pair< unsigned int, unsigned int > >	Counts

typedef std::map< std::string, std::pair< unsigned int, unsigned int > >	Counts

Protected Member Functions
virtual void	allocate_data_structures ()

virtual void	truth_assembly ()

virtual std::unique_ptr< DGFEMContext >	build_context ()

virtual SparseMatrix< Number > &	get_matrix_for_output_dual_solves ()

virtual bool	greedy_termination_test (Real abs_greedy_error, Real initial_greedy_error, int count)

void	update_greedy_param_list ()

void	add_scaled_matrix_and_vector (Number scalar, ElemAssembly elem_assembly, SparseMatrix< Number > input_matrix, NumericVector< Number > *input_vector, bool symmetrize=false, bool apply_dof_constraints=true)

virtual void	set_context_solution_vec (NumericVector< Number > &vec)

virtual void	assemble_misc_matrices ()

virtual void	assemble_all_affine_operators ()

virtual void	assemble_all_affine_vectors ()

virtual void	assemble_all_output_vectors ()

virtual void	compute_output_dual_innerprods ()

virtual void	compute_Fq_representor_innerprods (bool compute_inner_products=true)

virtual void	enrich_RB_space ()

virtual void	update_system ()

virtual Real	get_RB_error_bound ()

virtual void	update_RB_system_matrices ()

virtual void	update_residual_terms (bool compute_inner_products=true)

virtual void	init_context (FEMContext &)

bool	get_convergence_assertion_flag () const

void	check_convergence (LinearSolver< Number > &input_solver)

virtual void	init_data ()

RBParameters	get_params_from_training_set (unsigned int index)

void	set_params_from_training_set (unsigned int index)

virtual void	set_params_from_training_set_and_broadcast (unsigned int index)

virtual void	init_matrices ()

void	project_vector (NumericVector< Number > &, int is_adjoint=-1) const

void	project_vector (const NumericVector< Number > &, NumericVector< Number > &, int is_adjoint=-1) const

void	increment_constructor_count (const std::string &name)

void	increment_constructor_count (const std::string &name)

void	increment_destructor_count (const std::string &name)

void	increment_destructor_count (const std::string &name)

Static Protected Member Functions
static void	get_global_max_error_pair (const Parallel::Communicator &communicator, std::pair< numeric_index_type, Real > &error_pair)

static void	generate_training_parameters_random (const Parallel::Communicator &communicator, std::map< std::string, bool > log_param_scale, std::map< std::string, std::unique_ptr< NumericVector< Number >>> &training_parameters_in, unsigned int n_training_samples_in, const RBParameters &min_parameters, const RBParameters &max_parameters, int training_parameters_random_seed=-1, bool serial_training_set=false)

static void	generate_training_parameters_deterministic (const Parallel::Communicator &communicator, std::map< std::string, bool > log_param_scale, std::map< std::string, std::unique_ptr< NumericVector< Number >>> &training_parameters_in, unsigned int n_training_samples_in, const RBParameters &min_parameters, const RBParameters &max_parameters, bool serial_training_set=false)

Protected Attributes
unsigned int	Nmax

unsigned int	delta_N

bool	output_dual_innerprods_computed

bool	assert_convergence

bool	quiet_mode

bool	serial_training_set

std::unique_ptr< NumericVector< Number > >	inner_product_storage_vector

unsigned int	_n_linear_iterations

Real	_final_linear_residual

ShellMatrix< Number > *	_shell_matrix

const SystemSubset *	_subset

SubsetSolveMode	_subset_solve_mode

const Parallel::Communicator &	_communicator

Static Protected Attributes
static Counts	_counts

static Counts	_counts

static Threads::atomic< unsigned int >	_n_objects

static Threads::atomic< unsigned int >	_n_objects

static Threads::spin_mutex	_mutex

static Threads::spin_mutex	_mutex

static bool	_enable_print_counter = true

static bool	_enable_print_counter = true

Private Attributes
RBEvaluation *	rb_eval

RBAssemblyExpansion *	rb_assembly_expansion

ElemAssembly *	inner_product_assembly

std::vector< std::unique_ptr< SparseMatrix< Number > > >	Aq_vector

std::vector< std::unique_ptr< NumericVector< Number > > >	Fq_vector

std::vector< std::vector< std::unique_ptr< NumericVector< Number > > > >	outputs_vector

std::vector< std::unique_ptr< SparseMatrix< Number > > >	non_dirichlet_Aq_vector

std::vector< std::unique_ptr< NumericVector< Number > > >	non_dirichlet_Fq_vector

std::vector< std::vector< std::unique_ptr< NumericVector< Number > > > >	non_dirichlet_outputs_vector

std::unique_ptr< SparseMatrix< Number > >	non_dirichlet_inner_product_matrix

Real	rel_training_tolerance

Real	abs_training_tolerance

bool	normalize_rb_bound_in_greedy

Detailed Description

This class is part of the rbOOmit framework.

RBConstruction implements the Construction stage of the certified reduced basis method for steady-state elliptic parametrized PDEs.

Author: David J. Knezevic

Date: 2009

Definition at line 53 of file rb_construction.h.

Member Typedef Documentation

◆ const_matrices_iterator

typedef std::map<std::string, SparseMatrix<Number> *>::const_iterator libMesh::ImplicitSystem::const_matrices_iterator

inherited

Definition at line 306 of file implicit_system.h.

◆ const_vectors_iterator

typedef std::map<std::string, NumericVector<Number> *>::const_iterator libMesh::System::const_vectors_iterator

inherited

Definition at line 749 of file system.h.

◆ Counts [1/2]

typedef std::map<std::string, std::pair<unsigned int, unsigned int> > libMesh::ReferenceCounter::Counts

protectedinherited

Data structure to log the information. The log is identified by the class name.

Definition at line 117 of file reference_counter.h.

◆ Counts [2/2]

typedef std::map<std::string, std::pair<unsigned int, unsigned int> > libMesh::ReferenceCounter::Counts

protectedinherited

Data structure to log the information. The log is identified by the class name.

Definition at line 117 of file reference_counter.h.

◆ GradientFunctionPointer

typedef Gradient(* libMesh::System::GradientFunctionPointer) (const Point &p, const Parameters &parameters, const std::string &sys_name, const std::string &unknown_name)

inherited

Definition at line 524 of file system.h.

◆ matrices_iterator

typedef std::map<std::string, SparseMatrix<Number> *>::iterator libMesh::ImplicitSystem::matrices_iterator

inherited

Matrix iterator typedefs.

Definition at line 305 of file implicit_system.h.

◆ Parent

typedef RBConstructionBase<LinearImplicitSystem> libMesh::RBConstruction::Parent

The type of the parent.

Definition at line 122 of file rb_construction.h.

◆ sys_type

typedef RBConstruction libMesh::RBConstruction::sys_type

The type of system.

Definition at line 73 of file rb_construction.h.

◆ ValueFunctionPointer

typedef Number(* libMesh::System::ValueFunctionPointer) (const Point &p, const Parameters &Parameters, const std::string &sys_name, const std::string &unknown_name)

inherited

Projects arbitrary functions onto the current solution. The function value fptr and its gradient gptr are represented by function pointers. A gradient gptr is only required/used for projecting onto finite element spaces with continuous derivatives.

Definition at line 520 of file system.h.

◆ vectors_iterator

typedef std::map<std::string, NumericVector<Number> *>::iterator libMesh::System::vectors_iterator

inherited

Vector iterator typedefs.

Definition at line 748 of file system.h.

Constructor & Destructor Documentation

◆ RBConstruction()

libMesh::RBConstruction::RBConstruction	(	EquationSystems &	es,
		const std::string &	name,
		const unsigned int	number
	)

Constructor. Optionally initializes required data structures.

◆ ~RBConstruction()

virtual libMesh::RBConstruction::~RBConstruction ( )

virtual

Destructor.

Member Function Documentation

◆ activate()

void libMesh::System::activate ( )

inlineinherited

Activates the system. Only active systems are solved.

Definition at line 2073 of file system.h.

References libMesh::System::_active.

 {
   _active = true;
 }

◆ active()

bool libMesh::System::active ( ) const

inlineinherited

Returns: true if the system is active, false otherwise. An active system will be solved.

Definition at line 2065 of file system.h.

References libMesh::System::_active.

 {
   return _active;
 }

◆ add_adjoint_rhs()

NumericVector< Number > & libMesh::System::add_adjoint_rhs ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's adjoint rhs vectors, by default the one corresponding to the first qoi. Creates the vector if it doesn't already exist.

Definition at line 1021 of file system.C.

References libMesh::System::add_vector().

Referenced by libMesh::ExplicitSystem::assemble_qoi_derivative(), and libMesh::FEMSystem::assemble_qoi_derivative().

 {
   std::ostringstream adjoint_rhs_name;
   adjoint_rhs_name << "adjoint_rhs" << i;
 
   return this->add_vector(adjoint_rhs_name.str(), false);
 }

◆ add_adjoint_solution()

NumericVector< Number > & libMesh::System::add_adjoint_solution ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's adjoint solution vectors, by default the one corresponding to the first qoi. Creates the vector if it doesn't already exist.

Definition at line 957 of file system.C.

References libMesh::System::add_vector(), and libMesh::System::set_vector_as_adjoint().

Referenced by libMesh::ImplicitSystem::adjoint_solve().

 {
   std::ostringstream adjoint_name;
   adjoint_name << "adjoint_solution" << i;
 
   NumericVector<Number> & returnval = this->add_vector(adjoint_name.str());
   this->set_vector_as_adjoint(adjoint_name.str(), i);
   return returnval;
 }

◆ add_matrix()

SparseMatrix< Number > & libMesh::ImplicitSystem::add_matrix ( const std::string & mat_name )

inherited

Adds the additional matrix mat_name to this system. Only allowed prior to assemble(). All additional matrices have the same sparsity pattern as the matrix used during solution. When not System but the user wants to initialize the mayor matrix, then all the additional matrices, if existent, have to be initialized by the user, too.

Definition at line 203 of file implicit_system.C.

References libMesh::ImplicitSystem::_can_add_matrices, libMesh::ImplicitSystem::_matrices, libMesh::SparseMatrix< T >::build(), libMesh::ParallelObject::comm(), and libMesh::ImplicitSystem::have_matrix().

Referenced by libMesh::ImplicitSystem::add_system_matrix(), libMesh::EigenTimeSolver::init(), and libMesh::NewmarkSystem::NewmarkSystem().

 {
   // only add matrices before initializing...
   if (!_can_add_matrices)
     libmesh_error_msg("ERROR: Too late.  Cannot add matrices to the system after initialization"
                       << "\n any more.  You should have done this earlier.");
 
   // Return the matrix if it is already there.
   if (this->have_matrix(mat_name))
     return *(_matrices[mat_name]);
 
   // Otherwise build the matrix and return it.
   SparseMatrix<Number> * buf = SparseMatrix<Number>::build(this->comm()).release();
   _matrices.insert (std::make_pair (mat_name, buf));
 
   return *buf;
 }

◆ add_scaled_Aq()

void libMesh::RBConstruction::add_scaled_Aq	(	Number	scalar,
		unsigned int	q_a,
		SparseMatrix< Number > *	input_matrix,
		bool	symmetrize
	)

Add the scaled q^th affine matrix to input_matrix. If symmetrize==true, then we symmetrize Aq before adding it.

◆ add_scaled_matrix_and_vector()

void libMesh::RBConstruction::add_scaled_matrix_and_vector	(	Number	scalar,
		ElemAssembly *	elem_assembly,
		SparseMatrix< Number > *	input_matrix,
		NumericVector< Number > *	input_vector,
		bool	symmetrize = `false`,
		bool	apply_dof_constraints = `true`
	)

protected

This function loops over the mesh and applies the specified interior and/or boundary assembly routines, then adds the scaled result to input_matrix and/or input_vector. If symmetrize==true then we assemble the symmetric part of the matrix, 0.5*(A + A^T)

◆ add_sensitivity_rhs()

NumericVector< Number > & libMesh::System::add_sensitivity_rhs ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's sensitivity rhs vectors, by default the one corresponding to the first parameter. Creates the vector if it doesn't already exist.

Definition at line 1051 of file system.C.

References libMesh::System::add_vector().

Referenced by libMesh::ImplicitSystem::assemble_residual_derivatives().

 {
   std::ostringstream sensitivity_rhs_name;
   sensitivity_rhs_name << "sensitivity_rhs" << i;
 
   return this->add_vector(sensitivity_rhs_name.str(), false);
 }

◆ add_sensitivity_solution()

NumericVector< Number > & libMesh::System::add_sensitivity_solution ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's solution sensitivity vectors, by default the one corresponding to the first parameter. Creates the vector if it doesn't already exist.

Definition at line 906 of file system.C.

References libMesh::System::add_vector().

Referenced by libMesh::ImplicitSystem::sensitivity_solve().

 {
   std::ostringstream sensitivity_name;
   sensitivity_name << "sensitivity_solution" << i;
 
   return this->add_vector(sensitivity_name.str());
 }

◆ add_variable() [1/2]

unsigned int libMesh::System::add_variable	(	const std::string &	var,
		const FEType &	type,
		const std::set< subdomain_id_type > *const	active_subdomains = `nullptr`
	)

inherited

Adds the variable var to the list of variables for this system.

Returns: The index number for the new variable.

Definition at line 1081 of file system.C.

References libMesh::System::_variable_groups, libMesh::System::_variable_numbers, libMesh::System::_variables, libMesh::System::add_variables(), libMesh::VariableGroup::append(), libMesh::System::identify_variable_groups(), libMesh::System::is_initialized(), libMesh::System::n_variable_groups(), libMesh::System::n_vars(), libMesh::System::number(), libMesh::System::variable_name(), and libMesh::System::variable_type().

Referenced by libMesh::DifferentiableSystem::add_second_order_dot_vars(), libMesh::System::add_variable(), libMesh::ErrorVector::plot_error(), and libMesh::System::read_header().

 {
   libmesh_assert(!this->is_initialized());
 
   // Make sure the variable isn't there already
   // or if it is, that it's the type we want
   for (unsigned int v=0; v<this->n_vars(); v++)
     if (this->variable_name(v) == var)
       {
         if (this->variable_type(v) == type)
           return _variables[v].number();
 
         libmesh_error_msg("ERROR: incompatible variable " << var << " has already been added for this system!");
       }
 
   // Optimize for VariableGroups here - if the user is adding multiple
   // variables of the same FEType and subdomain restriction, catch
   // that here and add them as members of the same VariableGroup.
   //
   // start by setting this flag to whatever the user has requested
   // and then consider the conditions which should negate it.
   bool should_be_in_vg = this->identify_variable_groups();
 
   // No variable groups, nothing to add to
   if (!this->n_variable_groups())
     should_be_in_vg = false;
 
   else
     {
       VariableGroup & vg(_variable_groups.back());
 
       // get a pointer to their subdomain restriction, if any.
       const std::set<subdomain_id_type> * const
         their_active_subdomains (vg.implicitly_active() ?
                                  nullptr : &vg.active_subdomains());
 
       // Different types?
       if (vg.type() != type)
         should_be_in_vg = false;
 
       // they are restricted, we aren't?
       if (their_active_subdomains && !active_subdomains)
         should_be_in_vg = false;
 
       // they aren't restricted, we are?
       if (!their_active_subdomains && active_subdomains)
         should_be_in_vg = false;
 
       if (their_active_subdomains && active_subdomains)
         // restricted to different sets?
         if (*their_active_subdomains != *active_subdomains)
           should_be_in_vg = false;
 
       // OK, after all that, append the variable to the vg if none of the conditions
       // were violated
       if (should_be_in_vg)
         {
           const unsigned short curr_n_vars = cast_int<unsigned short>
             (this->n_vars());
 
           vg.append (var);
 
           _variables.push_back(vg(vg.n_variables()-1));
           _variable_numbers[var] = curr_n_vars;
           return curr_n_vars;
         }
     }
 
   // otherwise, fall back to adding a single variable group
   return this->add_variables (std::vector<std::string>(1, var),
                               type,
                               active_subdomains);
 }

◆ add_variable() [2/2]

unsigned int libMesh::System::add_variable	(	const std::string &	var,
		const Order	order = `FIRST`,
		const FEFamily	family = `LAGRANGE`,
		const std::set< subdomain_id_type > *const	active_subdomains = `nullptr`
	)

inherited

Adds the variable var to the list of variables for this system. Same as before, but assumes LAGRANGE as default value for FEType.family.

Definition at line 1159 of file system.C.

References libMesh::System::add_variable().

 {
   return this->add_variable(var,
                             FEType(order, family),
                             active_subdomains);
 }

◆ add_variables() [1/2]

unsigned int libMesh::System::add_variables	(	const std::vector< std::string > &	vars,
		const FEType &	type,
		const std::set< subdomain_id_type > *const	active_subdomains = `nullptr`
	)

inherited

Adds the variable var to the list of variables for this system.

Returns: The index number for the new variable.

Definition at line 1171 of file system.C.

References libMesh::System::_variable_groups, libMesh::System::_variable_numbers, libMesh::System::_variables, libMesh::System::is_initialized(), libMesh::System::n_components(), libMesh::System::n_vars(), libMesh::System::number(), libMesh::System::variable_name(), and libMesh::System::variable_type().

Referenced by libMesh::System::add_variable(), and libMesh::System::add_variables().

 {
   libmesh_assert(!this->is_initialized());
 
   // Make sure the variable isn't there already
   // or if it is, that it's the type we want
   for (std::size_t ov=0; ov<vars.size(); ov++)
     for (unsigned int v=0; v<this->n_vars(); v++)
       if (this->variable_name(v) == vars[ov])
         {
           if (this->variable_type(v) == type)
             return _variables[v].number();
 
           libmesh_error_msg("ERROR: incompatible variable " << vars[ov] << " has already been added for this system!");
         }
 
   const unsigned short curr_n_vars = cast_int<unsigned short>
     (this->n_vars());
 
   const unsigned int next_first_component = this->n_components();
 
   // Add the variable group to the list
   _variable_groups.push_back((active_subdomains == nullptr) ?
                              VariableGroup(this, vars, curr_n_vars,
                                            next_first_component, type) :
                              VariableGroup(this, vars, curr_n_vars,
                                            next_first_component, type, *active_subdomains));
 
   const VariableGroup & vg (_variable_groups.back());
 
   // Add each component of the group individually
   for (auto v : IntRange<unsigned int>(0, vars.size()))
     {
       _variables.push_back (vg(v));
       _variable_numbers[vars[v]] = cast_int<unsigned short>
         (curr_n_vars+v);
     }
 
   libmesh_assert_equal_to ((curr_n_vars+vars.size()), this->n_vars());
 
   // BSK - Defer this now to System::init_data() so we can detect
   // VariableGroups 12/28/2012
   // // Add the variable group to the _dof_map
   // _dof_map->add_variable_group (vg);
 
   // Return the number of the new variable
   return cast_int<unsigned int>(curr_n_vars+vars.size()-1);
 }

◆ add_variables() [2/2]

unsigned int libMesh::System::add_variables	(	const std::vector< std::string > &	vars,
		const Order	order = `FIRST`,
		const FEFamily	family = `LAGRANGE`,
		const std::set< subdomain_id_type > *const	active_subdomains = `nullptr`
	)

inherited

Adds the variable var to the list of variables for this system. Same as before, but assumes LAGRANGE as default value for FEType.family.

Definition at line 1224 of file system.C.

References libMesh::System::add_variables().

 {
   return this->add_variables(vars,
                              FEType(order, family),
                              active_subdomains);
 }

◆ add_vector()

NumericVector< Number > & libMesh::System::add_vector	(	const std::string &	vec_name,
		const bool	projections = `true`,
		const ParallelType	type = `PARALLEL`
	)

inherited

Adds the additional vector vec_name to this system. All the additional vectors are similarly distributed, like the solution, and initialized to zero.

By default vectors added by add_vector are projected to changed grids by reinit(). To zero them instead (more efficient), pass "false" as the second argument

Definition at line 661 of file system.C.

References libMesh::System::_dof_map, libMesh::System::_is_initialized, libMesh::System::_vector_is_adjoint, libMesh::System::_vector_projections, libMesh::System::_vector_types, libMesh::System::_vectors, libMesh::NumericVector< T >::build(), libMesh::ParallelObject::comm(), libMesh::GHOSTED, libMesh::System::have_vector(), libMesh::NumericVector< T >::init(), libMesh::System::n_dofs(), and libMesh::System::n_local_dofs().

Referenced by libMesh::System::add_adjoint_rhs(), libMesh::System::add_adjoint_solution(), libMesh::System::add_sensitivity_rhs(), libMesh::System::add_sensitivity_solution(), libMesh::ExplicitSystem::add_system_rhs(), libMesh::System::add_weighted_sensitivity_adjoint_solution(), libMesh::System::add_weighted_sensitivity_solution(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::SecondOrderUnsteadySolver::init(), libMesh::UnsteadySolver::init(), libMesh::OptimizationSystem::init_data(), libMesh::ContinuationSystem::init_data(), libMesh::NewmarkSystem::NewmarkSystem(), libMesh::System::read_header(), libMesh::FrequencySystem::set_frequencies(), libMesh::FrequencySystem::set_frequencies_by_range(), and libMesh::FrequencySystem::set_frequencies_by_steps().

 {
   // Return the vector if it is already there.
   if (this->have_vector(vec_name))
     return *(_vectors[vec_name]);
 
   // Otherwise build the vector
   NumericVector<Number> * buf = NumericVector<Number>::build(this->comm()).release();
   _vectors.insert (std::make_pair (vec_name, buf));
   _vector_projections.insert (std::make_pair (vec_name, projections));
 
   _vector_types.insert (std::make_pair (vec_name, type));
 
   // Vectors are primal by default
   _vector_is_adjoint.insert (std::make_pair (vec_name, -1));
 
   // Initialize it if necessary
   if (_is_initialized)
     {
       if (type == GHOSTED)
         {
 #ifdef LIBMESH_ENABLE_GHOSTED
           buf->init (this->n_dofs(), this->n_local_dofs(),
                      _dof_map->get_send_list(), false,
                      GHOSTED);
 #else
           libmesh_error_msg("Cannot initialize ghosted vectors when they are not enabled.");
 #endif
         }
       else
         buf->init (this->n_dofs(), this->n_local_dofs(), false, type);
     }
 
   return *buf;
 }

◆ add_weighted_sensitivity_adjoint_solution()

NumericVector< Number > & libMesh::System::add_weighted_sensitivity_adjoint_solution ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's weighted sensitivity adjoint solution vectors, by default the one corresponding to the first qoi. Creates the vector if it doesn't already exist.

Definition at line 989 of file system.C.

References libMesh::System::add_vector(), and libMesh::System::set_vector_as_adjoint().

Referenced by libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve().

 {
   std::ostringstream adjoint_name;
   adjoint_name << "weighted_sensitivity_adjoint_solution" << i;
 
   NumericVector<Number> & returnval = this->add_vector(adjoint_name.str());
   this->set_vector_as_adjoint(adjoint_name.str(), i);
   return returnval;
 }

◆ add_weighted_sensitivity_solution()

NumericVector< Number > & libMesh::System::add_weighted_sensitivity_solution ( )

inherited

Returns: A reference to the solution of the last weighted sensitivity solve Creates the vector if it doesn't already exist.

Definition at line 936 of file system.C.

References libMesh::System::add_vector().

Referenced by libMesh::ImplicitSystem::weighted_sensitivity_solve().

 {
   return this->add_vector("weighted_sensitivity_solution");
 }

◆ adjoint_qoi_parameter_sensitivity()

void libMesh::ImplicitSystem::adjoint_qoi_parameter_sensitivity	(	const QoISet &	qoi_indices,
		const ParameterVector &	parameters,
		SensitivityData &	sensitivities
	)

overridevirtualinherited

Solves for the derivative of each of the system's quantities of interest q in qoi[qoi_indices] with respect to each parameter in parameters, placing the result for qoi i and parameter j into sensitivities[i][j].

Uses adjoint_solve() and the adjoint sensitivity method.

Currently uses finite differenced derivatives (partial q / partial p) and (partial R / partial p).

Reimplemented from libMesh::System.

Definition at line 697 of file implicit_system.C.

References std::abs(), libMesh::ImplicitSystem::adjoint_solve(), libMesh::SensitivityData::allocate_data(), libMesh::ExplicitSystem::assemble_qoi(), libMesh::ImplicitSystem::assemble_residual_derivatives(), libMesh::NumericVector< T >::dot(), libMesh::System::get_sensitivity_rhs(), libMesh::QoISet::has_index(), libMesh::System::is_adjoint_already_solved(), std::max(), libMesh::System::n_qois(), libMesh::System::qoi, libMesh::Real, libMesh::ParameterVector::size(), and libMesh::TOLERANCE.

 {
   ParameterVector & parameters =
     const_cast<ParameterVector &>(parameters_in);
 
   const unsigned int Np = cast_int<unsigned int>
     (parameters.size());
   const unsigned int Nq = this->n_qois();
 
   // An introduction to the problem:
   //
   // Residual R(u(p),p) = 0
   // partial R / partial u = J = system matrix
   //
   // This implies that:
   // d/dp(R) = 0
   // (partial R / partial p) +
   // (partial R / partial u) * (partial u / partial p) = 0
 
   // We first do an adjoint solve:
   // J^T * z = (partial q / partial u)
   // if we havent already or dont have an initial condition for the adjoint
   if (!this->is_adjoint_already_solved())
     {
       this->adjoint_solve(qoi_indices);
     }
 
   this->assemble_residual_derivatives(parameters_in);
 
   // Get ready to fill in sensitivities:
   sensitivities.allocate_data(qoi_indices, *this, parameters);
 
   // We use the identities:
   // dq/dp = (partial q / partial p) + (partial q / partial u) *
   //         (partial u / partial p)
   // dq/dp = (partial q / partial p) + (J^T * z) *
   //         (partial u / partial p)
   // dq/dp = (partial q / partial p) + z * J *
   //         (partial u / partial p)
 
   // Leading to our final formula:
   // dq/dp = (partial q / partial p) - z * (partial R / partial p)
 
   // In the case of adjoints with heterogenous Dirichlet boundary
   // function phi, where
   // q :=  S(u) - R(u,phi)
   // the final formula works out to:
   // dq/dp = (partial S / partial p) - z * (partial R / partial p)
   // Because we currently have no direct access to
   // (partial S / partial p), we use the identity
   // (partial S / partial p) = (partial q / partial p) +
   //                           phi * (partial R / partial p)
   // to derive an equivalent equation:
   // dq/dp = (partial q / partial p) - (z-phi) * (partial R / partial p)
 
   // Since z-phi degrees of freedom are zero for constrained indices,
   // we can use the same constrained -(partial R / partial p) that we
   // use for forward sensitivity solves, taking into account the
   // differing sign convention.
   //
   // Since that vector is constrained, its constrained indices are
   // zero, so its product with phi is zero, so we can neglect the
   // evaluation of phi terms.
 
   for (unsigned int j=0; j != Np; ++j)
     {
       // We currently get partial derivatives via central differencing
 
       // (partial q / partial p) ~= (q(p+dp)-q(p-dp))/(2*dp)
       // (partial R / partial p) ~= (rhs(p+dp) - rhs(p-dp))/(2*dp)
 
       Number old_parameter = *parameters[j];
 
       const Real delta_p =
         TOLERANCE * std::max(std::abs(old_parameter), 1e-3);
 
       *parameters[j] = old_parameter - delta_p;
       this->assemble_qoi(qoi_indices);
       std::vector<Number> qoi_minus = this->qoi;
 
       NumericVector<Number> & neg_partialR_partialp = this->get_sensitivity_rhs(j);
 
       *parameters[j] = old_parameter + delta_p;
       this->assemble_qoi(qoi_indices);
       std::vector<Number> & qoi_plus = this->qoi;
 
       std::vector<Number> partialq_partialp(Nq, 0);
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           partialq_partialp[i] = (qoi_plus[i] - qoi_minus[i]) / (2.*delta_p);
 
       // Don't leave the parameter changed
       *parameters[j] = old_parameter;
 
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           sensitivities[i][j] = partialq_partialp[i] +
             neg_partialR_partialp.dot(this->get_adjoint_solution(i));
     }
 
   // All parameters have been reset.
   // Reset the original qoi.
 
   this->assemble_qoi(qoi_indices);
 }

◆ adjoint_solve()

std::pair< unsigned int, Real > libMesh::ImplicitSystem::adjoint_solve ( const QoISet & qoi_indices = QoISet() )

overridevirtualinherited

Assembles & solves the linear system (dR/du)^T*z = dq/du, for those quantities of interest q specified by qoi_indices.

Leave qoi_indices empty to solve all adjoint problems.

Returns: A pair with the total number of linear iterations performed and the (sum of the) final residual norms

Reimplemented from libMesh::System.

Reimplemented in libMesh::DifferentiableSystem.

Definition at line 372 of file implicit_system.C.

References libMesh::System::add_adjoint_solution(), libMesh::LinearSolver< T >::adjoint_solve(), libMesh::System::assemble_before_solve, libMesh::ExplicitSystem::assemble_qoi_derivative(), libMesh::ImplicitSystem::assembly(), libMesh::DofMap::enforce_adjoint_constraints_exactly(), libMesh::System::get_adjoint_rhs(), libMesh::System::get_adjoint_solution(), libMesh::System::get_dof_map(), libMesh::ImplicitSystem::get_linear_solve_parameters(), libMesh::ImplicitSystem::get_linear_solver(), libMesh::QoISet::has_index(), libMesh::ImplicitSystem::matrix, libMesh::System::n_qois(), and libMesh::ImplicitSystem::release_linear_solver().

Referenced by libMesh::ImplicitSystem::adjoint_qoi_parameter_sensitivity(), libMesh::DifferentiableSystem::adjoint_solve(), libMesh::ImplicitSystem::qoi_parameter_hessian(), and libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product().

 {
   // Log how long the linear solve takes.
   LOG_SCOPE("adjoint_solve()", "ImplicitSystem");
 
   if (this->assemble_before_solve)
     // Assemble the linear system
     this->assembly (/* get_residual = */ false,
                     /* get_jacobian = */ true);
 
   // The adjoint problem is linear
   LinearSolver<Number> * linear_solver = this->get_linear_solver();
 
   // Reset and build the RHS from the QOI derivative
   this->assemble_qoi_derivative(qoi_indices,
                                 /* include_liftfunc = */ false,
                                 /* apply_constraints = */ true);
 
   // Our iteration counts and residuals will be sums of the individual
   // results
   std::pair<unsigned int, Real> solver_params =
     this->get_linear_solve_parameters();
   std::pair<unsigned int, Real> totalrval = std::make_pair(0,0.0);
 
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       {
         const std::pair<unsigned int, Real> rval =
           linear_solver->adjoint_solve (*matrix, this->add_adjoint_solution(i),
                                         this->get_adjoint_rhs(i),
                                         solver_params.second,
                                         solver_params.first);
 
         totalrval.first  += rval.first;
         totalrval.second += rval.second;
       }
 
   this->release_linear_solver(linear_solver);
 
   // The linear solver may not have fit our constraints exactly
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       this->get_dof_map().enforce_adjoint_constraints_exactly
         (this->get_adjoint_solution(i), i);
 #endif
 
   return totalrval;
 }

◆ allocate_data_structures()

virtual void libMesh::RBConstruction::allocate_data_structures ( )

protectedvirtual

Helper function that actually allocates all the data structures required by this class.

Reimplemented in libMesh::TransientRBConstruction.

◆ assemble()

virtual void libMesh::LinearImplicitSystem::assemble ( )

inlineoverridevirtualinherited

Prepares matrix and _dof_map for matrix assembly. Does not actually assemble anything. For matrix assembly, use the assemble() in derived classes. Should be overridden in derived classes.

Reimplemented from libMesh::ImplicitSystem.

Reimplemented in libMesh::FrequencySystem, and libMesh::NewmarkSystem.

Definition at line 110 of file linear_implicit_system.h.

References libMesh::ImplicitSystem::assemble().

Referenced by libMesh::NewmarkSystem::assemble(), libMesh::FrequencySystem::assemble(), libMesh::LinearImplicitSystem::assembly(), and libMesh::LinearImplicitSystem::solve().

110 { ImplicitSystem::assemble(); }

libMesh::ImplicitSystem::assemble

virtual void assemble() override

Definition: implicit_system.C:184

◆ assemble_affine_expansion()

virtual void libMesh::RBConstruction::assemble_affine_expansion	(	bool	skip_matrix_assembly,
		bool	skip_vector_assembly
	)

virtual

Assemble the matrices and vectors for this system. Optionally skip matrix or vector assembly (e.g. we may want to read data in from disk instead).

Reimplemented in libMesh::TransientRBConstruction.

◆ assemble_all_affine_operators()

virtual void libMesh::RBConstruction::assemble_all_affine_operators ( )

protectedvirtual

Assemble and store all Q_a affine operators as well as the inner-product matrix.

Reimplemented in libMesh::TransientRBConstruction.

◆ assemble_all_affine_vectors()

virtual void libMesh::RBConstruction::assemble_all_affine_vectors ( )

protectedvirtual

Assemble and store the affine RHS vectors.

◆ assemble_all_output_vectors()

virtual void libMesh::RBConstruction::assemble_all_output_vectors ( )

protectedvirtual

Assemble and store the output vectors.

◆ assemble_Aq_matrix()

void libMesh::RBConstruction::assemble_Aq_matrix	(	unsigned int	q,
		SparseMatrix< Number > *	input_matrix,
		bool	apply_dof_constraints = `true`
	)

Assemble the q^th affine matrix and store it in input_matrix.

◆ assemble_Fq_vector()

void libMesh::RBConstruction::assemble_Fq_vector	(	unsigned int	q,
		NumericVector< Number > *	input_vector,
		bool	apply_dof_constraints = `true`
	)

Assemble the q^th affine vector and store it in input_matrix.

◆ assemble_inner_product_matrix()

void libMesh::RBConstruction::assemble_inner_product_matrix	(	SparseMatrix< Number > *	input_matrix,
		bool	apply_dof_constraints = `true`
	)

Assemble the inner product matrix and store it in input_matrix.

◆ assemble_misc_matrices()

virtual void libMesh::RBConstruction::assemble_misc_matrices ( )

protectedvirtual

Assemble and store all the inner-product matrix, the constraint matrix (for constrained problems) and the mass matrix (for time-dependent problems).

Reimplemented in libMesh::TransientRBConstruction.

◆ assemble_qoi()

void libMesh::ExplicitSystem::assemble_qoi ( const QoISet & qoi_indices = QoISet() )

overridevirtualinherited

Prepares qoi for quantity of interest assembly, then calls user qoi function. Can be overridden in derived classes.

Reimplemented from libMesh::System.

Reimplemented in libMesh::FEMSystem.

Definition at line 56 of file explicit_system.C.

References libMesh::System::assemble_qoi(), libMesh::QoISet::has_index(), libMesh::System::n_qois(), and libMesh::System::qoi.

Referenced by libMesh::ImplicitSystem::adjoint_qoi_parameter_sensitivity(), libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity(), libMesh::ImplicitSystem::qoi_parameter_hessian(), and libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product().

 {
   // The user quantity of interest assembly gets to expect to
   // accumulate on initially zero values
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       qoi[i] = 0;
 
   Parent::assemble_qoi (qoi_indices);
 }

◆ assemble_qoi_derivative()

void libMesh::ExplicitSystem::assemble_qoi_derivative	(	const QoISet &	qoi_indices = `QoISet()`,
		bool	include_liftfunc = `true`,
		bool	apply_constraints = `true`
	)

overridevirtualinherited

Prepares adjoint_rhs for quantity of interest derivative assembly, then calls user qoi derivative function. Can be overridden in derived classes.

Reimplemented from libMesh::System.

Reimplemented in libMesh::FEMSystem.

Definition at line 69 of file explicit_system.C.

References libMesh::System::add_adjoint_rhs(), libMesh::System::assemble_qoi_derivative(), libMesh::QoISet::has_index(), libMesh::System::n_qois(), and libMesh::NumericVector< T >::zero().

Referenced by libMesh::ImplicitSystem::adjoint_solve(), libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity(), libMesh::ImplicitSystem::qoi_parameter_hessian(), libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product(), and libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve().

 {
   // The user quantity of interest derivative assembly gets to expect
   // to accumulate on initially zero vectors
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       this->add_adjoint_rhs(i).zero();
 
   Parent::assemble_qoi_derivative (qoi_indices, include_liftfunc,
                                    apply_constraints);
 }

◆ assemble_residual_derivatives()

void libMesh::ImplicitSystem::assemble_residual_derivatives ( const ParameterVector & parameters )

overridevirtualinherited

Residual parameter derivative function.

Uses finite differences by default.

This will assemble the sensitivity rhs vectors to hold -(partial R / partial p_i), making them ready to solve the forward sensitivity equation.

Can be overridden in derived classes.

Reimplemented from libMesh::System.

Definition at line 654 of file implicit_system.C.

References std::abs(), libMesh::System::add_sensitivity_rhs(), libMesh::ImplicitSystem::assembly(), libMesh::NumericVector< T >::close(), std::max(), libMesh::Real, libMesh::ExplicitSystem::rhs, libMesh::ParameterVector::size(), and libMesh::TOLERANCE.

Referenced by libMesh::ImplicitSystem::adjoint_qoi_parameter_sensitivity(), and libMesh::ImplicitSystem::sensitivity_solve().

 {
   ParameterVector & parameters =
     const_cast<ParameterVector &>(parameters_in);
 
   const unsigned int Np = cast_int<unsigned int>
     (parameters.size());
 
   for (unsigned int p=0; p != Np; ++p)
     {
       NumericVector<Number> & sensitivity_rhs = this->add_sensitivity_rhs(p);
 
       // Approximate -(partial R / partial p) by
       // (R(p-dp) - R(p+dp)) / (2*dp)
 
       Number old_parameter = *parameters[p];
 
       const Real delta_p =
         TOLERANCE * std::max(std::abs(old_parameter), 1e-3);
 
       *parameters[p] -= delta_p;
 
       //      this->assembly(true, false, true);
       this->assembly(true, false, false);
       this->rhs->close();
       sensitivity_rhs = *this->rhs;
 
       *parameters[p] = old_parameter + delta_p;
 
       //      this->assembly(true, false, true);
       this->assembly(true, false, false);
       this->rhs->close();
 
       sensitivity_rhs -= *this->rhs;
       sensitivity_rhs /= (2*delta_p);
       sensitivity_rhs.close();
 
       *parameters[p] = old_parameter;
     }
 }

◆ assembly()

void libMesh::LinearImplicitSystem::assembly	(	bool	get_residual,
		bool	get_jacobian,
		bool	apply_heterogeneous_constraints = `false`,
		bool	apply_no_constraints = `false`
	)

overridevirtualinherited

Assembles a residual in rhs and/or a jacobian in matrix, as requested.

Reimplemented from libMesh::ImplicitSystem.

Definition at line 366 of file linear_implicit_system.C.

References libMesh::NumericVector< T >::add_vector(), libMesh::LinearImplicitSystem::assemble(), libMesh::NumericVector< T >::close(), libMesh::SparseMatrix< T >::close(), libMesh::ImplicitSystem::matrix, libMesh::ExplicitSystem::rhs, and libMesh::System::solution.

 {
   // Residual R(u(p),p) := A(p)*u(p) - b(p)
   // partial R / partial u = A
 
   this->assemble();
   this->rhs->close();
   this->matrix->close();
 
   *(this->rhs) *= -1.0;
   this->rhs->add_vector(*this->solution, *this->matrix);
 }

◆ attach_assemble_function()

void libMesh::System::attach_assemble_function ( void fptrEquationSystems &es, const std::string &name )

inherited

Register a user function to use in assembling the system matrix and RHS.

Definition at line 1777 of file system.C.

References libMesh::System::_assemble_system_function, libMesh::System::_assemble_system_object, and libMesh::out.

 {
   libmesh_assert(fptr);
 
   if (_assemble_system_object != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both assembly function and object!"
                    << std::endl;
 
       _assemble_system_object = nullptr;
     }
 
   _assemble_system_function = fptr;
 }

◆ attach_assemble_object()

void libMesh::System::attach_assemble_object ( System::Assembly & assemble_in )

inherited

Register a user object to use in assembling the system matrix and RHS.

Definition at line 1796 of file system.C.

References libMesh::System::_assemble_system_function, libMesh::System::_assemble_system_object, and libMesh::out.

 {
   if (_assemble_system_function != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both assembly object and function!"
                    << std::endl;
 
       _assemble_system_function = nullptr;
     }
 
   _assemble_system_object = &assemble_in;
 }

◆ attach_constraint_function()

void libMesh::System::attach_constraint_function ( void fptrEquationSystems &es, const std::string &name )

inherited

Register a user function for imposing constraints.

Definition at line 1812 of file system.C.

References libMesh::System::_constrain_system_function, libMesh::System::_constrain_system_object, and libMesh::out.

 {
   libmesh_assert(fptr);
 
   if (_constrain_system_object != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both constraint function and object!"
                    << std::endl;
 
       _constrain_system_object = nullptr;
     }
 
   _constrain_system_function = fptr;
 }

◆ attach_constraint_object()

void libMesh::System::attach_constraint_object ( System::Constraint & constrain )

inherited

Register a user object for imposing constraints.

Definition at line 1831 of file system.C.

References libMesh::System::_constrain_system_function, libMesh::System::_constrain_system_object, and libMesh::out.

 {
   if (_constrain_system_function != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both constraint object and function!"
                    << std::endl;
 
       _constrain_system_function = nullptr;
     }
 
   _constrain_system_object = &constrain;
 }

◆ attach_init_function()

void libMesh::System::attach_init_function ( void fptrEquationSystems &es, const std::string &name )

inherited

Register a user function to use in initializing the system.

Definition at line 1742 of file system.C.

References libMesh::System::_init_system_function, libMesh::System::_init_system_object, and libMesh::out.

 {
   libmesh_assert(fptr);
 
   if (_init_system_object != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both initialization function and object!"
                    << std::endl;
 
       _init_system_object = nullptr;
     }
 
   _init_system_function = fptr;
 }

◆ attach_init_object()

void libMesh::System::attach_init_object ( System::Initialization & init_in )

inherited

Register a user class to use to initialize the system.

Note: This is exclusive with the attach_init_function.

Definition at line 1761 of file system.C.

References libMesh::System::_init_system_function, libMesh::System::_init_system_object, and libMesh::out.

 {
   if (_init_system_function != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both initialization object and function!"
                    << std::endl;
 
       _init_system_function = nullptr;
     }
 
   _init_system_object = &init_in;
 }

◆ attach_QOI_derivative()

void libMesh::System::attach_QOI_derivative ( void fptrEquationSystems &es, const std::string &name, const QoISet &qoi_indices, bool include_liftfunc, bool apply_constraints )

inherited

Register a user function for evaluating derivatives of a quantity of interest with respect to test functions, whose values should be placed in System::rhs

Definition at line 1883 of file system.C.

References libMesh::System::_qoi_evaluate_derivative_function, libMesh::System::_qoi_evaluate_derivative_object, and libMesh::out.

 {
   libmesh_assert(fptr);
 
   if (_qoi_evaluate_derivative_object != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both QOI derivative function and object!"
                    << std::endl;
 
       _qoi_evaluate_derivative_object = nullptr;
     }
 
   _qoi_evaluate_derivative_function = fptr;
 }

◆ attach_QOI_derivative_object()

void libMesh::System::attach_QOI_derivative_object ( QOIDerivative & qoi_derivative )

inherited

Register a user object for evaluating derivatives of a quantity of interest with respect to test functions, whose values should be placed in System::rhs

Definition at line 1902 of file system.C.

References libMesh::System::_qoi_evaluate_derivative_function, libMesh::System::_qoi_evaluate_derivative_object, and libMesh::out.

 {
   if (_qoi_evaluate_derivative_function != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both QOI derivative object and function!"
                    << std::endl;
 
       _qoi_evaluate_derivative_function = nullptr;
     }
 
   _qoi_evaluate_derivative_object = &qoi_derivative;
 }

◆ attach_QOI_function()

void libMesh::System::attach_QOI_function ( void fptrEquationSystems &es, const std::string &name, const QoISet &qoi_indices )

inherited

Register a user function for evaluating the quantities of interest, whose values should be placed in System::qoi

Definition at line 1847 of file system.C.

References libMesh::System::_qoi_evaluate_function, libMesh::System::_qoi_evaluate_object, and libMesh::out.

 {
   libmesh_assert(fptr);
 
   if (_qoi_evaluate_object != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both QOI function and object!"
                    << std::endl;
 
       _qoi_evaluate_object = nullptr;
     }
 
   _qoi_evaluate_function = fptr;
 }

◆ attach_QOI_object()

void libMesh::System::attach_QOI_object ( QOI & qoi )

inherited

Register a user object for evaluating the quantities of interest, whose values should be placed in System::qoi

Definition at line 1867 of file system.C.

References libMesh::System::_qoi_evaluate_function, libMesh::System::_qoi_evaluate_object, and libMesh::out.

 {
   if (_qoi_evaluate_function != nullptr)
     {
       libmesh_here();
       libMesh::out << "WARNING:  Cannot specify both QOI object and function!"
                    << std::endl;
 
       _qoi_evaluate_function = nullptr;
     }
 
   _qoi_evaluate_object = &qoi_in;
 }

◆ attach_shell_matrix()

void libMesh::LinearImplicitSystem::attach_shell_matrix ( ShellMatrix< Number > * shell_matrix )

inherited

This function enables the user to provide a shell matrix, i.e. a matrix that is not stored element-wise, but as a function. When you register your shell matrix using this function, calling solve() will no longer use the matrix member but the registered shell matrix instead. You can reset this behaviour to its original state by supplying a nullptr to this function.

Definition at line 158 of file linear_implicit_system.C.

References libMesh::LinearImplicitSystem::_shell_matrix.

Referenced by libMesh::LinearImplicitSystem::detach_shell_matrix().

 {
   _shell_matrix = shell_matrix;
 }

◆ boundary_project_solution() [1/2]

void libMesh::System::boundary_project_solution	(	const std::set< boundary_id_type > &	b,
		const std::vector< unsigned int > &	variables,
		FunctionBase< Number > *	f,
		FunctionBase< Gradient > *	g = `nullptr`
	)

inherited

Projects arbitrary boundary functions onto a vector of degree of freedom values for the current system. Only degrees of freedom which affect the function's trace on a boundary in the set b are affected. Only degrees of freedom associated with the variables listed in the vector variables are projected. The function value f and its gradient g are user-provided cloneable functors. A gradient g is only required/used for projecting onto finite element spaces with continuous derivatives. If non-default Parameters are to be used, they can be provided in the parameters argument.

This method projects an arbitrary boundary function onto the solution via L2 projections and nodal interpolations on each element.

Definition at line 985 of file system_projection.C.

 {
   this->boundary_project_vector(b, variables, *solution, f, g);
 
   solution->localize(*current_local_solution);
 }

◆ boundary_project_solution() [2/2]

void libMesh::System::boundary_project_solution	(	const std::set< boundary_id_type > &	b,
		const std::vector< unsigned int > &	variables,
		ValueFunctionPointer	fptr,
		GradientFunctionPointer	gptr,
		const Parameters &	parameters
	)

inherited

Projects arbitrary boundary functions onto a vector of degree of freedom values for the current system. Only degrees of freedom which affect the function's trace on a boundary in the set b are affected. Only degrees of freedom associated with the variables listed in the vector variables are projected. The function value fptr and its gradient gptr are represented by function pointers. A gradient gptr is only required/used for projecting onto finite element spaces with continuous derivatives.

This method projects components of an arbitrary boundary function onto the solution via L2 projections and nodal interpolations on each element.

Definition at line 968 of file system_projection.C.

 {
   WrappedFunction<Number> f(*this, fptr, &parameters);
   WrappedFunction<Gradient> g(*this, gptr, &parameters);
   this->boundary_project_solution(b, variables, &f, &g);
 }

◆ boundary_project_vector() [1/2]

void libMesh::System::boundary_project_vector	(	const std::set< boundary_id_type > &	b,
		const std::vector< unsigned int > &	variables,
		NumericVector< Number > &	new_vector,
		FunctionBase< Number > *	f,
		FunctionBase< Gradient > *	g = `nullptr`,
		int	is_adjoint = `-1`
	)		const

inherited

Projects arbitrary boundary functions onto a vector of degree of freedom values for the current system. Only degrees of freedom which affect the function's trace on a boundary in the set b are affected. Only degrees of freedom associated with the variables listed in the vector variables are projected. The function value f and its gradient g are user-provided cloneable functors. A gradient g is only required/used for projecting onto finite element spaces with continuous derivatives. If non-default Parameters are to be used, they can be provided in the parameters argument.

Constrain the new vector using the requested adjoint rather than primal constraints if is_adjoint is non-negative.

This method projects an arbitrary function via L2 projections and nodal interpolations on each element.

Definition at line 1021 of file system_projection.C.

References libMesh::NumericVector< T >::close(), and libMesh::Threads::parallel_for().

 {
   LOG_SCOPE ("boundary_project_vector()", "System");
 
   Threads::parallel_for
     (ConstElemRange (this->get_mesh().active_local_elements_begin(),
                      this->get_mesh().active_local_elements_end() ),
      BoundaryProjectSolution(b, variables, *this, f, g,
                              this->get_equation_systems().parameters,
                              new_vector)
      );
 
   // We don't do SCALAR dofs when just projecting the boundary, so
   // we're done here.
 
   new_vector.close();
 
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
   if (is_adjoint == -1)
     this->get_dof_map().enforce_constraints_exactly(*this, &new_vector);
   else if (is_adjoint >= 0)
     this->get_dof_map().enforce_adjoint_constraints_exactly(new_vector,
                                                             is_adjoint);
 #endif
 }

◆ boundary_project_vector() [2/2]

void libMesh::System::boundary_project_vector	(	const std::set< boundary_id_type > &	b,
		const std::vector< unsigned int > &	variables,
		ValueFunctionPointer	fptr,
		GradientFunctionPointer	gptr,
		const Parameters &	parameters,
		NumericVector< Number > &	new_vector,
		int	is_adjoint = `-1`
	)		const

inherited

Projects arbitrary boundary functions onto a vector of degree of freedom values for the current system. Only degrees of freedom which affect the function's trace on a boundary in the set b are affected. Only degrees of freedom associated with the variables listed in the vector variables are projected. The function value fptr and its gradient gptr are represented by function pointers. A gradient gptr is only required/used for projecting onto finite element spaces with continuous derivatives.

Constrain the new vector using the requested adjoint rather than primal constraints if is_adjoint is non-negative.

This method projects an arbitrary boundary function via L2 projections and nodal interpolations on each element.

Definition at line 1003 of file system_projection.C.

 {
   WrappedFunction<Number> f(*this, fptr, &parameters);
   WrappedFunction<Gradient> g(*this, gptr, &parameters);
   this->boundary_project_vector(b, variables, new_vector, &f, &g,
                                 is_adjoint);
 }

◆ broadcast_parameters()

void libMesh::RBConstructionBase< LinearImplicitSystem >::broadcast_parameters ( unsigned int proc_id )

inherited

Broadcasts parameters on processor proc_id to all processors.

◆ build_context()

virtual std::unique_ptr<DGFEMContext> libMesh::RBConstruction::build_context ( )

protectedvirtual

Builds a DGFEMContext object with enough information to do evaluations on each element. We use DGFEMContext since it allows for both DG and continuous Galerkin formulations.

◆ build_zero_dirichlet_boundary_object()

static std::unique_ptr<DirichletBoundary> libMesh::RBConstruction::build_zero_dirichlet_boundary_object ( )

static

It's helpful to be able to generate a DirichletBoundary that stores a ZeroFunction in order to impose Dirichlet boundary conditions.

◆ calculate_norm() [1/2]

Real libMesh::System::calculate_norm	(	const NumericVector< Number > &	v,
		unsigned int	var,
		FEMNormType	norm_type,
		std::set< unsigned int > *	skip_dimensions = `nullptr`
	)		const

inherited

Returns: A norm of variable var in the vector v, in the specified norm (e.g. L2, L_INF, H1)

Definition at line 1378 of file system.C.

References libMesh::DISCRETE_L1, libMesh::DISCRETE_L2, libMesh::DISCRETE_L_INF, libMesh::System::discrete_var_norm(), libMesh::L2, libMesh::System::n_vars(), and libMesh::Real.

Referenced by libMesh::AdaptiveTimeSolver::calculate_norm(), and libMesh::UnsteadySolver::du().

 {
   //short circuit to save time
   if (norm_type == DISCRETE_L1 ||
       norm_type == DISCRETE_L2 ||
       norm_type == DISCRETE_L_INF)
     return discrete_var_norm(v,var,norm_type);
 
   // Not a discrete norm
   std::vector<FEMNormType> norms(this->n_vars(), L2);
   std::vector<Real> weights(this->n_vars(), 0.0);
   norms[var] = norm_type;
   weights[var] = 1.0;
   Real val = this->calculate_norm(v, SystemNorm(norms, weights), skip_dimensions);
   return val;
 }

◆ calculate_norm() [2/2]

Real libMesh::System::calculate_norm	(	const NumericVector< Number > &	v,
		const SystemNorm &	norm,
		std::set< unsigned int > *	skip_dimensions = `nullptr`
	)		const

inherited

Returns: A norm of the vector v, using component_norm and component_scale to choose and weight the norms of each variable.

Definition at line 1400 of file system.C.

References libMesh::System::_dof_map, libMesh::System::_mesh, std::abs(), libMesh::TypeVector< T >::add_scaled(), libMesh::TypeTensor< T >::add_scaled(), libMesh::FEGenericBase< OutputType >::build(), libMesh::NumericVector< T >::build(), libMesh::ParallelObject::comm(), libMesh::FEType::default_quadrature_rule(), libMesh::DISCRETE_L1, libMesh::DISCRETE_L2, libMesh::DISCRETE_L_INF, libMesh::System::discrete_var_norm(), libMesh::DofMap::dof_indices(), libMesh::MeshBase::elem_dimensions(), libMesh::FEGenericBase< OutputType >::get_d2phi(), libMesh::System::get_dof_map(), libMesh::FEGenericBase< OutputType >::get_dphi(), libMesh::FEAbstract::get_JxW(), libMesh::System::get_mesh(), libMesh::FEGenericBase< OutputType >::get_phi(), libMesh::H1, libMesh::H1_SEMINORM, libMesh::H2, libMesh::H2_SEMINORM, libMesh::SystemNorm::is_discrete(), libMesh::L1, libMesh::NumericVector< T >::l1_norm(), libMesh::L2, libMesh::NumericVector< T >::l2_norm(), libMesh::L_INF, libMesh::NumericVector< T >::linfty_norm(), libMesh::NumericVector< T >::localize(), std::max(), libMesh::Parallel::Communicator::max(), libMesh::QBase::n_points(), libMesh::System::n_vars(), libMesh::TypeVector< T >::norm(), libMesh::TypeTensor< T >::norm(), libMesh::TensorTools::norm_sq(), libMesh::TypeVector< T >::norm_sq(), libMesh::TypeTensor< T >::norm_sq(), libMesh::Real, libMesh::FEAbstract::reinit(), libMesh::SERIAL, libMesh::NumericVector< T >::size(), libMesh::Parallel::Communicator::sum(), libMesh::SystemNorm::type(), libMesh::DofMap::variable_type(), libMesh::W1_INF_SEMINORM, libMesh::W2_INF_SEMINORM, libMesh::SystemNorm::weight(), and libMesh::SystemNorm::weight_sq().

 {
   // This function must be run on all processors at once
   parallel_object_only();
 
   LOG_SCOPE ("calculate_norm()", "System");
 
   // Zero the norm before summation
   Real v_norm = 0.;
 
   if (norm.is_discrete())
     {
       //Check to see if all weights are 1.0 and all types are equal
       FEMNormType norm_type0 = norm.type(0);
       unsigned int check_var = 0;
       for (; check_var != this->n_vars(); ++check_var)
         if ((norm.weight(check_var) != 1.0) || (norm.type(check_var) != norm_type0))
           break;
 
       //All weights were 1.0 so just do the full vector discrete norm
       if (check_var == this->n_vars())
         {
           if (norm_type0 == DISCRETE_L1)
             return v.l1_norm();
           if (norm_type0 == DISCRETE_L2)
             return v.l2_norm();
           if (norm_type0 == DISCRETE_L_INF)
             return v.linfty_norm();
           else
             libmesh_error_msg("Invalid norm_type0 = " << norm_type0);
         }
 
       for (unsigned int var=0; var != this->n_vars(); ++var)
         {
           // Skip any variables we don't need to integrate
           if (norm.weight(var) == 0.0)
             continue;
 
           v_norm += norm.weight(var) * discrete_var_norm(v, var, norm.type(var));
         }
 
       return v_norm;
     }
 
   // Localize the potentially parallel vector
   std::unique_ptr<NumericVector<Number>> local_v = NumericVector<Number>::build(this->comm());
   local_v->init(v.size(), true, SERIAL);
   v.localize (*local_v, _dof_map->get_send_list());
 
   // I'm not sure how best to mix Hilbert norms on some variables (for
   // which we'll want to square then sum then square root) with norms
   // like L_inf (for which we'll just want to take an absolute value
   // and then sum).
   bool using_hilbert_norm = true,
     using_nonhilbert_norm = true;
 
   // Loop over all variables
   for (unsigned int var=0; var != this->n_vars(); ++var)
     {
       // Skip any variables we don't need to integrate
       Real norm_weight_sq = norm.weight_sq(var);
       if (norm_weight_sq == 0.0)
         continue;
       Real norm_weight = norm.weight(var);
 
       // Check for unimplemented norms (rather than just returning 0).
       FEMNormType norm_type = norm.type(var);
       if ((norm_type==H1) ||
           (norm_type==H2) ||
           (norm_type==L2) ||
           (norm_type==H1_SEMINORM) ||
           (norm_type==H2_SEMINORM))
         {
           if (!using_hilbert_norm)
             libmesh_not_implemented();
           using_nonhilbert_norm = false;
         }
       else if ((norm_type==L1) ||
                (norm_type==L_INF) ||
                (norm_type==W1_INF_SEMINORM) ||
                (norm_type==W2_INF_SEMINORM))
         {
           if (!using_nonhilbert_norm)
             libmesh_not_implemented();
           using_hilbert_norm = false;
         }
       else
         libmesh_not_implemented();
 
       const FEType & fe_type = this->get_dof_map().variable_type(var);
 
       // Allow space for dims 0-3, even if we don't use them all
       std::vector<std::unique_ptr<FEBase>> fe_ptrs(4);
       std::vector<std::unique_ptr<QBase>> q_rules(4);
 
       const std::set<unsigned char> & elem_dims = _mesh.elem_dimensions();
 
       // Prepare finite elements for each dimension present in the mesh
       for (const auto & dim : elem_dims)
         {
           if (skip_dimensions && skip_dimensions->find(dim) != skip_dimensions->end())
             continue;
 
           // Construct quadrature and finite element objects
           q_rules[dim] = fe_type.default_quadrature_rule (dim);
           fe_ptrs[dim] = FEBase::build(dim, fe_type);
 
           // Attach quadrature rule to FE object
           fe_ptrs[dim]->attach_quadrature_rule (q_rules[dim].get());
         }
 
       std::vector<dof_id_type> dof_indices;
 
       // Begin the loop over the elements
       for (const auto & elem : this->get_mesh().active_local_element_ptr_range())
         {
           const unsigned int dim = elem->dim();
 
 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
 
           // One way for implementing this would be to exchange the fe with the FEInterface- class.
           // However, it needs to be discussed whether integral-norms make sense for infinite elements.
           // or in which sense they could make sense.
           if (elem->infinite() )
             libmesh_not_implemented();
 
 #endif
 
           if (skip_dimensions && skip_dimensions->find(dim) != skip_dimensions->end())
             continue;
 
           FEBase * fe = fe_ptrs[dim].get();
           QBase * qrule = q_rules[dim].get();
           libmesh_assert(fe);
           libmesh_assert(qrule);
 
           const std::vector<Real> &               JxW = fe->get_JxW();
           const std::vector<std::vector<Real>> * phi = nullptr;
           if (norm_type == H1 ||
               norm_type == H2 ||
               norm_type == L2 ||
               norm_type == L1 ||
               norm_type == L_INF)
             phi = &(fe->get_phi());
 
           const std::vector<std::vector<RealGradient>> * dphi = nullptr;
           if (norm_type == H1 ||
               norm_type == H2 ||
               norm_type == H1_SEMINORM ||
               norm_type == W1_INF_SEMINORM)
             dphi = &(fe->get_dphi());
 #ifdef LIBMESH_ENABLE_SECOND_DERIVATIVES
           const std::vector<std::vector<RealTensor>> *   d2phi = nullptr;
           if (norm_type == H2 ||
               norm_type == H2_SEMINORM ||
               norm_type == W2_INF_SEMINORM)
             d2phi = &(fe->get_d2phi());
 #endif
 
           fe->reinit (elem);
 
           this->get_dof_map().dof_indices (elem, dof_indices, var);
 
           const unsigned int n_qp = qrule->n_points();
 
           const unsigned int n_sf = cast_int<unsigned int>
             (dof_indices.size());
 
           // Begin the loop over the Quadrature points.
           for (unsigned int qp=0; qp<n_qp; qp++)
             {
               if (norm_type == L1)
                 {
                   Number u_h = 0.;
                   for (unsigned int i=0; i != n_sf; ++i)
                     u_h += (*phi)[i][qp] * (*local_v)(dof_indices[i]);
                   v_norm += norm_weight *
                     JxW[qp] * std::abs(u_h);
                 }
 
               if (norm_type == L_INF)
                 {
                   Number u_h = 0.;
                   for (unsigned int i=0; i != n_sf; ++i)
                     u_h += (*phi)[i][qp] * (*local_v)(dof_indices[i]);
                   v_norm = std::max(v_norm, norm_weight * std::abs(u_h));
                 }
 
               if (norm_type == H1 ||
                   norm_type == H2 ||
                   norm_type == L2)
                 {
                   Number u_h = 0.;
                   for (unsigned int i=0; i != n_sf; ++i)
                     u_h += (*phi)[i][qp] * (*local_v)(dof_indices[i]);
                   v_norm += norm_weight_sq *
                     JxW[qp] * TensorTools::norm_sq(u_h);
                 }
 
               if (norm_type == H1 ||
                   norm_type == H2 ||
                   norm_type == H1_SEMINORM)
                 {
                   Gradient grad_u_h;
                   for (unsigned int i=0; i != n_sf; ++i)
                     grad_u_h.add_scaled((*dphi)[i][qp], (*local_v)(dof_indices[i]));
                   v_norm += norm_weight_sq *
                     JxW[qp] * grad_u_h.norm_sq();
                 }
 
               if (norm_type == W1_INF_SEMINORM)
                 {
                   Gradient grad_u_h;
                   for (unsigned int i=0; i != n_sf; ++i)
                     grad_u_h.add_scaled((*dphi)[i][qp], (*local_v)(dof_indices[i]));
                   v_norm = std::max(v_norm, norm_weight * grad_u_h.norm());
                 }
 
 #ifdef LIBMESH_ENABLE_SECOND_DERIVATIVES
               if (norm_type == H2 ||
                   norm_type == H2_SEMINORM)
                 {
                   Tensor hess_u_h;
                   for (unsigned int i=0; i != n_sf; ++i)
                     hess_u_h.add_scaled((*d2phi)[i][qp], (*local_v)(dof_indices[i]));
                   v_norm += norm_weight_sq *
                     JxW[qp] * hess_u_h.norm_sq();
                 }
 
               if (norm_type == W2_INF_SEMINORM)
                 {
                   Tensor hess_u_h;
                   for (unsigned int i=0; i != n_sf; ++i)
                     hess_u_h.add_scaled((*d2phi)[i][qp], (*local_v)(dof_indices[i]));
                   v_norm = std::max(v_norm, norm_weight * hess_u_h.norm());
                 }
 #endif
             }
         }
     }
 
   if (using_hilbert_norm)
     {
       this->comm().sum(v_norm);
       v_norm = std::sqrt(v_norm);
     }
   else
     {
       this->comm().max(v_norm);
     }
 
   return v_norm;
 }

◆ check_convergence()

void libMesh::RBConstruction::check_convergence ( LinearSolver< Number > & input_solver )

protected

Check if the linear solver reports convergence. Throw an error when that is not the case.

◆ clear()

virtual void libMesh::RBConstruction::clear ( )

overridevirtual

Clear all the data structures associated with the system.

Reimplemented from libMesh::RBConstructionBase< LinearImplicitSystem >.

Reimplemented in libMesh::TransientSystem< RBConstruction >, libMesh::RBEIMConstruction, and libMesh::TransientRBConstruction.

◆ comm()

const Parallel::Communicator& libMesh::ParallelObject::comm ( ) const

inlineinherited

Returns: A reference to the Parallel::Communicator object used by this mesh.

Definition at line 89 of file parallel_object.h.

References libMesh::ParallelObject::_communicator.

90 { return _communicator; }

libMesh::ParallelObject::_communicator

const Parallel::Communicator & _communicator

Definition: parallel_object.h:107

◆ compare()

bool libMesh::System::compare	(	const System &	other_system,
		const Real	threshold,
		const bool	verbose
	)		const

virtualinherited

Returns: true when the other system contains identical data, up to the given threshold. Outputs some diagnostic info when verbose is set.

Definition at line 514 of file system.C.

References libMesh::System::_is_initialized, libMesh::System::_sys_name, libMesh::System::_vectors, libMesh::System::get_vector(), libMesh::System::n_vectors(), libMesh::System::name(), libMesh::out, and libMesh::System::solution.

Referenced by libMesh::EquationSystems::compare().

 {
   // we do not care for matrices, but for vectors
   libmesh_assert (_is_initialized);
   libmesh_assert (other_system._is_initialized);
 
   if (verbose)
     {
       libMesh::out << "  Systems \"" << _sys_name << "\"" << std::endl;
       libMesh::out << "   comparing matrices not supported." << std::endl;
       libMesh::out << "   comparing names...";
     }
 
   // compare the name: 0 means identical
   const int name_result = _sys_name.compare(other_system.name());
   if (verbose)
     {
       if (name_result == 0)
         libMesh::out << " identical." << std::endl;
       else
         libMesh::out << "  names not identical." << std::endl;
       libMesh::out << "   comparing solution vector...";
     }
 
 
   // compare the solution: -1 means identical
   const int solu_result = solution->compare (*other_system.solution.get(),
                                              threshold);
 
   if (verbose)
     {
       if (solu_result == -1)
         libMesh::out << " identical up to threshold." << std::endl;
       else
         libMesh::out << "  first difference occurred at index = "
                      << solu_result << "." << std::endl;
     }
 
 
   // safety check, whether we handle at least the same number
   // of vectors
   std::vector<int> ov_result;
 
   if (this->n_vectors() != other_system.n_vectors())
     {
       if (verbose)
         {
           libMesh::out << "   Fatal difference. This system handles "
                        << this->n_vectors() << " add'l vectors," << std::endl
                        << "   while the other system handles "
                        << other_system.n_vectors()
                        << " add'l vectors." << std::endl
                        << "   Aborting comparison." << std::endl;
         }
       return false;
     }
   else if (this->n_vectors() == 0)
     {
       // there are no additional vectors...
       ov_result.clear ();
     }
   else
     {
       // compare other vectors
       for (auto & pr : _vectors)
         {
           if (verbose)
             libMesh::out << "   comparing vector \""
                          << pr.first << "\" ...";
 
           // assume they have the same name
           const NumericVector<Number> & other_system_vector =
             other_system.get_vector(pr.first);
 
           ov_result.push_back(pr.second->compare (other_system_vector,
                                                   threshold));
 
           if (verbose)
             {
               if (ov_result[ov_result.size()-1] == -1)
                 libMesh::out << " identical up to threshold." << std::endl;
               else
                 libMesh::out << " first difference occurred at" << std::endl
                              << "   index = " << ov_result[ov_result.size()-1] << "." << std::endl;
             }
         }
     } // finished comparing additional vectors
 
 
   bool overall_result;
 
   // sum up the results
   if ((name_result==0) && (solu_result==-1))
     {
       if (ov_result.size()==0)
         overall_result = true;
       else
         {
           bool ov_identical;
           unsigned int n    = 0;
           do
             {
               ov_identical = (ov_result[n]==-1);
               n++;
             }
           while (ov_identical && n<ov_result.size());
           overall_result = ov_identical;
         }
     }
   else
     overall_result = false;
 
   if (verbose)
     {
       libMesh::out << "   finished comparisons, ";
       if (overall_result)
         libMesh::out << "found no differences." << std::endl << std::endl;
       else
         libMesh::out << "found differences." << std::endl << std::endl;
     }
 
   return overall_result;
 }

◆ compute_Fq_representor_innerprods()

virtual void libMesh::RBConstruction::compute_Fq_representor_innerprods ( bool compute_inner_products = true )

protectedvirtual

Compute the terms that are combined ‘online’ to determine the dual norm of the residual. Here we compute the terms associated with the right-hand side. These terms are basis independent, hence we separate them from the rest of the calculations that are done in update_residual_terms. By default, inner product terms are also computed, but you can turn this feature off e.g. if you are already reading in that data from files.

◆ compute_max_error_bound()

virtual Real libMesh::RBConstruction::compute_max_error_bound ( )

virtual

(i) Compute the a posteriori error bound for each set of parameters in the training set, (ii) set current_parameters to the parameters that maximize the error bound, and (iii) return the maximum error bound.

◆ compute_output_dual_innerprods()

virtual void libMesh::RBConstruction::compute_output_dual_innerprods ( )

protectedvirtual

Compute and store the dual norm of each output functional.

◆ current_solution()

Number libMesh::System::current_solution ( const dof_id_type global_dof_number ) const

inherited

Returns: The current solution for the specified global DOF.

Definition at line 194 of file system.C.

References libMesh::System::_dof_map, and libMesh::System::current_local_solution.

Referenced by libMesh::ExactSolution::_compute_error(), libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::HPCoarsenTest::add_projection(), libMesh::ExactErrorEstimator::estimate_error(), libMesh::WeightedPatchRecoveryErrorEstimator::EstimateError::operator()(), libMesh::PatchRecoveryErrorEstimator::EstimateError::operator()(), libMesh::System::point_gradient(), libMesh::System::point_hessian(), libMesh::System::point_value(), libMesh::HPCoarsenTest::select_refinement(), libMesh::EnsightIO::write_scalar_ascii(), and libMesh::EnsightIO::write_vector_ascii().

 {
   // Check the sizes
   libmesh_assert_less (global_dof_number, _dof_map->n_dofs());
   libmesh_assert_less (global_dof_number, current_local_solution->size());
 
   return (*current_local_solution)(global_dof_number);
 }

◆ deactivate()

void libMesh::System::deactivate ( )

inlineinherited

Deactivates the system. Only active systems are solved.

Definition at line 2081 of file system.h.

References libMesh::System::_active.

 {
   _active = false;
 }

◆ detach_shell_matrix()

void libMesh::LinearImplicitSystem::detach_shell_matrix ( )

inlineinherited

Detaches a shell matrix. Same as attach_shell_matrix(nullptr).

Definition at line 185 of file linear_implicit_system.h.

References libMesh::LinearImplicitSystem::attach_shell_matrix().

185 { attach_shell_matrix(nullptr); }

libMesh::LinearImplicitSystem::attach_shell_matrix

void attach_shell_matrix(ShellMatrix< Number > *shell_matrix)

Definition: linear_implicit_system.C:158

◆ disable_cache()

void libMesh::ImplicitSystem::disable_cache ( )

overridevirtualinherited

Avoids use of any cached data that might affect any solve result. Should be overridden in derived systems.

Reimplemented from libMesh::System.

Definition at line 306 of file implicit_system.C.

References libMesh::System::assemble_before_solve, libMesh::ImplicitSystem::get_linear_solver(), and libMesh::LinearSolver< T >::reuse_preconditioner().

                                     {
   this->assemble_before_solve = true;
   this->get_linear_solver()->reuse_preconditioner(false);
 }

◆ disable_print_counter_info() [1/2]

void libMesh::ReferenceCounter::disable_print_counter_info ( )

staticinherited

Definition at line 106 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter.

Referenced by libMesh::LibMeshInit::LibMeshInit().

 {
   _enable_print_counter = false;
   return;
 }

◆ disable_print_counter_info() [2/2]

void libMesh::ReferenceCounter::disable_print_counter_info ( )

staticinherited

Definition at line 106 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter.

Referenced by libMesh::LibMeshInit::LibMeshInit().

 {
   _enable_print_counter = false;
   return;
 }

◆ enable_print_counter_info() [1/2]

void libMesh::ReferenceCounter::enable_print_counter_info ( )

staticinherited

Methods to enable/disable the reference counter output from print_info()

Definition at line 100 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter.

 {
   _enable_print_counter = true;
   return;
 }

◆ enable_print_counter_info() [2/2]

void libMesh::ReferenceCounter::enable_print_counter_info ( )

staticinherited

Methods to enable/disable the reference counter output from print_info()

Definition at line 100 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter.

 {
   _enable_print_counter = true;
   return;
 }

◆ enrich_basis_from_rhs_terms()

void libMesh::RBConstruction::enrich_basis_from_rhs_terms ( const bool resize_rb_eval_data = true )

This function computes one basis function for each rhs term. This is useful in some cases since we can avoid doing a full greedy if we know that we do not have any "left-hand side" parameters, for example.

◆ enrich_RB_space()

virtual void libMesh::RBConstruction::enrich_RB_space ( )

protectedvirtual

Add a new basis function to the RB space. This is called during train_reduced_basis.

Reimplemented in libMesh::TransientRBConstruction, and libMesh::RBEIMConstruction.

◆ final_linear_residual()

Real libMesh::LinearImplicitSystem::final_linear_residual ( ) const

inlineinherited

Returns: The final residual for the linear system solve.

Definition at line 169 of file linear_implicit_system.h.

References libMesh::LinearImplicitSystem::_final_linear_residual.

169 { return _final_linear_residual; }

libMesh::LinearImplicitSystem::_final_linear_residual

Real _final_linear_residual

Definition: linear_implicit_system.h:204

◆ forward_qoi_parameter_sensitivity()

void libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity	(	const QoISet &	qoi_indices,
		const ParameterVector &	parameters,
		SensitivityData &	sensitivities
	)

overridevirtualinherited

Solves for the derivative of each of the system's quantities of interest q in qoi[qoi_indices] with respect to each parameter in parameters, placing the result for qoi i and parameter j into sensitivities[i][j].

Uses the forward sensitivity method.

Currently uses finite differenced derivatives (partial q / partial p) and (partial R / partial p).

Reimplemented from libMesh::System.

Definition at line 807 of file implicit_system.C.

References std::abs(), libMesh::SensitivityData::allocate_data(), libMesh::ExplicitSystem::assemble_qoi(), libMesh::ExplicitSystem::assemble_qoi_derivative(), libMesh::ImplicitSystem::assembly(), libMesh::NumericVector< T >::close(), libMesh::SparseMatrix< T >::close(), libMesh::NumericVector< T >::dot(), libMesh::System::get_adjoint_rhs(), libMesh::System::get_sensitivity_solution(), libMesh::QoISet::has_index(), libMesh::ImplicitSystem::matrix, std::max(), libMesh::System::n_qois(), libMesh::System::qoi, libMesh::Real, libMesh::ExplicitSystem::rhs, libMesh::ImplicitSystem::sensitivity_solve(), libMesh::ParameterVector::size(), and libMesh::TOLERANCE.

 {
   ParameterVector & parameters =
     const_cast<ParameterVector &>(parameters_in);
 
   const unsigned int Np = cast_int<unsigned int>
     (parameters.size());
   const unsigned int Nq = this->n_qois();
 
   // An introduction to the problem:
   //
   // Residual R(u(p),p) = 0
   // partial R / partial u = J = system matrix
   //
   // This implies that:
   // d/dp(R) = 0
   // (partial R / partial p) +
   // (partial R / partial u) * (partial u / partial p) = 0
 
   // We first solve for (partial u / partial p) for each parameter:
   // J * (partial u / partial p) = - (partial R / partial p)
 
   this->sensitivity_solve(parameters);
 
   // Get ready to fill in sensitivities:
   sensitivities.allocate_data(qoi_indices, *this, parameters);
 
   // We use the identity:
   // dq/dp = (partial q / partial p) + (partial q / partial u) *
   //         (partial u / partial p)
 
   // We get (partial q / partial u) from the user
   this->assemble_qoi_derivative(qoi_indices,
                                 /* include_liftfunc = */ true,
                                 /* apply_constraints = */ false);
 
   // We don't need these to be closed() in this function, but libMesh
   // standard practice is to have them closed() by the time the
   // function exits
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       this->get_adjoint_rhs(i).close();
 
   for (unsigned int j=0; j != Np; ++j)
     {
       // We currently get partial derivatives via central differencing
 
       // (partial q / partial p) ~= (q(p+dp)-q(p-dp))/(2*dp)
 
       Number old_parameter = *parameters[j];
 
       const Real delta_p =
         TOLERANCE * std::max(std::abs(old_parameter), 1e-3);
 
       *parameters[j] = old_parameter - delta_p;
       this->assemble_qoi(qoi_indices);
       std::vector<Number> qoi_minus = this->qoi;
 
       *parameters[j] = old_parameter + delta_p;
       this->assemble_qoi(qoi_indices);
       std::vector<Number> & qoi_plus = this->qoi;
 
       std::vector<Number> partialq_partialp(Nq, 0);
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           partialq_partialp[i] = (qoi_plus[i] - qoi_minus[i]) / (2.*delta_p);
 
       // Don't leave the parameter changed
       *parameters[j] = old_parameter;
 
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           sensitivities[i][j] = partialq_partialp[i] +
             this->get_adjoint_rhs(i).dot(this->get_sensitivity_solution(j));
     }
 
   // All parameters have been reset.
   // We didn't cache the original rhs or matrix for memory reasons,
   // but we can restore them to a state consistent solution -
   // principle of least surprise.
   this->assembly(true, true);
   this->rhs->close();
   this->matrix->close();
   this->assemble_qoi(qoi_indices);
 }

◆ generate_training_parameters_deterministic()

static void libMesh::RBConstructionBase< LinearImplicitSystem >::generate_training_parameters_deterministic	(	const Parallel::Communicator &	communicator,
		std::map< std::string, bool >	log_param_scale,
		std::map< std::string, std::unique_ptr< NumericVector< Number >>> &	training_parameters_in,
		unsigned int	n_training_samples_in,
		const RBParameters &	min_parameters,
		const RBParameters &	max_parameters,
		bool	serial_training_set = `false`
	)

staticprotectedinherited

Static helper function for generating a deterministic set of parameters. Only works with 1 or 2 parameters (as defined by the lengths of min/max parameters vectors), otherwise throws an error.

◆ generate_training_parameters_random()

static void libMesh::RBConstructionBase< LinearImplicitSystem >::generate_training_parameters_random	(	const Parallel::Communicator &	communicator,
		std::map< std::string, bool >	log_param_scale,
		std::map< std::string, std::unique_ptr< NumericVector< Number >>> &	training_parameters_in,
		unsigned int	n_training_samples_in,
		const RBParameters &	min_parameters,
		const RBParameters &	max_parameters,
		int	training_parameters_random_seed = `-1`,
		bool	serial_training_set = `false`
	)

staticprotectedinherited

Static helper function for generating a randomized set of parameters.

◆ get_abs_training_tolerance()

Real libMesh::RBConstruction::get_abs_training_tolerance ( )

inline

Definition at line 193 of file rb_construction.h.

References abs_training_tolerance.

193 { return abs_training_tolerance; }

libMesh::RBConstruction::abs_training_tolerance

Real abs_training_tolerance

Definition: rb_construction.h:802

◆ get_adjoint_rhs() [1/2]

NumericVector< Number > & libMesh::System::get_adjoint_rhs ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's adjoint rhs vectors, by default the one corresponding to the first qoi. This what the user's QoI derivative code should assemble when setting up an adjoint problem

Definition at line 1031 of file system.C.

References libMesh::System::get_vector().

Referenced by libMesh::ImplicitSystem::adjoint_solve(), libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity(), libMesh::ImplicitSystem::qoi_parameter_hessian(), libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product(), and libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve().

 {
   std::ostringstream adjoint_rhs_name;
   adjoint_rhs_name << "adjoint_rhs" << i;
 
   return this->get_vector(adjoint_rhs_name.str());
 }

◆ get_adjoint_rhs() [2/2]

const NumericVector< Number > & libMesh::System::get_adjoint_rhs ( unsigned int i = 0 ) const

inherited

Returns: A reference to one of the system's adjoint rhs vectors, by default the one corresponding to the first qoi.

Definition at line 1041 of file system.C.

References libMesh::System::get_vector().

 {
   std::ostringstream adjoint_rhs_name;
   adjoint_rhs_name << "adjoint_rhs" << i;
 
   return this->get_vector(adjoint_rhs_name.str());
 }

◆ get_adjoint_solution() [1/2]

NumericVector< Number > & libMesh::System::get_adjoint_solution ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's adjoint solution vectors, by default the one corresponding to the first qoi.

Definition at line 969 of file system.C.

References libMesh::System::get_vector().

Referenced by libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::ImplicitSystem::adjoint_solve(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::AdjointResidualErrorEstimator::estimate_error(), libMesh::ImplicitSystem::qoi_parameter_hessian(), libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product(), and libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve().

 {
   std::ostringstream adjoint_name;
   adjoint_name << "adjoint_solution" << i;
 
   return this->get_vector(adjoint_name.str());
 }

◆ get_adjoint_solution() [2/2]

const NumericVector< Number > & libMesh::System::get_adjoint_solution ( unsigned int i = 0 ) const

inherited

Returns: A reference to one of the system's adjoint solution vectors, by default the one corresponding to the first qoi.

Definition at line 979 of file system.C.

References libMesh::System::get_vector().

 {
   std::ostringstream adjoint_name;
   adjoint_name << "adjoint_solution" << i;
 
   return this->get_vector(adjoint_name.str());
 }

◆ get_all_matrices()

virtual void libMesh::RBConstruction::get_all_matrices ( std::map< std::string, SparseMatrix< Number > *> & all_matrices )

virtual

Get a map that stores pointers to all of the matrices.

Reimplemented in libMesh::TransientRBConstruction.

◆ get_all_variable_numbers()

void libMesh::System::get_all_variable_numbers ( std::vector< unsigned int > & all_variable_numbers ) const

inherited

Fills all_variable_numbers with all the variable numbers for the variables that have been added to this system.

Definition at line 1258 of file system.C.

References libMesh::System::_variable_numbers, and libMesh::System::n_vars().

 {
   all_variable_numbers.resize(n_vars());
 
   // Make sure the variable exists
   std::map<std::string, unsigned short int>::const_iterator
     it = _variable_numbers.begin();
   std::map<std::string, unsigned short int>::const_iterator
     it_end = _variable_numbers.end();
 
   unsigned int count = 0;
   for ( ; it != it_end; ++it)
     {
       all_variable_numbers[count] = it->second;
       count++;
     }
 }

◆ get_all_vectors()

virtual void libMesh::RBConstruction::get_all_vectors ( std::map< std::string, NumericVector< Number > *> & all_vectors )

virtual

Get a map that stores pointers to all of the vectors.

◆ get_Aq()

SparseMatrix<Number>* libMesh::RBConstruction::get_Aq ( unsigned int q )

Get a pointer to Aq.

◆ get_closest_value()

static Real libMesh::RBParametrized::get_closest_value	(	Real	value,
		const std::vector< Real > &	list_of_values
	)

staticinherited

Returns: The closest entry to value from list_of_values.

◆ get_convergence_assertion_flag()

bool libMesh::RBConstruction::get_convergence_assertion_flag ( ) const

protected

Getter for the flag determining if convergence should be checked after each solve.

◆ get_delta_N()

unsigned int libMesh::RBConstruction::get_delta_N ( ) const

inline

Get delta_N, the number of basis functions we add to the RB space per iteration of the greedy algorithm. For steady-state systems, this should be 1, but can be more than 1 for time-dependent systems.

Definition at line 411 of file rb_construction.h.

References delta_N.

411 { return delta_N; }

libMesh::RBConstruction::delta_N

unsigned int delta_N

Definition: rb_construction.h:733

◆ get_deterministic_training_parameter_name()

const std::string& libMesh::RBConstructionBase< LinearImplicitSystem >::get_deterministic_training_parameter_name ( ) const

inherited

Get the name of the parameter that we will generate deterministic training parameters for.

◆ get_deterministic_training_parameter_repeats()

unsigned int libMesh::RBConstructionBase< LinearImplicitSystem >::get_deterministic_training_parameter_repeats ( ) const

inherited

Get the number of times each sample of the deterministic training parameter is repeated.

◆ get_discrete_parameter_values()

const std::map<std::string, std::vector<Real> >& libMesh::RBParametrized::get_discrete_parameter_values ( ) const

inherited

Get a const reference to the discrete parameter values.

◆ get_dof_map() [1/2]

const DofMap & libMesh::System::get_dof_map ( ) const

inlineinherited

Returns: A constant reference to this system's _dof_map.

Definition at line 2049 of file system.h.

References libMesh::System::_dof_map.

 {
   return *_dof_map;
 }

◆ get_dof_map() [2/2]

DofMap & libMesh::System::get_dof_map ( )

inlineinherited

Returns: A writable reference to this system's _dof_map.

Definition at line 2057 of file system.h.

References libMesh::System::_dof_map.

 {
   return *_dof_map;
 }

◆ get_equation_systems() [1/2]

const EquationSystems& libMesh::System::get_equation_systems ( ) const

inlineinherited

Returns: A constant reference to this system's parent EquationSystems object.

Definition at line 712 of file system.h.

References libMesh::System::_equation_systems.

712 { return _equation_systems; }

libMesh::System::_equation_systems

EquationSystems & _equation_systems

Definition: system.h:1890

◆ get_equation_systems() [2/2]

EquationSystems& libMesh::System::get_equation_systems ( )

inlineinherited

Returns: A reference to this system's parent EquationSystems object.

Definition at line 717 of file system.h.

References libMesh::System::_equation_systems.

717 { return _equation_systems; }

libMesh::System::_equation_systems

EquationSystems & _equation_systems

Definition: system.h:1890

◆ get_first_local_training_index()

numeric_index_type libMesh::RBConstructionBase< LinearImplicitSystem >::get_first_local_training_index ( ) const

inherited

Get the first local index of the training parameters.

◆ get_Fq()

NumericVector<Number>* libMesh::RBConstruction::get_Fq ( unsigned int q )

Get a pointer to Fq.

◆ get_global_max_error_pair()

static void libMesh::RBConstructionBase< LinearImplicitSystem >::get_global_max_error_pair	(	const Parallel::Communicator &	communicator,
		std::pair< numeric_index_type, Real > &	error_pair
	)

staticprotectedinherited

Static function to return the error pair (index,error) that is corresponds to the largest error on all processors.

◆ get_greedy_parameter()

const RBParameters& libMesh::RBConstruction::get_greedy_parameter ( unsigned int i )

Return the parameters chosen during the i^th step of the Greedy algorithm.

◆ get_info() [1/3]

std::string libMesh::ReferenceCounter::get_info ( )

staticinherited

Gets a string containing the reference information.

Definition at line 47 of file reference_counter.C.

References libMesh::ReferenceCounter::_counts, and libMesh::Quality::name().

Referenced by libMesh::ReferenceCounter::print_info().

 {
 #if defined(LIBMESH_ENABLE_REFERENCE_COUNTING) && defined(DEBUG)
 
   std::ostringstream oss;
 
   oss << '\n'
       << " ---------------------------------------------------------------------------- \n"
       << "| Reference count information                                                |\n"
       << " ---------------------------------------------------------------------------- \n";
 
   for (const auto & pr : _counts)
     {
       const std::string name(pr.first);
       const unsigned int creations    = pr.second.first;
       const unsigned int destructions = pr.second.second;
 
       oss << "| " << name << " reference count information:\n"
           << "|  Creations:    " << creations    << '\n'
           << "|  Destructions: " << destructions << '\n';
     }
 
   oss << " ---------------------------------------------------------------------------- \n";
 
   return oss.str();
 
 #else
 
   return "";
 
 #endif
 }

◆ get_info() [2/3]

std::string libMesh::ReferenceCounter::get_info ( )

staticinherited

Gets a string containing the reference information.

Definition at line 47 of file reference_counter.C.

References libMesh::ReferenceCounter::_counts, and libMesh::Quality::name().

Referenced by libMesh::ReferenceCounter::print_info().

 {
 #if defined(LIBMESH_ENABLE_REFERENCE_COUNTING) && defined(DEBUG)
 
   std::ostringstream oss;
 
   oss << '\n'
       << " ---------------------------------------------------------------------------- \n"
       << "| Reference count information                                                |\n"
       << " ---------------------------------------------------------------------------- \n";
 
   for (const auto & pr : _counts)
     {
       const std::string name(pr.first);
       const unsigned int creations    = pr.second.first;
       const unsigned int destructions = pr.second.second;
 
       oss << "| " << name << " reference count information:\n"
           << "|  Creations:    " << creations    << '\n'
           << "|  Destructions: " << destructions << '\n';
     }
 
   oss << " ---------------------------------------------------------------------------- \n";
 
   return oss.str();
 
 #else
 
   return "";
 
 #endif
 }

◆ get_info() [3/3]

std::string libMesh::System::get_info ( ) const

inherited

Returns: A string containing information about the system.

Definition at line 1658 of file system.C.

 {
   std::ostringstream oss;
 
 
   const std::string & sys_name = this->name();
 
   oss << "   System #"  << this->number() << ", \"" << sys_name << "\"\n"
       << "    Type \""  << this->system_type() << "\"\n"
       << "    Variables=";
 
   for (unsigned int vg=0; vg<this->n_variable_groups(); vg++)
     {
       const VariableGroup & vg_description (this->variable_group(vg));
 
       if (vg_description.n_variables() > 1) oss << "{ ";
       for (unsigned int vn=0; vn<vg_description.n_variables(); vn++)
         oss << "\"" << vg_description.name(vn) << "\" ";
       if (vg_description.n_variables() > 1) oss << "} ";
     }
 
   oss << '\n';
 
   oss << "    Finite Element Types=";
 #ifndef LIBMESH_ENABLE_INFINITE_ELEMENTS
   for (unsigned int vg=0; vg<this->n_variable_groups(); vg++)
     oss << "\""
         << Utility::enum_to_string<FEFamily>(this->get_dof_map().variable_group(vg).type().family)
         << "\" ";
 #else
   for (unsigned int vg=0; vg<this->n_variable_groups(); vg++)
     {
       oss << "\""
           << Utility::enum_to_string<FEFamily>(this->get_dof_map().variable_group(vg).type().family)
           << "\", \""
           << Utility::enum_to_string<FEFamily>(this->get_dof_map().variable_group(vg).type().radial_family)
           << "\" ";
     }
 
   oss << '\n' << "    Infinite Element Mapping=";
   for (unsigned int vg=0; vg<this->n_variable_groups(); vg++)
     oss << "\""
         << Utility::enum_to_string<InfMapType>(this->get_dof_map().variable_group(vg).type().inf_map)
         << "\" ";
 #endif
 
   oss << '\n';
 
   oss << "    Approximation Orders=";
   for (unsigned int vg=0; vg<this->n_variable_groups(); vg++)
     {
 #ifndef LIBMESH_ENABLE_INFINITE_ELEMENTS
       oss << "\""
           << Utility::enum_to_string<Order>(this->get_dof_map().variable_group(vg).type().order)
           << "\" ";
 #else
       oss << "\""
           << Utility::enum_to_string<Order>(this->get_dof_map().variable_group(vg).type().order)
           << "\", \""
           << Utility::enum_to_string<Order>(this->get_dof_map().variable_group(vg).type().radial_order)
           << "\" ";
 #endif
     }
 
   oss << '\n';
 
   oss << "    n_dofs()="             << this->n_dofs()             << '\n';
   oss << "    n_local_dofs()="       << this->n_local_dofs()       << '\n';
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
   oss << "    n_constrained_dofs()=" << this->n_constrained_dofs() << '\n';
   oss << "    n_local_constrained_dofs()=" << this->n_local_constrained_dofs() << '\n';
 #endif
 
   oss << "    " << "n_vectors()="  << this->n_vectors()  << '\n';
   oss << "    " << "n_matrices()="  << this->n_matrices()  << '\n';
   //   oss << "    " << "n_additional_matrices()=" << this->n_additional_matrices() << '\n';
 
   oss << this->get_dof_map().get_info();
 
   return oss.str();
 }

◆ get_inner_product_assembly()

ElemAssembly& libMesh::RBConstruction::get_inner_product_assembly ( )

Returns: A reference to the inner product assembly object

◆ get_inner_product_matrix()

SparseMatrix<Number>* libMesh::RBConstruction::get_inner_product_matrix ( )

Get a pointer to inner_product_matrix. Accessing via this function, rather than directly through the class member allows us to do error checking (e.g. inner_product_matrix is not defined in low-memory mode).

◆ get_last_local_training_index()

numeric_index_type libMesh::RBConstructionBase< LinearImplicitSystem >::get_last_local_training_index ( ) const

inherited

Get the last local index of the training parameters.

◆ get_linear_solve_parameters()

std::pair< unsigned int, Real > libMesh::ImplicitSystem::get_linear_solve_parameters ( ) const

virtualinherited

Returns: An integer corresponding to the upper iteration count limit and a Real corresponding to the convergence tolerance to be used in linear adjoint and/or sensitivity solves

Reimplemented in libMesh::NonlinearImplicitSystem, and libMesh::DifferentiableSystem.

Definition at line 1421 of file implicit_system.C.

References libMesh::Parameters::get(), libMesh::System::get_equation_systems(), libMesh::EquationSystems::parameters, and libMesh::Real.

Referenced by libMesh::ImplicitSystem::adjoint_solve(), libMesh::ImplicitSystem::sensitivity_solve(), libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve(), and libMesh::ImplicitSystem::weighted_sensitivity_solve().

 {
   return std::make_pair(this->get_equation_systems().parameters.get<unsigned int>("linear solver maximum iterations"),
                         this->get_equation_systems().parameters.get<Real>("linear solver tolerance"));
 }

◆ get_linear_solver()

LinearSolver< Number > * libMesh::LinearImplicitSystem::get_linear_solver ( ) const

overridevirtualinherited

Returns: A pointer to a linear solver appropriate for use in adjoint and/or sensitivity solves

Reimplemented from libMesh::ImplicitSystem.

Definition at line 353 of file linear_implicit_system.C.

References libMesh::LinearImplicitSystem::linear_solver.

 {
   return linear_solver.get();
 }

◆ get_local_n_training_samples()

numeric_index_type libMesh::RBConstructionBase< LinearImplicitSystem >::get_local_n_training_samples ( ) const

inherited

Get the total number of training samples local to this processor.

◆ get_matrix() [1/2]

const SparseMatrix< Number > & libMesh::ImplicitSystem::get_matrix ( const std::string & mat_name ) const

inherited

Returns: A const reference to this system's additional matrix named mat_name.

None of these matrices is involved in the solution process. Access is only granted when the matrix is already properly initialized.

Definition at line 263 of file implicit_system.C.

References libMesh::ImplicitSystem::_matrices.

Referenced by libMesh::NewmarkSystem::compute_matrix(), libMesh::EigenTimeSolver::solve(), and libMesh::NewmarkSystem::update_rhs().

 {
   // Make sure the matrix exists
   const_matrices_iterator pos = _matrices.find (mat_name);
 
   if (pos == _matrices.end())
     libmesh_error_msg("ERROR: matrix " << mat_name << " does not exist in this system!");
 
   return *(pos->second);
 }

◆ get_matrix() [2/2]

SparseMatrix< Number > & libMesh::ImplicitSystem::get_matrix ( const std::string & mat_name )

inherited

Returns: A writable reference to this system's additional matrix named mat_name.

None of these matrices is involved in the solution process. Access is only granted when the matrix is already properly initialized.

Definition at line 276 of file implicit_system.C.

References libMesh::ImplicitSystem::_matrices.

 {
   // Make sure the matrix exists
   matrices_iterator pos = _matrices.find (mat_name);
 
   if (pos == _matrices.end())
     libmesh_error_msg("ERROR: matrix " << mat_name << " does not exist in this system!");
 
   return *(pos->second);
 }

◆ get_matrix_for_output_dual_solves()

virtual SparseMatrix<Number>& libMesh::RBConstruction::get_matrix_for_output_dual_solves ( )

protectedvirtual

Return the matrix for the output residual dual norm solves. By default we use the inner product matrix for steady state problems.

Reimplemented in libMesh::TransientRBConstruction.

◆ get_mesh() [1/2]

const MeshBase & libMesh::System::get_mesh ( ) const

inlineinherited

Returns: A constant reference to this systems's _mesh.

Definition at line 2033 of file system.h.

References libMesh::System::_mesh.

 {
   return _mesh;
 }

◆ get_mesh() [2/2]

MeshBase & libMesh::System::get_mesh ( )

inlineinherited

Returns: A reference to this systems's _mesh.

Definition at line 2041 of file system.h.

References libMesh::System::_mesh.

 {
   return _mesh;
 }

◆ get_n_continuous_params()

unsigned int libMesh::RBParametrized::get_n_continuous_params ( ) const

inherited

Get the number of continuous parameters.

◆ get_n_discrete_params()

unsigned int libMesh::RBParametrized::get_n_discrete_params ( ) const

inherited

Get the number of discrete parameters.

◆ get_n_params()

unsigned int libMesh::RBParametrized::get_n_params ( ) const

inherited

Get the number of parameters.

◆ get_n_training_samples()

numeric_index_type libMesh::RBConstructionBase< LinearImplicitSystem >::get_n_training_samples ( ) const

inherited

Get the total number of training samples.

◆ get_Nmax()

unsigned int libMesh::RBConstruction::get_Nmax ( ) const

inline

Get/set Nmax, the maximum number of RB functions we are willing to compute.

Definition at line 206 of file rb_construction.h.

References Nmax.

206 { return Nmax; }

libMesh::RBConstruction::Nmax

unsigned int Nmax

Definition: rb_construction.h:727

◆ get_non_dirichlet_Aq()

SparseMatrix<Number>* libMesh::RBConstruction::get_non_dirichlet_Aq ( unsigned int q )

Get a pointer to non_dirichlet_Aq.

◆ get_non_dirichlet_Aq_if_avail()

SparseMatrix<Number>* libMesh::RBConstruction::get_non_dirichlet_Aq_if_avail ( unsigned int q )

Get a pointer to non_dirichlet_Aq if it's available, otherwise get Aq.

◆ get_non_dirichlet_Fq()

NumericVector<Number>* libMesh::RBConstruction::get_non_dirichlet_Fq ( unsigned int q )

Get a pointer to non-Dirichlet Fq.

◆ get_non_dirichlet_Fq_if_avail()

NumericVector<Number>* libMesh::RBConstruction::get_non_dirichlet_Fq_if_avail ( unsigned int q )

Get a pointer to non_dirichlet_Fq if it's available, otherwise get Fq.

◆ get_non_dirichlet_inner_product_matrix()

SparseMatrix<Number>* libMesh::RBConstruction::get_non_dirichlet_inner_product_matrix ( )

Get the non-Dirichlet (or more generally no-constraints) version of the inner-product matrix. This is useful for performing multiplications on vectors that already have constraints enforced.

◆ get_non_dirichlet_inner_product_matrix_if_avail()

SparseMatrix<Number>* libMesh::RBConstruction::get_non_dirichlet_inner_product_matrix_if_avail ( )

Get the non-Dirichlet inner-product matrix if it's available, otherwise get the inner-product matrix with constraints.

◆ get_non_dirichlet_output_vector()

NumericVector<Number>* libMesh::RBConstruction::get_non_dirichlet_output_vector	(	unsigned int	n,
		unsigned int	q_l
	)

Get a pointer to non-Dirichlet output vector.

◆ get_normalize_rb_bound_in_greedy()

bool libMesh::RBConstruction::get_normalize_rb_bound_in_greedy ( )

inline

Definition at line 200 of file rb_construction.h.

References normalize_rb_bound_in_greedy.

200 { return normalize_rb_bound_in_greedy; }

libMesh::RBConstruction::normalize_rb_bound_in_greedy

bool normalize_rb_bound_in_greedy

Definition: rb_construction.h:808

◆ get_output_vector()

NumericVector<Number>* libMesh::RBConstruction::get_output_vector	(	unsigned int	n,
		unsigned int	q_l
	)

Get a pointer to the n^th output.

◆ get_output_vectors()

virtual void libMesh::RBConstruction::get_output_vectors ( std::map< std::string, NumericVector< Number > *> & all_vectors )

virtual

Get a map that stores pointers to all of the vectors.

◆ get_parameter_max()

Real libMesh::RBParametrized::get_parameter_max ( const std::string & param_name ) const

inherited

Get maximum allowable value of parameter param_name.

◆ get_parameter_min()

Real libMesh::RBParametrized::get_parameter_min ( const std::string & param_name ) const

inherited

Get minimum allowable value of parameter param_name.

◆ get_parameter_names()

std::set<std::string> libMesh::RBParametrized::get_parameter_names ( ) const

inherited

Get a set that stores the parameter names.

◆ get_parameters()

const RBParameters& libMesh::RBParametrized::get_parameters ( ) const

inherited

Get the current parameters.

◆ get_parameters_max()

const RBParameters& libMesh::RBParametrized::get_parameters_max ( ) const

inherited

Get an RBParameters object that specifies the maximum allowable value for each parameter.

◆ get_parameters_min()

const RBParameters& libMesh::RBParametrized::get_parameters_min ( ) const

inherited

Get an RBParameters object that specifies the minimum allowable value for each parameter.

◆ get_params_from_training_set()

RBParameters libMesh::RBConstructionBase< LinearImplicitSystem >::get_params_from_training_set ( unsigned int index )

protectedinherited

Return the RBParameters in index index of training set.

◆ get_rb_assembly_expansion()

RBAssemblyExpansion& libMesh::RBConstruction::get_rb_assembly_expansion ( )

Returns: A reference to the rb_assembly_expansion object

◆ get_RB_error_bound()

virtual Real libMesh::RBConstruction::get_RB_error_bound ( )

protectedvirtual

Returns: The RB error bound for the current parameters.

Used in the Greedy algorithm to select the next parameter.

Reimplemented in libMesh::RBEIMConstruction.

◆ get_rb_evaluation()

RBEvaluation& libMesh::RBConstruction::get_rb_evaluation ( )

Get a reference to the RBEvaluation object.

◆ get_rb_theta_expansion()

RBThetaExpansion& libMesh::RBConstruction::get_rb_theta_expansion ( )

Get a reference to the RBThetaExpansion object that that belongs to rb_eval.

◆ get_rel_training_tolerance()

Real libMesh::RBConstruction::get_rel_training_tolerance ( )

inline

Definition at line 186 of file rb_construction.h.

References rel_training_tolerance.

186 { return rel_training_tolerance; }

libMesh::RBConstruction::rel_training_tolerance

Real rel_training_tolerance

Definition: rb_construction.h:801

◆ get_sensitivity_rhs() [1/2]

NumericVector< Number > & libMesh::System::get_sensitivity_rhs ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's sensitivity rhs vectors, by default the one corresponding to the first parameter. By default these vectors are built by the library, using finite differences, when assemble_residual_derivatives() is called.

When assembled, this vector should hold -(partial R / partial p_i)

Definition at line 1061 of file system.C.

References libMesh::System::get_vector().

Referenced by libMesh::ImplicitSystem::adjoint_qoi_parameter_sensitivity(), and libMesh::ImplicitSystem::sensitivity_solve().

 {
   std::ostringstream sensitivity_rhs_name;
   sensitivity_rhs_name << "sensitivity_rhs" << i;
 
   return this->get_vector(sensitivity_rhs_name.str());
 }

◆ get_sensitivity_rhs() [2/2]

const NumericVector< Number > & libMesh::System::get_sensitivity_rhs ( unsigned int i = 0 ) const

inherited

Returns: A reference to one of the system's sensitivity rhs vectors, by default the one corresponding to the first parameter.

Definition at line 1071 of file system.C.

References libMesh::System::get_vector().

 {
   std::ostringstream sensitivity_rhs_name;
   sensitivity_rhs_name << "sensitivity_rhs" << i;
 
   return this->get_vector(sensitivity_rhs_name.str());
 }

◆ get_sensitivity_solution() [1/2]

NumericVector< Number > & libMesh::System::get_sensitivity_solution ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's solution sensitivity vectors, by default the one corresponding to the first parameter.

Definition at line 916 of file system.C.

References libMesh::System::get_vector().

Referenced by libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity(), libMesh::ImplicitSystem::qoi_parameter_hessian(), and libMesh::ImplicitSystem::sensitivity_solve().

 {
   std::ostringstream sensitivity_name;
   sensitivity_name << "sensitivity_solution" << i;
 
   return this->get_vector(sensitivity_name.str());
 }

◆ get_sensitivity_solution() [2/2]

const NumericVector< Number > & libMesh::System::get_sensitivity_solution ( unsigned int i = 0 ) const

inherited

Returns: A reference to one of the system's solution sensitivity vectors, by default the one corresponding to the first parameter.

Definition at line 926 of file system.C.

References libMesh::System::get_vector().

 {
   std::ostringstream sensitivity_name;
   sensitivity_name << "sensitivity_solution" << i;
 
   return this->get_vector(sensitivity_name.str());
 }

◆ get_shell_matrix()

ShellMatrix<Number>* libMesh::LinearImplicitSystem::get_shell_matrix ( )

inlineinherited

Returns: A pointer to the currently attached shell matrix, if any, otherwise nullptr.

Definition at line 191 of file linear_implicit_system.h.

References libMesh::LinearImplicitSystem::_shell_matrix.

191 { return _shell_matrix; }

libMesh::LinearImplicitSystem::_shell_matrix

ShellMatrix< Number > * _shell_matrix

Definition: linear_implicit_system.h:209

◆ get_vector() [1/4]

const NumericVector< Number > & libMesh::System::get_vector ( const std::string & vec_name ) const

inherited

Returns: A const reference to this system's additional vector named vec_name. Access is only granted when the vector is already properly initialized.

Definition at line 774 of file system.C.

References libMesh::System::_vectors.

Referenced by libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::UnsteadySolver::adjoint_advance_timestep(), libMesh::NewmarkSolver::advance_timestep(), libMesh::AdaptiveTimeSolver::advance_timestep(), libMesh::UnsteadySolver::advance_timestep(), libMesh::System::compare(), libMesh::NewmarkSolver::compute_initial_accel(), libMesh::UnsteadySolver::du(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::System::get_adjoint_rhs(), libMesh::System::get_adjoint_solution(), libMesh::System::get_sensitivity_rhs(), libMesh::System::get_sensitivity_solution(), libMesh::System::get_weighted_sensitivity_adjoint_solution(), libMesh::System::get_weighted_sensitivity_solution(), libMesh::NewmarkSystem::initial_conditions(), libMesh::NewmarkSolver::project_initial_accel(), libMesh::SecondOrderUnsteadySolver::project_initial_rate(), libMesh::SecondOrderUnsteadySolver::reinit(), libMesh::UnsteadySolver::reinit(), libMesh::MemorySolutionHistory::retrieve(), libMesh::UnsteadySolver::retrieve_timestep(), libMesh::TwostepTimeSolver::solve(), libMesh::FrequencySystem::solve(), libMesh::NewmarkSystem::update_rhs(), and libMesh::NewmarkSystem::update_u_v_a().

 {
   // Make sure the vector exists
   const_vectors_iterator pos = _vectors.find(vec_name);
 
   if (pos == _vectors.end())
     libmesh_error_msg("ERROR: vector " << vec_name << " does not exist in this system!");
 
   return *(pos->second);
 }

◆ get_vector() [2/4]

NumericVector< Number > & libMesh::System::get_vector ( const std::string & vec_name )

inherited

Returns: A writable reference to this system's additional vector named vec_name. Access is only granted when the vector is already properly initialized.

Definition at line 787 of file system.C.

References libMesh::System::_vectors.

 {
   // Make sure the vector exists
   vectors_iterator pos = _vectors.find(vec_name);
 
   if (pos == _vectors.end())
     libmesh_error_msg("ERROR: vector " << vec_name << " does not exist in this system!");
 
   return *(pos->second);
 }

◆ get_vector() [3/4]

const NumericVector< Number > & libMesh::System::get_vector ( const unsigned int vec_num ) const

inherited

Returns: A const reference to this system's additional vector number vec_num (where the vectors are counted starting with 0).

Definition at line 800 of file system.C.

References libMesh::System::vectors_begin(), and libMesh::System::vectors_end().

 {
   const_vectors_iterator v = vectors_begin();
   const_vectors_iterator v_end = vectors_end();
   unsigned int num = 0;
   while ((num<vec_num) && (v!=v_end))
     {
       num++;
       ++v;
     }
   libmesh_assert (v != v_end);
   return *(v->second);
 }

◆ get_vector() [4/4]

NumericVector< Number > & libMesh::System::get_vector ( const unsigned int vec_num )

inherited

Returns: A writable reference to this system's additional vector number vec_num (where the vectors are counted starting with 0).

Definition at line 816 of file system.C.

References libMesh::System::vectors_begin(), and libMesh::System::vectors_end().

 {
   vectors_iterator v = vectors_begin();
   vectors_iterator v_end = vectors_end();
   unsigned int num = 0;
   while ((num<vec_num) && (v!=v_end))
     {
       num++;
       ++v;
     }
   libmesh_assert (v != v_end);
   return *(v->second);
 }

◆ get_weighted_sensitivity_adjoint_solution() [1/2]

NumericVector< Number > & libMesh::System::get_weighted_sensitivity_adjoint_solution ( unsigned int i = 0 )

inherited

Returns: A reference to one of the system's weighted sensitivity adjoint solution vectors, by default the one corresponding to the first qoi.

Definition at line 1001 of file system.C.

References libMesh::System::get_vector().

Referenced by libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product(), and libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve().

 {
   std::ostringstream adjoint_name;
   adjoint_name << "weighted_sensitivity_adjoint_solution" << i;
 
   return this->get_vector(adjoint_name.str());
 }

◆ get_weighted_sensitivity_adjoint_solution() [2/2]

const NumericVector< Number > & libMesh::System::get_weighted_sensitivity_adjoint_solution ( unsigned int i = 0 ) const

inherited

Returns: A reference to one of the system's weighted sensitivity adjoint solution vectors, by default the one corresponding to the first qoi.

Definition at line 1011 of file system.C.

References libMesh::System::get_vector().

 {
   std::ostringstream adjoint_name;
   adjoint_name << "weighted_sensitivity_adjoint_solution" << i;
 
   return this->get_vector(adjoint_name.str());
 }

◆ get_weighted_sensitivity_solution() [1/2]

NumericVector< Number > & libMesh::System::get_weighted_sensitivity_solution ( )

inherited

Returns: A reference to the solution of the last weighted sensitivity solve

Definition at line 943 of file system.C.

References libMesh::System::get_vector().

Referenced by libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product(), and libMesh::ImplicitSystem::weighted_sensitivity_solve().

 {
   return this->get_vector("weighted_sensitivity_solution");
 }

◆ get_weighted_sensitivity_solution() [2/2]

const NumericVector< Number > & libMesh::System::get_weighted_sensitivity_solution ( ) const

inherited

Returns: A reference to the solution of the last weighted sensitivity solve

Definition at line 950 of file system.C.

References libMesh::System::get_vector().

 {
   return this->get_vector("weighted_sensitivity_solution");
 }

◆ greedy_termination_test()

virtual bool libMesh::RBConstruction::greedy_termination_test	(	Real	abs_greedy_error,
		Real	initial_greedy_error,
		int	count
	)

protectedvirtual

Function that indicates when to terminate the Greedy basis training. Override in subclasses to specialize.

Reimplemented in libMesh::TransientRBConstruction.

◆ has_variable()

bool libMesh::System::has_variable ( const std::string & var ) const

inherited

Returns: true if a variable named var exists in this System

Definition at line 1236 of file system.C.

References libMesh::System::_variable_numbers.

Referenced by libMesh::GMVIO::copy_nodal_solution().

 {
   return _variable_numbers.count(var);
 }

◆ have_matrix()

bool libMesh::ImplicitSystem::have_matrix ( const std::string & mat_name ) const

inlineinherited

Returns: true if this System has a matrix associated with the given name, false otherwise.

Definition at line 419 of file implicit_system.h.

References libMesh::ImplicitSystem::_matrices.

Referenced by libMesh::ImplicitSystem::add_matrix(), and libMesh::EigenTimeSolver::init().

 {
   return (_matrices.count(mat_name));
 }

◆ have_vector()

bool libMesh::System::have_vector ( const std::string & vec_name ) const

inlineinherited

Returns: true if this System has a vector associated with the given name, false otherwise.

Definition at line 2225 of file system.h.

References libMesh::System::_vectors.

Referenced by libMesh::System::add_vector().

 {
   return (_vectors.count(vec_name));
 }

◆ hide_output()

bool& libMesh::System::hide_output ( )

inlineinherited

Returns: A writable reference to a boolean that determines if this system can be written to file or not. If set to true, then EquationSystems::write will ignore this system.

Definition at line 1662 of file system.h.

References libMesh::System::_hide_output.

1662 { return _hide_output; }

libMesh::System::_hide_output

bool _hide_output

Definition: system.h:2009

◆ identify_variable_groups() [1/2]

bool libMesh::System::identify_variable_groups ( ) const

inlineinherited

Returns: true when VariableGroup structures should be automatically identified, false otherwise.

Definition at line 2201 of file system.h.

References libMesh::System::_identify_variable_groups.

Referenced by libMesh::System::add_variable().

 {
   return _identify_variable_groups;
 }

◆ identify_variable_groups() [2/2]

void libMesh::System::identify_variable_groups ( const bool ivg )

inlineinherited

Toggle automatic VariableGroup identification.

Definition at line 2209 of file system.h.

References libMesh::System::_identify_variable_groups.

 {
   _identify_variable_groups = ivg;
 }

◆ increment_constructor_count() [1/2]

void libMesh::ReferenceCounter::increment_constructor_count ( const std::string & name )

inlineprotectedinherited

Increments the construction counter. Should be called in the constructor of any derived class that will be reference counted.

Definition at line 181 of file reference_counter.h.

References libMesh::ReferenceCounter::_counts, libMesh::Quality::name(), and libMesh::Threads::spin_mtx.

Referenced by libMesh::ReferenceCountedObject< RBParametrized >::ReferenceCountedObject().

 {
   Threads::spin_mutex::scoped_lock lock(Threads::spin_mtx);
   std::pair<unsigned int, unsigned int> & p = _counts[name];
 
   p.first++;
 }

◆ increment_constructor_count() [2/2]

void libMesh::ReferenceCounter::increment_constructor_count ( const std::string & name )

inlineprotectedinherited

Increments the construction counter. Should be called in the constructor of any derived class that will be reference counted.

Definition at line 181 of file reference_counter.h.

References libMesh::ReferenceCounter::_counts, libMesh::Quality::name(), and libMesh::Threads::spin_mtx.

Referenced by libMesh::ReferenceCountedObject< RBParametrized >::ReferenceCountedObject().

 {
   Threads::spin_mutex::scoped_lock lock(Threads::spin_mtx);
   std::pair<unsigned int, unsigned int> & p = _counts[name];
 
   p.first++;
 }

◆ increment_destructor_count() [1/2]

void libMesh::ReferenceCounter::increment_destructor_count ( const std::string & name )

inlineprotectedinherited

Increments the destruction counter. Should be called in the destructor of any derived class that will be reference counted.

Definition at line 194 of file reference_counter.h.

References libMesh::ReferenceCounter::_counts, libMesh::Quality::name(), and libMesh::Threads::spin_mtx.

Referenced by libMesh::ReferenceCountedObject< RBParametrized >::~ReferenceCountedObject().

 {
   Threads::spin_mutex::scoped_lock lock(Threads::spin_mtx);
   std::pair<unsigned int, unsigned int> & p = _counts[name];
 
   p.second++;
 }

◆ increment_destructor_count() [2/2]

void libMesh::ReferenceCounter::increment_destructor_count ( const std::string & name )

inlineprotectedinherited

Increments the destruction counter. Should be called in the destructor of any derived class that will be reference counted.

Definition at line 194 of file reference_counter.h.

References libMesh::ReferenceCounter::_counts, libMesh::Quality::name(), and libMesh::Threads::spin_mtx.

Referenced by libMesh::ReferenceCountedObject< RBParametrized >::~ReferenceCountedObject().

 {
   Threads::spin_mutex::scoped_lock lock(Threads::spin_mtx);
   std::pair<unsigned int, unsigned int> & p = _counts[name];
 
   p.second++;
 }

◆ init()

void libMesh::System::init ( )

inherited

Initializes degrees of freedom on the current mesh. Sets the

Definition at line 237 of file system.C.

References libMesh::System::_basic_system_only, libMesh::System::init_data(), libMesh::System::is_initialized(), libMesh::System::n_vars(), and libMesh::System::user_initialization().

 {
   // Calling init() twice on the same system currently works evil
   // magic, whether done directly or via EquationSystems::read()
   libmesh_assert(!this->is_initialized());
 
   // First initialize any required data:
   // either only the basic System data
   if (_basic_system_only)
     System::init_data();
   // or all the derived class' data too
   else
     this->init_data();
 
   // If no variables have been added to this system
   // don't do anything
   if (!this->n_vars())
     return;
 
   // Then call the user-provided initialization function
   this->user_initialization();
 }

◆ init_context()

virtual void libMesh::RBConstruction::init_context ( FEMContext & )

inlineprotectedvirtual

Initialize the FEMContext prior to performing an element loop. Reimplement this in derived classes in order to call FE::get_*() as the particular physics requires.

Definition at line 707 of file rb_construction.h.

707 {}

◆ init_data()

virtual void libMesh::RBConstructionBase< LinearImplicitSystem >::init_data ( )

protectedvirtualinherited

Initializes the member data fields associated with the system, so that, e.g., assemble() may be used.

Reimplemented from libMesh::LinearImplicitSystem.

Reimplemented in libMesh::RBEIMConstruction.

◆ init_matrices()

void libMesh::ImplicitSystem::init_matrices ( )

protectedvirtualinherited

Initializes the matrices associated with this system.

Definition at line 106 of file implicit_system.C.

References libMesh::ImplicitSystem::_can_add_matrices, libMesh::ImplicitSystem::_matrices, libMesh::DofMap::attach_matrix(), libMesh::DofMap::compute_sparsity(), libMesh::System::get_dof_map(), libMesh::System::get_mesh(), libMesh::SparseMatrix< T >::initialized(), libMesh::DofMap::is_attached(), and libMesh::ImplicitSystem::matrix.

Referenced by libMesh::ImplicitSystem::init_data().

 {
   libmesh_assert(matrix);
 
   // Check for quick return in case the system matrix
   // (and by extension all the matrices) has already
   // been initialized
   if (matrix->initialized())
     return;
 
   // Get a reference to the DofMap
   DofMap & dof_map = this->get_dof_map();
 
   // no chance to add other matrices
   _can_add_matrices = false;
 
   // Tell the matrices about the dof map, and vice versa
   for (auto & pr : _matrices)
     {
       SparseMatrix<Number> & m = *(pr.second);
       libmesh_assert (!m.initialized());
 
       // We want to allow repeated init() on systems, but we don't
       // want to attach the same matrix to the DofMap twice
       if (!dof_map.is_attached(m))
         dof_map.attach_matrix (m);
     }
 
   // Compute the sparsity pattern for the current
   // mesh and DOF distribution.  This also updates
   // additional matrices, \p DofMap now knows them
   dof_map.compute_sparsity (this->get_mesh());
 
   // Initialize matrices
   for (auto & pr : _matrices)
     pr.second->init ();
 
   // Set the additional matrices to 0.
   for (auto & pr : _matrices)
     pr.second->zero ();
 }

◆ initialize_parameters() [1/2]

void libMesh::RBParametrized::initialize_parameters	(	const RBParameters &	mu_min_in,
		const RBParameters &	mu_max_in,
		const std::map< std::string, std::vector< Real >> &	discrete_parameter_values
	)

inherited

Initialize the parameter ranges and set current_parameters.

◆ initialize_parameters() [2/2]

void libMesh::RBParametrized::initialize_parameters ( const RBParametrized & rb_parametrized )

inherited

Initialize the parameter ranges and set current_parameters.

◆ initialize_rb_construction()

virtual void libMesh::RBConstruction::initialize_rb_construction	(	bool	skip_matrix_assembly = `false`,
		bool	skip_vector_assembly = `false`
	)

virtual

Allocate all the data structures necessary for the construction stage of the RB method. This function also performs matrix and vector assembly of the "truth" affine expansion.

We can optionally skip the matrix or vector assembly steps by setting skip_matrix_assembly = true, or skip_vector_assembly = true, respectively.

Reimplemented in libMesh::RBEIMConstruction, and libMesh::TransientRBConstruction.

◆ initialize_training_parameters()

virtual void libMesh::RBConstructionBase< LinearImplicitSystem >::initialize_training_parameters	(	const RBParameters &	mu_min,
		const RBParameters &	mu_max,
		unsigned int	n_training_parameters,
		std::map< std::string, bool >	log_param_scale,
		bool	deterministic = `true`
	)

virtualinherited

Initialize the parameter ranges and indicate whether deterministic or random training parameters should be used and whether or not we want the parameters to be scaled logarithmically.

◆ is_adjoint_already_solved()

bool libMesh::System::is_adjoint_already_solved ( ) const

inlineinherited

Accessor for the adjoint_already_solved boolean

Definition at line 388 of file system.h.

References libMesh::System::adjoint_already_solved.

Referenced by libMesh::ImplicitSystem::adjoint_qoi_parameter_sensitivity(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::AdjointResidualErrorEstimator::estimate_error(), libMesh::ImplicitSystem::qoi_parameter_hessian(), and libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product().

389 { return adjoint_already_solved;}

libMesh::System::adjoint_already_solved

bool adjoint_already_solved

Definition: system.h:2003

◆ is_discrete_parameter()

bool libMesh::RBParametrized::is_discrete_parameter ( const std::string & mu_name ) const

inherited

Is parameter mu_name discrete?

◆ is_initialized()

bool libMesh::System::is_initialized ( )

inlineinherited

Returns: true iff this system has been initialized.

Definition at line 2089 of file system.h.

References libMesh::System::_is_initialized.

Referenced by libMesh::System::add_variable(), libMesh::System::add_variables(), and libMesh::System::init().

 {
   return _is_initialized;
 }

◆ is_quiet()

bool libMesh::RBConstructionBase< LinearImplicitSystem >::is_quiet ( ) const

inlineinherited

Is the system in quiet mode?

Definition at line 98 of file rb_construction_base.h.

99 { return this->quiet_mode; }

libMesh::RBConstructionBase< LinearImplicitSystem >::quiet_mode

bool quiet_mode

Definition: rb_construction_base.h:239

◆ is_rb_eval_initialized()

bool libMesh::RBConstruction::is_rb_eval_initialized ( ) const

Returns: true if rb_eval is initialized. False, otherwise.

◆ load_basis_function()

virtual void libMesh::RBConstruction::load_basis_function ( unsigned int i )

virtual

Load the i^th RB function into the RBConstruction solution vector.

Reimplemented in libMesh::RBEIMConstruction.

◆ load_rb_solution()

virtual void libMesh::RBConstruction::load_rb_solution ( )

virtual

Load the RB solution from the most recent solve with rb_eval into this system's solution vector.

Reimplemented in libMesh::TransientRBConstruction, and libMesh::RBEIMConstruction.

◆ load_training_set()

virtual void libMesh::RBConstructionBase< LinearImplicitSystem >::load_training_set ( std::map< std::string, std::vector< Number >> & new_training_set )

virtualinherited

Overwrite the training parameters with new_training_set.

◆ local_dof_indices()

void libMesh::System::local_dof_indices	(	const unsigned int	var,
		std::set< dof_id_type > &	var_indices
	)		const

inherited

Fills the std::set with the degrees of freedom on the local processor corresponding the the variable number passed in.

Definition at line 1277 of file system.C.

References libMesh::DofMap::dof_indices(), libMesh::DofMap::end_dof(), libMesh::DofMap::first_dof(), libMesh::System::get_dof_map(), and libMesh::System::get_mesh().

Referenced by libMesh::System::discrete_var_norm().

 {
   // Make sure the set is clear
   var_indices.clear();
 
   std::vector<dof_id_type> dof_indices;
 
   const dof_id_type
     first_local = this->get_dof_map().first_dof(),
     end_local   = this->get_dof_map().end_dof();
 
   // Begin the loop over the elements
   for (const auto & elem : this->get_mesh().active_local_element_ptr_range())
     {
       this->get_dof_map().dof_indices (elem, dof_indices, var);
 
       for (std::size_t i=0; i<dof_indices.size(); i++)
         {
           dof_id_type dof = dof_indices[i];
 
           //If the dof is owned by the local processor
           if (first_local <= dof && dof < end_local)
             var_indices.insert(dof_indices[i]);
         }
     }
 
   // we may have missed assigning DOFs to nodes that we own
   // but to which we have no connected elements matching our
   // variable restriction criterion.  this will happen, for example,
   // if variable V is restricted to subdomain S.  We may not own
   // any elements which live in S, but we may own nodes which are
   // *connected* to elements which do.
   for (const auto & node : this->get_mesh().local_node_ptr_range())
     {
       libmesh_assert(node);
       this->get_dof_map().dof_indices (node, dof_indices, var);
       for (auto dof : dof_indices)
         if (first_local <= dof && dof < end_local)
           var_indices.insert(dof);
     }
 }

◆ n_active_dofs()

dof_id_type libMesh::System::n_active_dofs ( ) const

inlineinherited

Returns: The number of active degrees of freedom for this System.

Definition at line 2217 of file system.h.

References libMesh::System::n_constrained_dofs(), and libMesh::System::n_dofs().

 {
   return this->n_dofs() - this->n_constrained_dofs();
 }

◆ n_components()

unsigned int libMesh::System::n_components ( ) const

inlineinherited

Returns: The total number of scalar components in the system's variables. This will equal n_vars() in the case of all scalar-valued variables.

Definition at line 2121 of file system.h.

References libMesh::System::_variables, libMesh::Variable::first_scalar_number(), and libMesh::Variable::n_components().

Referenced by libMesh::System::add_variables().

 {
   if (_variables.empty())
     return 0;
 
   const Variable & last = _variables.back();
   return last.first_scalar_number() + last.n_components();
 }

◆ n_constrained_dofs()

dof_id_type libMesh::System::n_constrained_dofs ( ) const

inherited

Returns: The total number of constrained degrees of freedom in the system.

Definition at line 157 of file system.C.

References libMesh::System::_dof_map.

Referenced by libMesh::System::get_info(), and libMesh::System::n_active_dofs().

 {
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
 
   return _dof_map->n_constrained_dofs();
 
 #else
 
   return 0;
 
 #endif
 }

◆ n_dofs()

dof_id_type libMesh::System::n_dofs ( ) const

inherited

Returns: The number of degrees of freedom in the system

Definition at line 150 of file system.C.

References libMesh::System::_dof_map.

Referenced by libMesh::System::add_vector(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::System::get_info(), libMesh::SecondOrderUnsteadySolver::init_data(), libMesh::UnsteadySolver::init_data(), libMesh::System::init_data(), libMesh::OptimizationSystem::initialize_equality_constraints_storage(), libMesh::OptimizationSystem::initialize_inequality_constraints_storage(), libMesh::System::n_active_dofs(), libMesh::CondensedEigenSystem::n_global_non_condensed_dofs(), libMesh::FEMSystem::numerical_jacobian(), libMesh::System::read_legacy_data(), libMesh::SecondOrderUnsteadySolver::reinit(), libMesh::UnsteadySolver::reinit(), and libMesh::System::restrict_vectors().

 {
   return _dof_map->n_dofs();
 }

◆ n_linear_iterations()

unsigned int libMesh::LinearImplicitSystem::n_linear_iterations ( ) const

inlineinherited

Returns: The number of iterations taken for the most recent linear solve.

Definition at line 164 of file linear_implicit_system.h.

References libMesh::LinearImplicitSystem::_n_linear_iterations.

164 { return _n_linear_iterations; }

libMesh::LinearImplicitSystem::_n_linear_iterations

unsigned int _n_linear_iterations

Definition: linear_implicit_system.h:199

◆ n_local_constrained_dofs()

dof_id_type libMesh::System::n_local_constrained_dofs ( ) const

inherited

Returns: The number of constrained degrees of freedom on this processor.

Definition at line 172 of file system.C.

References libMesh::System::_dof_map.

Referenced by libMesh::System::get_info().

 {
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
 
   return _dof_map->n_local_constrained_dofs();
 
 #else
 
   return 0;
 
 #endif
 }

◆ n_local_dofs()

dof_id_type libMesh::System::n_local_dofs ( ) const

inherited

Returns: The number of degrees of freedom local to this processor

Definition at line 187 of file system.C.

References libMesh::System::_dof_map, and libMesh::ParallelObject::processor_id().

Referenced by libMesh::System::add_vector(), libMesh::PetscDMWrapper::build_section(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::System::get_info(), libMesh::SecondOrderUnsteadySolver::init_data(), libMesh::UnsteadySolver::init_data(), libMesh::System::init_data(), libMesh::OptimizationSystem::initialize_equality_constraints_storage(), libMesh::OptimizationSystem::initialize_inequality_constraints_storage(), libMesh::SecondOrderUnsteadySolver::reinit(), libMesh::UnsteadySolver::reinit(), and libMesh::System::restrict_vectors().

 {
   return _dof_map->n_dofs_on_processor (this->processor_id());
 }

◆ n_matrices()

unsigned int libMesh::ImplicitSystem::n_matrices ( ) const

inlineoverridevirtualinherited

Returns: The number of matrices handled by this system

Reimplemented from libMesh::System.

Definition at line 426 of file implicit_system.h.

References libMesh::ImplicitSystem::_matrices.

 {
   return cast_int<unsigned int>(_matrices.size());
 }

◆ n_objects() [1/2]

static unsigned int libMesh::ReferenceCounter::n_objects ( )

inlinestaticinherited

Prints the number of outstanding (created, but not yet destroyed) objects.

Definition at line 83 of file reference_counter.h.

References libMesh::ReferenceCounter::_n_objects.

84 { return _n_objects; }

libMesh::ReferenceCounter::_n_objects

static Threads::atomic< unsigned int > _n_objects

Definition: reference_counter.h:130

◆ n_objects() [2/2]

static unsigned int libMesh::ReferenceCounter::n_objects ( )

inlinestaticinherited

Prints the number of outstanding (created, but not yet destroyed) objects.

Definition at line 83 of file reference_counter.h.

References libMesh::ReferenceCounter::_n_objects.

84 { return _n_objects; }

libMesh::ReferenceCounter::_n_objects

static Threads::atomic< unsigned int > _n_objects

Definition: reference_counter.h:130

◆ n_processors()

processor_id_type libMesh::ParallelObject::n_processors ( ) const

inlineinherited

Returns: The number of processors in the group.

Definition at line 95 of file parallel_object.h.

References libMesh::ParallelObject::_communicator, and libMesh::Parallel::Communicator::size().

96 { return cast_int<processor_id_type>(_communicator.size()); }

libMesh::Parallel::Communicator::size

processor_id_type size() const

Definition: communicator.h:175

libMesh::ParallelObject::_communicator

const Parallel::Communicator & _communicator

Definition: parallel_object.h:107

◆ n_qois()

unsigned int libMesh::System::n_qois ( ) const

inlineinherited

Number of currently active quantities of interest.

Definition at line 2278 of file system.h.

References libMesh::System::qoi.

Referenced by libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::ImplicitSystem::adjoint_qoi_parameter_sensitivity(), libMesh::ImplicitSystem::adjoint_solve(), libMesh::SensitivityData::allocate_data(), libMesh::SensitivityData::allocate_hessian_data(), libMesh::ExplicitSystem::assemble_qoi(), libMesh::FEMSystem::assemble_qoi(), libMesh::ExplicitSystem::assemble_qoi_derivative(), libMesh::FEMSystem::assemble_qoi_derivative(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::AdjointResidualErrorEstimator::estimate_error(), libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity(), libMesh::FEMContext::pre_fe_reinit(), libMesh::ImplicitSystem::qoi_parameter_hessian(), libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product(), libMesh::QoISet::size(), and libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve().

 {
   return cast_int<unsigned int>(this->qoi.size());
 }

◆ n_variable_groups()

unsigned int libMesh::System::n_variable_groups ( ) const

inlineinherited

Returns: The number of VariableGroup variable groups in the system

Definition at line 2113 of file system.h.

References libMesh::System::_variable_groups.

Referenced by libMesh::System::add_variable(), libMesh::FEMSystem::assembly(), libMesh::System::get_info(), and libMesh::System::init_data().

 {
   return cast_int<unsigned int>(_variable_groups.size());
 }

◆ n_vars()

unsigned int libMesh::System::n_vars ( ) const

inlineinherited

Returns: The number of variables in the system

Definition at line 2105 of file system.h.

References libMesh::System::_variables.

 {
   return cast_int<unsigned int>(_variables.size());
 }

◆ n_vectors()

unsigned int libMesh::System::n_vectors ( ) const

inlineinherited

Returns: The number of vectors (in addition to the solution) handled by this system This is the size of the _vectors map

Definition at line 2233 of file system.h.

References libMesh::System::_vectors.

Referenced by libMesh::ExplicitSystem::add_system_rhs(), libMesh::System::compare(), libMesh::System::get_info(), and libMesh::System::write_header().

 {
   return cast_int<unsigned int>(_vectors.size());
 }

◆ name()

const std::string & libMesh::System::name ( ) const

inlineinherited

Returns: The system name.

Definition at line 2017 of file system.h.

References libMesh::System::_sys_name.

Referenced by libMesh::System::compare(), libMesh::ContinuationSystem::ContinuationSystem(), DMlibMeshSetUpName_Private(), libMesh::ExactErrorEstimator::estimate_error(), libMesh::ExactSolution::ExactSolution(), libMesh::ExactErrorEstimator::find_squared_element_error(), libMesh::System::get_info(), libMesh::ImplicitSystem::get_linear_solver(), libMesh::NewtonSolver::init(), libMesh::TimeSolver::init_data(), libMesh::petsc_auto_fieldsplit(), libMesh::TimeSolver::reinit(), libMesh::PetscDiffSolver::setup_petsc_data(), libMesh::FrequencySystem::solve(), libMesh::LinearImplicitSystem::solve(), libMesh::NonlinearImplicitSystem::solve(), libMesh::System::user_assembly(), libMesh::System::user_constrain(), libMesh::System::user_initialization(), libMesh::System::user_QOI(), libMesh::System::user_QOI_derivative(), libMesh::System::write_header(), libMesh::System::write_parallel_data(), and libMesh::System::write_serialized_data().

 {
   return _sys_name;
 }

◆ number()

unsigned int libMesh::System::number ( ) const

inlineinherited

Returns: The system number.

Definition at line 2025 of file system.h.

References libMesh::System::_sys_number.

Referenced by libMesh::ExactSolution::_compute_error(), libMesh::PetscDMWrapper::add_dofs_helper(), libMesh::System::add_variable(), libMesh::System::add_variables(), libMesh::EquationSystems::build_parallel_solution_vector(), libMesh::ExodusII_IO::copy_elemental_solution(), libMesh::ExodusII_IO::copy_nodal_solution(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::ExactErrorEstimator::find_squared_element_error(), libMesh::System::get_info(), libMesh::System::read_legacy_data(), libMesh::System::read_parallel_data(), libMesh::System::read_serialized_blocked_dof_objects(), libMesh::HPCoarsenTest::select_refinement(), libMesh::PetscDMWrapper::set_point_range_in_section(), libMesh::System::write_parallel_data(), libMesh::System::write_serialized_blocked_dof_objects(), and libMesh::System::zero_variable().

 {
   return _sys_number;
 }

◆ point_gradient() [1/3]

Gradient libMesh::System::point_gradient	(	unsigned int	var,
		const Point &	p,
		const bool	insist_on_success = `true`
	)		const

inherited

Returns: The gradient of the solution variable var at the physical point p in the mesh, similarly to point_value.

Definition at line 2100 of file system.C.

References libMesh::Parallel::Communicator::broadcast(), libMesh::ParallelObject::comm(), libMesh::PointLocatorBase::enable_out_of_mesh_mode(), libMesh::System::get_dof_map(), libMesh::System::get_mesh(), mesh, libMesh::Parallel::Communicator::min(), libMesh::ParallelObject::n_processors(), libMesh::ParallelObject::processor_id(), and libMesh::DofObject::processor_id().

Referenced by libMesh::System::point_gradient().

 {
   // This function must be called on every processor; there's no
   // telling where in the partition p falls.
   parallel_object_only();
 
   // And every processor had better agree about which point we're
   // looking for
 #ifndef NDEBUG
   libmesh_assert(this->comm().verify(p(0)));
 #if LIBMESH_DIM > 1
   libmesh_assert(this->comm().verify(p(1)));
 #endif
 #if LIBMESH_DIM > 2
   libmesh_assert(this->comm().verify(p(2)));
 #endif
 #endif // NDEBUG
 
   // Get a reference to the mesh object associated with the system object that calls this function
   const MeshBase & mesh = this->get_mesh();
 
   // Use an existing PointLocator or create a new one
   std::unique_ptr<PointLocatorBase> locator_ptr = mesh.sub_point_locator();
   PointLocatorBase & locator = *locator_ptr;
 
   if (!insist_on_success || !mesh.is_serial())
     locator.enable_out_of_mesh_mode();
 
   // Get a pointer to the element that contains P
   const Elem * e = locator(p);
 
   Gradient grad_u;
 
   if (e && this->get_dof_map().is_evaluable(*e, var))
     grad_u = point_gradient(var, p, *e);
 
   // If I have an element containing p, then let's let everyone know
   processor_id_type lowest_owner =
     (e && (e->processor_id() == this->processor_id())) ?
     this->processor_id() : this->n_processors();
   this->comm().min(lowest_owner);
 
   // Everybody should get their value from a processor that was able
   // to compute it.
   // If nobody admits owning the point, we may have a problem.
   if (lowest_owner != this->n_processors())
     this->comm().broadcast(grad_u, lowest_owner);
   else
     libmesh_assert(!insist_on_success);
 
   return grad_u;
 }

◆ point_gradient() [2/3]

Gradient libMesh::System::point_gradient	(	unsigned int	var,
		const Point &	p,
		const Elem &	e
	)		const

inherited

Returns: The gradient of the solution variable var at the physical point p in local Elem e in the mesh, similarly to point_value.

Definition at line 2154 of file system.C.

References libMesh::TypeVector< T >::add_scaled(), libMesh::FEGenericBase< OutputType >::build(), libMesh::Elem::contains_point(), libMesh::System::current_solution(), libMesh::Elem::dim(), libMesh::DofMap::dof_indices(), libMesh::System::get_dof_map(), libMesh::Elem::infinite(), libMesh::FEInterface::inverse_map(), libMesh::DofMap::is_evaluable(), and libMesh::DofMap::variable_type().

 {
   // Ensuring that the given point is really in the element is an
   // expensive assert, but as long as debugging is turned on we might
   // as well try to catch a particularly nasty potential error
   libmesh_assert (e.contains_point(p));
 
 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
   if (e.infinite())
     libmesh_not_implemented();
 #endif
 
   // Get the dof map to get the proper indices for our computation
   const DofMap & dof_map = this->get_dof_map();
 
   // Make sure we can evaluate on this element.
   libmesh_assert (dof_map.is_evaluable(e, var));
 
   // Need dof_indices for phi[i][j]
   std::vector<dof_id_type> dof_indices;
 
   // Fill in the dof_indices for our element
   dof_map.dof_indices (&e, dof_indices, var);
 
   // Get the no of dofs associated with this point
   const unsigned int num_dofs = cast_int<unsigned int>
     (dof_indices.size());
 
   FEType fe_type = dof_map.variable_type(var);
 
   // Build a FE again so we can calculate u(p)
   std::unique_ptr<FEBase> fe (FEBase::build(e.dim(), fe_type));
 
   // Map the physical co-ordinates to the master co-ordinates using the inverse_map from fe_interface.h
   // Build a vector of point co-ordinates to send to reinit
   std::vector<Point> coor(1, FEInterface::inverse_map(e.dim(), fe_type, &e, p));
 
   // Get the values of the shape function derivatives
   const std::vector<std::vector<RealGradient>> &  dphi = fe->get_dphi();
 
   // Reinitialize the element and compute the shape function values at coor
   fe->reinit (&e, &coor);
 
   // Get ready to accumulate a gradient
   Gradient grad_u;
 
   for (unsigned int l=0; l<num_dofs; l++)
     {
       grad_u.add_scaled (dphi[l][0], this->current_solution (dof_indices[l]));
     }
 
   return grad_u;
 }

◆ point_gradient() [3/3]

Gradient libMesh::System::point_gradient	(	unsigned int	var,
		const Point &	p,
		const Elem *	e
	)		const

inherited

Calls the version of point_gradient() which takes a reference. This function exists only to prevent people from calling the version of point_gradient() that has a boolean third argument, which would result in unnecessary PointLocator calls.

Definition at line 2210 of file system.C.

References libMesh::System::point_gradient().

 {
   libmesh_assert(e);
   return this->point_gradient(var, p, *e);
 }

◆ point_hessian() [1/3]

Tensor libMesh::System::point_hessian	(	unsigned int	var,
		const Point &	p,
		const bool	insist_on_success = `true`
	)		const

inherited

Returns: The second derivative tensor of the solution variable var at the physical point p in the mesh, similarly to point_value.

Definition at line 2220 of file system.C.

References libMesh::Parallel::Communicator::broadcast(), libMesh::ParallelObject::comm(), libMesh::PointLocatorBase::enable_out_of_mesh_mode(), libMesh::System::get_dof_map(), libMesh::System::get_mesh(), mesh, libMesh::Parallel::Communicator::min(), libMesh::ParallelObject::n_processors(), libMesh::ParallelObject::processor_id(), and libMesh::DofObject::processor_id().

Referenced by libMesh::System::point_hessian().

 {
   // This function must be called on every processor; there's no
   // telling where in the partition p falls.
   parallel_object_only();
 
   // And every processor had better agree about which point we're
   // looking for
 #ifndef NDEBUG
   libmesh_assert(this->comm().verify(p(0)));
 #if LIBMESH_DIM > 1
   libmesh_assert(this->comm().verify(p(1)));
 #endif
 #if LIBMESH_DIM > 2
   libmesh_assert(this->comm().verify(p(2)));
 #endif
 #endif // NDEBUG
 
   // Get a reference to the mesh object associated with the system object that calls this function
   const MeshBase & mesh = this->get_mesh();
 
   // Use an existing PointLocator or create a new one
   std::unique_ptr<PointLocatorBase> locator_ptr = mesh.sub_point_locator();
   PointLocatorBase & locator = *locator_ptr;
 
   if (!insist_on_success || !mesh.is_serial())
     locator.enable_out_of_mesh_mode();
 
   // Get a pointer to the element that contains P
   const Elem * e = locator(p);
 
   Tensor hess_u;
 
   if (e && this->get_dof_map().is_evaluable(*e, var))
     hess_u = point_hessian(var, p, *e);
 
   // If I have an element containing p, then let's let everyone know
   processor_id_type lowest_owner =
     (e && (e->processor_id() == this->processor_id())) ?
     this->processor_id() : this->n_processors();
   this->comm().min(lowest_owner);
 
   // Everybody should get their value from a processor that was able
   // to compute it.
   // If nobody admits owning the point, we may have a problem.
   if (lowest_owner != this->n_processors())
     this->comm().broadcast(hess_u, lowest_owner);
   else
     libmesh_assert(!insist_on_success);
 
   return hess_u;
 }

◆ point_hessian() [2/3]

Tensor libMesh::System::point_hessian	(	unsigned int	var,
		const Point &	p,
		const Elem &	e
	)		const

inherited

Returns: The second derivative tensor of the solution variable var at the physical point p in local Elem e in the mesh, similarly to point_value.

Definition at line 2273 of file system.C.

References libMesh::TypeTensor< T >::add_scaled(), libMesh::FEGenericBase< OutputType >::build(), libMesh::Elem::contains_point(), libMesh::System::current_solution(), libMesh::Elem::dim(), libMesh::DofMap::dof_indices(), libMesh::System::get_dof_map(), libMesh::Elem::infinite(), libMesh::FEInterface::inverse_map(), libMesh::DofMap::is_evaluable(), and libMesh::DofMap::variable_type().

 {
   // Ensuring that the given point is really in the element is an
   // expensive assert, but as long as debugging is turned on we might
   // as well try to catch a particularly nasty potential error
   libmesh_assert (e.contains_point(p));
 
 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
   if (e.infinite())
     libmesh_not_implemented();
 #endif
 
   // Get the dof map to get the proper indices for our computation
   const DofMap & dof_map = this->get_dof_map();
 
   // Make sure we can evaluate on this element.
   libmesh_assert (dof_map.is_evaluable(e, var));
 
   // Need dof_indices for phi[i][j]
   std::vector<dof_id_type> dof_indices;
 
   // Fill in the dof_indices for our element
   dof_map.dof_indices (&e, dof_indices, var);
 
   // Get the no of dofs associated with this point
   const unsigned int num_dofs = cast_int<unsigned int>
     (dof_indices.size());
 
   FEType fe_type = dof_map.variable_type(var);
 
   // Build a FE again so we can calculate u(p)
   std::unique_ptr<FEBase> fe (FEBase::build(e.dim(), fe_type));
 
   // Map the physical co-ordinates to the master co-ordinates using the inverse_map from fe_interface.h
   // Build a vector of point co-ordinates to send to reinit
   std::vector<Point> coor(1, FEInterface::inverse_map(e.dim(), fe_type, &e, p));
 
   // Get the values of the shape function derivatives
   const std::vector<std::vector<RealTensor>> &  d2phi = fe->get_d2phi();
 
   // Reinitialize the element and compute the shape function values at coor
   fe->reinit (&e, &coor);
 
   // Get ready to accumulate a hessian
   Tensor hess_u;
 
   for (unsigned int l=0; l<num_dofs; l++)
     {
       hess_u.add_scaled (d2phi[l][0], this->current_solution (dof_indices[l]));
     }
 
   return hess_u;
 }

◆ point_hessian() [3/3]

Tensor libMesh::System::point_hessian	(	unsigned int	var,
		const Point &	p,
		const Elem *	e
	)		const

inherited

Calls the version of point_hessian() which takes a reference. This function exists only to prevent people from calling the version of point_hessian() that has a boolean third argument, which would result in unnecessary PointLocator calls.

Definition at line 2329 of file system.C.

References libMesh::System::point_hessian().

 {
   libmesh_assert(e);
   return this->point_hessian(var, p, *e);
 }

◆ point_value() [1/3]

Number libMesh::System::point_value	(	unsigned int	var,
		const Point &	p,
		const bool	insist_on_success = `true`
	)		const

inherited

Returns: The value of the solution variable var at the physical point p in the mesh, without knowing a priori which element contains p.

Note: This function uses MeshBase::sub_point_locator(); users may or may not want to call MeshBase::clear_point_locator() afterward. Also, point_locator() is expensive (N log N for initial construction, log N for evaluations). Avoid using this function in any context where you are already looping over elements.

Because the element containing p may lie on any processor, this function is parallel-only.

By default this method expects the point to reside inside the domain and will abort if no element can be found which contains p. The optional parameter insist_on_success can be set to false to allow the method to return 0 when the point is not located.

Definition at line 1993 of file system.C.

References libMesh::Parallel::Communicator::broadcast(), libMesh::ParallelObject::comm(), libMesh::PointLocatorBase::enable_out_of_mesh_mode(), libMesh::System::get_dof_map(), libMesh::System::get_mesh(), mesh, libMesh::Parallel::Communicator::min(), libMesh::ParallelObject::n_processors(), libMesh::ParallelObject::processor_id(), and libMesh::DofObject::processor_id().

Referenced by libMesh::System::point_value().

 {
   // This function must be called on every processor; there's no
   // telling where in the partition p falls.
   parallel_object_only();
 
   // And every processor had better agree about which point we're
   // looking for
 #ifndef NDEBUG
   libmesh_assert(this->comm().verify(p(0)));
 #if LIBMESH_DIM > 1
   libmesh_assert(this->comm().verify(p(1)));
 #endif
 #if LIBMESH_DIM > 2
   libmesh_assert(this->comm().verify(p(2)));
 #endif
 #endif // NDEBUG
 
   // Get a reference to the mesh object associated with the system object that calls this function
   const MeshBase & mesh = this->get_mesh();
 
   // Use an existing PointLocator or create a new one
   std::unique_ptr<PointLocatorBase> locator_ptr = mesh.sub_point_locator();
   PointLocatorBase & locator = *locator_ptr;
 
   if (!insist_on_success || !mesh.is_serial())
     locator.enable_out_of_mesh_mode();
 
   // Get a pointer to the element that contains P
   const Elem * e = locator(p);
 
   Number u = 0;
 
   if (e && this->get_dof_map().is_evaluable(*e, var))
     u = point_value(var, p, *e);
 
   // If I have an element containing p, then let's let everyone know
   processor_id_type lowest_owner =
     (e && (e->processor_id() == this->processor_id())) ?
     this->processor_id() : this->n_processors();
   this->comm().min(lowest_owner);
 
   // Everybody should get their value from a processor that was able
   // to compute it.
   // If nobody admits owning the point, we have a problem.
   if (lowest_owner != this->n_processors())
     this->comm().broadcast(u, lowest_owner);
   else
     libmesh_assert(!insist_on_success);
 
   return u;
 }

◆ point_value() [2/3]

Number libMesh::System::point_value	(	unsigned int	var,
		const Point &	p,
		const Elem &	e
	)		const

inherited

Returns: The value of the solution variable var at the physical point p contained in local Elem e

This version of point_value can be run in serial, but assumes e is in the local mesh partition or is algebraically ghosted.

Definition at line 2046 of file system.C.

References libMesh::FEInterface::compute_data(), libMesh::Elem::contains_point(), libMesh::System::current_solution(), libMesh::Elem::dim(), libMesh::System::get_dof_map(), libMesh::System::get_equation_systems(), and libMesh::FEInterface::inverse_map().

 {
   // Ensuring that the given point is really in the element is an
   // expensive assert, but as long as debugging is turned on we might
   // as well try to catch a particularly nasty potential error
   libmesh_assert (e.contains_point(p));
 
   // Get the dof map to get the proper indices for our computation
   const DofMap & dof_map = this->get_dof_map();
 
   // Make sure we can evaluate on this element.
   libmesh_assert (dof_map.is_evaluable(e, var));
 
   // Need dof_indices for phi[i][j]
   std::vector<dof_id_type> dof_indices;
 
   // Fill in the dof_indices for our element
   dof_map.dof_indices (&e, dof_indices, var);
 
   // Get the no of dofs associated with this point
   const unsigned int num_dofs = cast_int<unsigned int>
     (dof_indices.size());
 
   FEType fe_type = dof_map.variable_type(var);
 
   // Map the physical co-ordinates to the master co-ordinates using the inverse_map from fe_interface.h.
   Point coor = FEInterface::inverse_map(e.dim(), fe_type, &e, p);
 
   // get the shape function value via the FEInterface to also handle the case
   // of infinite elements correcly, the shape function is not fe->phi().
   FEComputeData fe_data(this->get_equation_systems(), coor);
   FEInterface::compute_data(e.dim(), fe_type, &e, fe_data);
 
   // Get ready to accumulate a value
   Number u = 0;
 
   for (unsigned int l=0; l<num_dofs; l++)
     {
       u += fe_data.shape[l]*this->current_solution (dof_indices[l]);
     }
 
   return u;
 }

◆ point_value() [3/3]

Number libMesh::System::point_value	(	unsigned int	var,
		const Point &	p,
		const Elem *	e
	)		const

inherited

Calls the version of point_value() which takes a reference. This function exists only to prevent people from calling the version of point_value() that has a boolean third argument, which would result in unnecessary PointLocator calls.

Definition at line 2092 of file system.C.

References libMesh::System::point_value().

 {
   libmesh_assert(e);
   return this->point_value(var, p, *e);
 }

◆ print_basis_function_orthogonality()

void libMesh::RBConstruction::print_basis_function_orthogonality ( )

Print out a matrix that shows the orthogonality of the RB basis functions. This is a helpful debugging tool, e.g. orthogonality can be degraded due to finite precision arithmetic.

◆ print_discrete_parameter_values()

void libMesh::RBParametrized::print_discrete_parameter_values ( ) const

inherited

Print out all the discrete parameter values.

◆ print_info() [1/3]

void libMesh::ReferenceCounter::print_info ( std::ostream & out = libMesh::out )

staticinherited

Prints the reference information, by default to libMesh::out.

Definition at line 87 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter, and libMesh::ReferenceCounter::get_info().

 {
   if (_enable_print_counter)
     out_stream << ReferenceCounter::get_info();
 }

◆ print_info() [2/3]

void libMesh::ReferenceCounter::print_info ( std::ostream & out = libMesh::out )

staticinherited

Prints the reference information, by default to libMesh::out.

Definition at line 87 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter, and libMesh::ReferenceCounter::get_info().

 {
   if (_enable_print_counter)
     out_stream << ReferenceCounter::get_info();
 }

◆ print_info() [3/3]

virtual void libMesh::RBConstruction::print_info ( )

virtual

Print out info that describes the current setup of this RBConstruction.

Reimplemented in libMesh::TransientRBConstruction, and libMesh::RBEIMConstruction.

◆ print_parameters()

void libMesh::RBParametrized::print_parameters ( ) const

inherited

Print the current parameters.

◆ process_parameters_file()

virtual void libMesh::RBConstruction::process_parameters_file ( const std::string & parameters_filename )

virtual

Read in from the file specified by parameters_filename and set the this system's member variables accordingly.

Reimplemented in libMesh::TransientRBConstruction, and libMesh::RBEIMConstruction.

◆ processor_id()

processor_id_type libMesh::ParallelObject::processor_id ( ) const

inlineinherited

Returns: The rank of this processor in the group.

Definition at line 101 of file parallel_object.h.

References libMesh::ParallelObject::_communicator, and libMesh::Parallel::Communicator::rank().

102 { return cast_int<processor_id_type>(_communicator.rank()); }

libMesh::ParallelObject::_communicator

const Parallel::Communicator & _communicator

Definition: parallel_object.h:107

libMesh::Parallel::Communicator::rank

processor_id_type rank() const

Definition: communicator.h:173

◆ project_solution() [1/3]

void libMesh::System::project_solution	(	FunctionBase< Number > *	f,
		FunctionBase< Gradient > *	g = `nullptr`
	)		const

inherited

Projects arbitrary functions onto the current solution. The function value f and its gradient g are user-provided cloneable functors. A gradient g is only required/used for projecting onto finite element spaces with continuous derivatives. If non-default Parameters are to be used, they can be provided in the parameters argument.

This method projects an arbitrary function onto the solution via L2 projections and nodal interpolations on each element.

Definition at line 810 of file system_projection.C.

 {
   this->project_vector(*solution, f, g);
 
   solution->localize(*current_local_solution, _dof_map->get_send_list());
 }

◆ project_solution() [2/3]

void libMesh::System::project_solution	(	FEMFunctionBase< Number > *	f,
		FEMFunctionBase< Gradient > *	g = `nullptr`
	)		const

inherited

Projects arbitrary functions onto the current solution. The function value f and its gradient g are user-provided cloneable functors. A gradient g is only required/used for projecting onto finite element spaces with continuous derivatives. If non-default Parameters are to be used, they can be provided in the parameters argument.

This method projects an arbitrary function onto the solution via L2 projections and nodal interpolations on each element.

Definition at line 823 of file system_projection.C.

 {
   this->project_vector(*solution, f, g);
 
   solution->localize(*current_local_solution, _dof_map->get_send_list());
 }

◆ project_solution() [3/3]

void libMesh::System::project_solution	(	ValueFunctionPointer	fptr,
		GradientFunctionPointer	gptr,
		const Parameters &	parameters
	)		const

inherited

This method projects an arbitrary function onto the solution via L2 projections and nodal interpolations on each element.

Definition at line 796 of file system_projection.C.

 {
   WrappedFunction<Number> f(*this, fptr, &parameters);
   WrappedFunction<Gradient> g(*this, gptr, &parameters);
   this->project_solution(&f, &g);
 }

◆ project_solution_on_reinit()

bool& libMesh::System::project_solution_on_reinit ( void )

inlineinherited

Tells the System whether or not to project the solution vector onto new grids when the system is reinitialized. The solution will be projected unless project_solution_on_reinit() = false is called.

Definition at line 794 of file system.h.

References libMesh::System::_solution_projection.

Referenced by libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::AdjointRefinementEstimator::estimate_error(), and libMesh::MemorySolutionHistory::store().

795 { return _solution_projection; }

libMesh::System::_solution_projection

bool _solution_projection

Definition: system.h:1959

◆ project_vector() [1/5]

void libMesh::System::project_vector	(	NumericVector< Number > &	new_vector,
		FunctionBase< Number > *	f,
		FunctionBase< Gradient > *	g = `nullptr`,
		int	is_adjoint = `-1`
	)		const

inherited

Projects arbitrary functions onto a vector of degree of freedom values for the current system. The function value f and its gradient g are user-provided cloneable functors. A gradient g is only required/used for projecting onto finite element spaces with continuous derivatives. If non-default Parameters are to be used, they can be provided in the parameters argument.

Constrain the new vector using the requested adjoint rather than primal constraints if is_adjoint is non-negative.

This method projects an arbitrary function via L2 projections and nodal interpolations on each element.

Definition at line 851 of file system_projection.C.

Referenced by libMesh::NewmarkSolver::project_initial_accel(), libMesh::SecondOrderUnsteadySolver::project_initial_rate(), and libMesh::System::restrict_vectors().

 {
   LOG_SCOPE ("project_vector(FunctionBase)", "System");
 
   libmesh_assert(f);
 
   WrappedFunctor<Number> f_fem(*f);
 
   if (g)
     {
       WrappedFunctor<Gradient> g_fem(*g);
 
       this->project_vector(new_vector, &f_fem, &g_fem, is_adjoint);
     }
   else
     this->project_vector(new_vector, &f_fem, nullptr, is_adjoint);
 }

◆ project_vector() [2/5]

void libMesh::System::project_vector	(	NumericVector< Number > &	new_vector,
		FEMFunctionBase< Number > *	f,
		FEMFunctionBase< Gradient > *	g = `nullptr`,
		int	is_adjoint = `-1`
	)		const

inherited

Projects arbitrary functions onto a vector of degree of freedom values for the current system. The function value f and its gradient g are user-provided cloneable functors. A gradient g is only required/used for projecting onto finite element spaces with continuous derivatives. If non-default Parameters are to be used, they can be provided in the parameters argument.

Constrain the new vector using the requested adjoint rather than primal constraints if is_adjoint is non-negative.

This method projects an arbitrary function via L2 projections and nodal interpolations on each element.

Definition at line 877 of file system_projection.C.

References libMesh::NumericVector< T >::close(), libMesh::FEMFunctionBase< Output >::component(), libMesh::Utility::iota(), n_vars, libMesh::Threads::parallel_for(), libMesh::FEMContext::pre_fe_reinit(), libMesh::SCALAR, libMesh::DofMap::SCALAR_dof_indices(), and libMesh::NumericVector< T >::set().

 {
   LOG_SCOPE ("project_fem_vector()", "System");
 
   libmesh_assert (f);
 
   ConstElemRange active_local_range
     (this->get_mesh().active_local_elements_begin(),
      this->get_mesh().active_local_elements_end() );
 
   VectorSetAction<Number> setter(new_vector);
 
   const unsigned int n_variables = this->n_vars();
 
   std::vector<unsigned int> vars(n_variables);
   std::iota(vars.begin(), vars.end(), 0);
 
   // Use a typedef to make the calling sequence for parallel_for() a bit more readable
   typedef
     GenericProjector<FEMFunctionWrapper<Number>, FEMFunctionWrapper<Gradient>,
                      Number, VectorSetAction<Number>> FEMProjector;
 
   FEMFunctionWrapper<Number> fw(*f);
 
   if (g)
     {
       FEMFunctionWrapper<Gradient> gw(*g);
 
       Threads::parallel_for
         (active_local_range,
          FEMProjector(*this, fw, &gw, setter, vars));
     }
   else
     Threads::parallel_for
       (active_local_range,
        FEMProjector(*this, fw, nullptr, setter, vars));
 
   // Also, load values into the SCALAR dofs
   // Note: We assume that all SCALAR dofs are on the
   // processor with highest ID
   if (this->processor_id() == (this->n_processors()-1))
     {
       // FIXME: Do we want to first check for SCALAR vars before building this? [PB]
       FEMContext context( *this );
 
       const DofMap & dof_map = this->get_dof_map();
       for (unsigned int var=0; var<this->n_vars(); var++)
         if (this->variable(var).type().family == SCALAR)
           {
             // FIXME: We reinit with an arbitrary element in case the user
             //        doesn't override FEMFunctionBase::component. Is there
             //        any use case we're missing? [PB]
             Elem * el = const_cast<Elem *>(*(this->get_mesh().active_local_elements_begin()));
             context.pre_fe_reinit(*this, el);
 
             std::vector<dof_id_type> SCALAR_indices;
             dof_map.SCALAR_dof_indices (SCALAR_indices, var);
             const unsigned int n_SCALAR_dofs =
               cast_int<unsigned int>(SCALAR_indices.size());
 
             for (unsigned int i=0; i<n_SCALAR_dofs; i++)
               {
                 const dof_id_type global_index = SCALAR_indices[i];
                 const unsigned int component_index =
                   this->variable_scalar_number(var,i);
 
                 new_vector.set(global_index, f->component(context, component_index, Point(), this->time));
               }
           }
     }
 
   new_vector.close();
 
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
   if (is_adjoint == -1)
     this->get_dof_map().enforce_constraints_exactly(*this, &new_vector);
   else if (is_adjoint >= 0)
     this->get_dof_map().enforce_adjoint_constraints_exactly(new_vector,
                                                             is_adjoint);
 #endif
 }

◆ project_vector() [3/5]

void libMesh::System::project_vector	(	ValueFunctionPointer	fptr,
		GradientFunctionPointer	gptr,
		const Parameters &	parameters,
		NumericVector< Number > &	new_vector,
		int	is_adjoint = `-1`
	)		const

inherited

Projects arbitrary functions onto a vector of degree of freedom values for the current system. The function value fptr and its gradient gptr are represented by function pointers. A gradient gptr is only required/used for projecting onto finite element spaces with continuous derivatives.

Constrain the new vector using the requested adjoint rather than primal constraints if is_adjoint is non-negative.

This method projects an arbitrary function via L2 projections and nodal interpolations on each element.

Definition at line 836 of file system_projection.C.

 {
   WrappedFunction<Number> f(*this, fptr, &parameters);
   WrappedFunction<Gradient> g(*this, gptr, &parameters);
   this->project_vector(new_vector, &f, &g, is_adjoint);
 }

◆ project_vector() [4/5]

void libMesh::System::project_vector	(	NumericVector< Number > &	vector,
		int	is_adjoint = `-1`
	)		const

protectedinherited

Projects the vector defined on the old mesh onto the new mesh.

Constrain the new vector using the requested adjoint rather than primal constraints if is_adjoint is non-negative.

Definition at line 212 of file system_projection.C.

References libMesh::NumericVector< T >::clone().

 {
   // Create a copy of the vector, which currently
   // contains the old data.
   std::unique_ptr<NumericVector<Number>>
     old_vector (vector.clone());
 
   // Project the old vector to the new vector
   this->project_vector (*old_vector, vector, is_adjoint);
 }

◆ project_vector() [5/5]

void libMesh::System::project_vector	(	const NumericVector< Number > &	,
		NumericVector< Number > &	,
		int	is_adjoint = `-1`
	)		const

protectedinherited

Projects the vector defined on the old mesh onto the new mesh. The original vector is unchanged and the new vector is passed through the second argument.

Constrain the new vector using the requested adjoint rather than primal constraints if is_adjoint is non-negative.

◆ projection_matrix()

void libMesh::System::projection_matrix ( SparseMatrix< Number > & proj_mat ) const

inherited

This method creates a projection matrix which corresponds to the operation of project_vector between old and new solution spaces.

Heterogeneous Dirichlet boundary conditions are not taken into account here; if this matrix is used for prolongation (mesh refinement) on a side with a heterogeneous BC, the newly created degrees of freedom on that side will still match the coarse grid approximation of the BC, not the fine grid approximation.

This method creates a projection matrix which corresponds to the operation of project_vector between old and new solution spaces.

Definition at line 730 of file system_projection.C.

References libMesh::Utility::iota(), n_vars, libMesh::Threads::parallel_for(), libMesh::SCALAR, libMesh::DofMap::SCALAR_dof_indices(), and libMesh::SparseMatrix< T >::set().

 {
   LOG_SCOPE ("projection_matrix()", "System");
 
   const unsigned int n_variables = this->n_vars();
 
   if (n_variables)
     {
       ConstElemRange active_local_elem_range
         (this->get_mesh().active_local_elements_begin(),
          this->get_mesh().active_local_elements_end());
 
       std::vector<unsigned int> vars(n_variables);
       std::iota(vars.begin(), vars.end(), 0);
 
       // Use a typedef to make the calling sequence for parallel_for() a bit more readable
       typedef OldSolutionCoefs<Real, &FEMContext::point_value> OldSolutionValueCoefs;
       typedef OldSolutionCoefs<RealGradient, &FEMContext::point_gradient> OldSolutionGradientCoefs;
 
       typedef
         GenericProjector<OldSolutionValueCoefs,
                          OldSolutionGradientCoefs,
                          DynamicSparseNumberArray<Real,dof_id_type>,
                          MatrixFillAction<Real, Number> > ProjMatFiller;
 
       OldSolutionValueCoefs    f(*this);
       OldSolutionGradientCoefs g(*this);
       MatrixFillAction<Real, Number> setter(proj_mat);
 
       Threads::parallel_for (active_local_elem_range,
                              ProjMatFiller(*this, f, &g, setter, vars));
 
       // Set the SCALAR dof transfer entries too.
       // Note: We assume that all SCALAR dofs are on the
       // processor with highest ID
       if (this->processor_id() == (this->n_processors()-1))
         {
           const DofMap & dof_map = this->get_dof_map();
           for (unsigned int var=0; var<this->n_vars(); var++)
             if (this->variable(var).type().family == SCALAR)
               {
                 // We can just map SCALAR dofs directly across
                 std::vector<dof_id_type> new_SCALAR_indices, old_SCALAR_indices;
                 dof_map.SCALAR_dof_indices (new_SCALAR_indices, var, false);
                 dof_map.SCALAR_dof_indices (old_SCALAR_indices, var, true);
                 const unsigned int new_n_dofs =
                   cast_int<unsigned int>(new_SCALAR_indices.size());
 
                 for (unsigned int i=0; i<new_n_dofs; i++)
                   {
                     proj_mat.set( new_SCALAR_indices[i],
                                   old_SCALAR_indices[i], 1);
                   }
               }
         }
     }
 }

◆ prolong_vectors()

void libMesh::System::prolong_vectors ( )

virtualinherited

Prolong vectors after the mesh has refined

Definition at line 380 of file system.C.

References libMesh::System::restrict_vectors().

Referenced by libMesh::EquationSystems::reinit_solutions().

 {
 #ifdef LIBMESH_ENABLE_AMR
   // Currently project_vector handles both restriction and prolongation
   this->restrict_vectors();
 #endif
 }

◆ qoi_parameter_hessian()

void libMesh::ImplicitSystem::qoi_parameter_hessian	(	const QoISet &	qoi_indices,
		const ParameterVector &	parameters,
		SensitivityData &	hessian
	)

overridevirtualinherited

For each of the system's quantities of interest q in qoi[qoi_indices], and for a vector of parameters p, the parameter sensitivity Hessian H_ij is defined as H_ij = (d^2 q)/(d p_i d p_j) This Hessian is the output of this method, where for each q_i, H_jk is stored in hessian.second_derivative(i,j,k).

Note that in some cases only current_local_solution is used during assembly, and, therefore, if solution has been altered without update() being called, then the user must call update() before calling this function.

Reimplemented from libMesh::System.

Definition at line 1102 of file implicit_system.C.

References libMesh::ImplicitSystem::adjoint_solve(), libMesh::SensitivityData::allocate_hessian_data(), libMesh::ExplicitSystem::assemble_qoi(), libMesh::ExplicitSystem::assemble_qoi_derivative(), libMesh::ImplicitSystem::assembly(), libMesh::NumericVector< T >::close(), libMesh::SparseMatrix< T >::close(), libMesh::NumericVector< T >::dot(), libMesh::System::get_adjoint_rhs(), libMesh::System::get_adjoint_solution(), libMesh::System::get_sensitivity_solution(), libMesh::QoISet::has_index(), libMesh::System::is_adjoint_already_solved(), libMesh::ImplicitSystem::matrix, libMesh::System::n_qois(), libMesh::System::qoi, libMesh::Real, libMesh::ExplicitSystem::rhs, libMesh::SensitivityData::second_derivative(), libMesh::ImplicitSystem::sensitivity_solve(), libMesh::ParameterVector::size(), libMesh::System::solution, libMesh::TOLERANCE, libMesh::System::update(), and libMesh::SparseMatrix< T >::vector_mult().

 {
   // We currently get partial derivatives via finite differencing
   const Real delta_p = TOLERANCE;
 
   ParameterVector & parameters =
     const_cast<ParameterVector &>(parameters_in);
 
   // We'll use one temporary vector for matrix-vector-vector products
   std::unique_ptr<NumericVector<Number>> tempvec = this->solution->zero_clone();
 
   // And another temporary vector to hold a copy of the true solution
   // so we can safely perturb this->solution.
   std::unique_ptr<NumericVector<Number>> oldsolution = this->solution->clone();
 
   const unsigned int Np = cast_int<unsigned int>
     (parameters.size());
   const unsigned int Nq = this->n_qois();
 
   // For each quantity of interest q, the parameter sensitivity
   // Hessian is defined as q''_{kl} = {d^2 q}/{d p_k d p_l}.
   //
   // We calculate it from values and partial derivatives of the
   // quantity of interest function Q, solution u, adjoint solution z,
   // and residual R, as:
   //
   // q''_{kl} =
   // Q''_{kl} + Q''_{uk}(u)*u'_l + Q''_{ul}(u) * u'_k +
   // Q''_{uu}(u)*u'_k*u'_l -
   // R''_{kl}(u,z) -
   // R''_{uk}(u,z)*u'_l - R''_{ul}(u,z)*u'_k -
   // R''_{uu}(u,z)*u'_k*u'_l
   //
   // See the adjoints model document for more details.
 
   // We first do an adjoint solve to get z for each quantity of
   // interest
   // if we havent already or dont have an initial condition for the adjoint
   if (!this->is_adjoint_already_solved())
     {
       this->adjoint_solve(qoi_indices);
     }
 
   // And a sensitivity solve to get u_k for each parameter
   this->sensitivity_solve(parameters);
 
   // Get ready to fill in second derivatives:
   sensitivities.allocate_hessian_data(qoi_indices, *this, parameters);
 
   for (unsigned int k=0; k != Np; ++k)
     {
       Number old_parameterk = *parameters[k];
 
       // The Hessian is symmetric, so we just calculate the lower
       // triangle and the diagonal, and we get the upper triangle from
       // the transpose of the lower
 
       for (unsigned int l=0; l != k+1; ++l)
         {
           // The second partial derivatives with respect to parameters
           // are all calculated via a central finite difference
           // stencil:
           // F''_{kl} ~= (F(p+dp*e_k+dp*e_l) - F(p+dp*e_k-dp*e_l) -
           //              F(p-dp*e_k+dp*e_l) + F(p-dp*e_k-dp*e_l))/(4*dp^2)
           // We will add Q''_{kl}(u) and subtract R''_{kl}(u,z) at the
           // same time.
           //
           // We have to be careful with the perturbations to handle
           // the k=l case
 
           Number old_parameterl = *parameters[l];
 
           *parameters[k] += delta_p;
           *parameters[l] += delta_p;
           this->assemble_qoi(qoi_indices);
           this->assembly(true, false, true);
           this->rhs->close();
           std::vector<Number> partial2q_term = this->qoi;
           std::vector<Number> partial2R_term(this->n_qois());
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               partial2R_term[i] = this->rhs->dot(this->get_adjoint_solution(i));
 
           *parameters[l] -= 2.*delta_p;
           this->assemble_qoi(qoi_indices);
           this->assembly(true, false, true);
           this->rhs->close();
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               {
                 partial2q_term[i] -= this->qoi[i];
                 partial2R_term[i] -= this->rhs->dot(this->get_adjoint_solution(i));
               }
 
           *parameters[k] -= 2.*delta_p;
           this->assemble_qoi(qoi_indices);
           this->assembly(true, false, true);
           this->rhs->close();
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               {
                 partial2q_term[i] += this->qoi[i];
                 partial2R_term[i] += this->rhs->dot(this->get_adjoint_solution(i));
               }
 
           *parameters[l] += 2.*delta_p;
           this->assemble_qoi(qoi_indices);
           this->assembly(true, false, true);
           this->rhs->close();
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               {
                 partial2q_term[i] -= this->qoi[i];
                 partial2R_term[i] -= this->rhs->dot(this->get_adjoint_solution(i));
                 partial2q_term[i] /= (4. * delta_p * delta_p);
                 partial2R_term[i] /= (4. * delta_p * delta_p);
               }
 
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               {
                 Number current_terms = partial2q_term[i] - partial2R_term[i];
                 sensitivities.second_derivative(i,k,l) += current_terms;
                 if (k != l)
                   sensitivities.second_derivative(i,l,k) += current_terms;
               }
 
           // Don't leave the parameters perturbed
           *parameters[l] = old_parameterl;
           *parameters[k] = old_parameterk;
         }
 
       // We get (partial q / partial u) and
       // (partial R / partial u) from the user, but centrally
       // difference to get q_uk and R_uk terms:
       // (partial^2 q / partial u partial k)
       // q_uk*u'_l = (q_u(p+dp*e_k)*u'_l - q_u(p-dp*e_k)*u'_l)/(2*dp)
       // R_uk*z*u'_l = (R_u(p+dp*e_k)*z*u'_l - R_u(p-dp*e_k)*z*u'_l)/(2*dp)
       //
       // To avoid creating Nq temporary vectors, we add these
       // subterms to the sensitivities output one by one.
       //
       // FIXME: this is probably a bad order of operations for
       // controlling floating point error.
 
       *parameters[k] = old_parameterk + delta_p;
       this->assembly(false, true);
       this->matrix->close();
       this->assemble_qoi_derivative(qoi_indices,
                                     /* include_liftfunc = */ true,
                                     /* apply_constraints = */ false);
 
       for (unsigned int l=0; l != Np; ++l)
         {
           this->matrix->vector_mult(*tempvec, this->get_sensitivity_solution(l));
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               {
                 this->get_adjoint_rhs(i).close();
                 Number current_terms =
                   (this->get_adjoint_rhs(i).dot(this->get_sensitivity_solution(l)) -
                    tempvec->dot(this->get_adjoint_solution(i))) / (2.*delta_p);
                 sensitivities.second_derivative(i,k,l) += current_terms;
 
                 // We use the _uk terms twice; symmetry lets us reuse
                 // these calculations for the _ul terms.
 
                 sensitivities.second_derivative(i,l,k) += current_terms;
               }
         }
 
       *parameters[k] = old_parameterk - delta_p;
       this->assembly(false, true);
       this->matrix->close();
       this->assemble_qoi_derivative(qoi_indices,
                                     /* include_liftfunc = */ true,
                                     /* apply_constraints = */ false);
 
       for (unsigned int l=0; l != Np; ++l)
         {
           this->matrix->vector_mult(*tempvec, this->get_sensitivity_solution(l));
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               {
                 this->get_adjoint_rhs(i).close();
                 Number current_terms =
                   (-this->get_adjoint_rhs(i).dot(this->get_sensitivity_solution(l)) +
                    tempvec->dot(this->get_adjoint_solution(i))) / (2.*delta_p);
                 sensitivities.second_derivative(i,k,l) += current_terms;
 
                 // We use the _uk terms twice; symmetry lets us reuse
                 // these calculations for the _ul terms.
 
                 sensitivities.second_derivative(i,l,k) += current_terms;
               }
         }
 
       // Don't leave the parameter perturbed
       *parameters[k] = old_parameterk;
 
       // Our last remaining terms are -R_uu(u,z)*u_k*u_l and
       // Q_uu(u)*u_k*u_l
       //
       // We take directional central finite differences of R_u and Q_u
       // to approximate these terms, e.g.:
       //
       // Q_uu(u)*u_k ~= (Q_u(u+dp*u_k) - Q_u(u-dp*u_k))/(2*dp)
 
       *this->solution = this->get_sensitivity_solution(k);
       *this->solution *= delta_p;
       *this->solution += *oldsolution;
 
       // We've modified solution, so we need to update before calling
       // assembly since assembly may only use current_local_solution
       this->update();
       this->assembly(false, true);
       this->matrix->close();
       this->assemble_qoi_derivative(qoi_indices,
                                     /* include_liftfunc = */ true,
                                     /* apply_constraints = */ false);
 
       // The Hessian is symmetric, so we just calculate the lower
       // triangle and the diagonal, and we get the upper triangle from
       // the transpose of the lower
       //
       // Note that, because we took the directional finite difference
       // with respect to k and not l, we've added an O(delta_p^2)
       // error to any permutational symmetry in the Hessian...
       for (unsigned int l=0; l != k+1; ++l)
         {
           this->matrix->vector_mult(*tempvec, this->get_sensitivity_solution(l));
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               {
                 this->get_adjoint_rhs(i).close();
                 Number current_terms =
                   (this->get_adjoint_rhs(i).dot(this->get_sensitivity_solution(l)) -
                    tempvec->dot(this->get_adjoint_solution(i))) / (2.*delta_p);
                 sensitivities.second_derivative(i,k,l) += current_terms;
                 if (k != l)
                   sensitivities.second_derivative(i,l,k) += current_terms;
               }
         }
 
       *this->solution = this->get_sensitivity_solution(k);
       *this->solution *= -delta_p;
       *this->solution += *oldsolution;
 
       // We've modified solution, so we need to update before calling
       // assembly since assembly may only use current_local_solution
       this->update();
       this->assembly(false, true);
       this->matrix->close();
       this->assemble_qoi_derivative(qoi_indices,
                                     /* include_liftfunc = */ true,
                                     /* apply_constraints = */ false);
 
       for (unsigned int l=0; l != k+1; ++l)
         {
           this->matrix->vector_mult(*tempvec, this->get_sensitivity_solution(l));
           for (unsigned int i=0; i != Nq; ++i)
             if (qoi_indices.has_index(i))
               {
                 this->get_adjoint_rhs(i).close();
                 Number current_terms =
                   (-this->get_adjoint_rhs(i).dot(this->get_sensitivity_solution(l)) +
                    tempvec->dot(this->get_adjoint_solution(i))) / (2.*delta_p);
                 sensitivities.second_derivative(i,k,l) += current_terms;
                 if (k != l)
                   sensitivities.second_derivative(i,l,k) += current_terms;
               }
         }
 
       // Don't leave the solution perturbed
       *this->solution = *oldsolution;
     }
 
   // All parameters have been reset.
   // Don't leave the qoi or system changed - principle of least
   // surprise.
   // We've modified solution, so we need to update before calling
   // assembly since assembly may only use current_local_solution
   this->update();
   this->assembly(true, true);
   this->rhs->close();
   this->matrix->close();
   this->assemble_qoi(qoi_indices);
 }

◆ qoi_parameter_hessian_vector_product()

void libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product	(	const QoISet &	qoi_indices,
		const ParameterVector &	parameters,
		const ParameterVector &	vector,
		SensitivityData &	product
	)

overridevirtualinherited

For each of the system's quantities of interest q in qoi[qoi_indices], and for a vector of parameters p, the parameter sensitivity Hessian H_ij is defined as H_ij = (d^2 q)/(d p_i d p_j) The Hessian-vector product, for a vector v_k in parameter space, is S_j = H_jk v_k This product is the output of this method, where for each q_i, S_j is stored in sensitivities[i][j].

Reimplemented from libMesh::System.

Definition at line 897 of file implicit_system.C.

References libMesh::ImplicitSystem::adjoint_solve(), libMesh::SensitivityData::allocate_data(), libMesh::ExplicitSystem::assemble_qoi(), libMesh::ExplicitSystem::assemble_qoi_derivative(), libMesh::ImplicitSystem::assembly(), libMesh::NumericVector< T >::close(), libMesh::SparseMatrix< T >::close(), libMesh::ParameterVector::deep_copy(), libMesh::NumericVector< T >::dot(), libMesh::System::get_adjoint_rhs(), libMesh::System::get_adjoint_solution(), libMesh::System::get_weighted_sensitivity_adjoint_solution(), libMesh::System::get_weighted_sensitivity_solution(), libMesh::QoISet::has_index(), libMesh::System::is_adjoint_already_solved(), libMesh::ImplicitSystem::matrix, libMesh::System::n_qois(), libMesh::System::qoi, libMesh::Real, libMesh::ExplicitSystem::rhs, libMesh::ParameterVector::size(), libMesh::System::solution, libMesh::TOLERANCE, libMesh::ParameterVector::value_copy(), libMesh::SparseMatrix< T >::vector_mult(), libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve(), and libMesh::ImplicitSystem::weighted_sensitivity_solve().

 {
   // We currently get partial derivatives via finite differencing
   const Real delta_p = TOLERANCE;
 
   ParameterVector & parameters =
     const_cast<ParameterVector &>(parameters_in);
 
   // We'll use a single temporary vector for matrix-vector-vector products
   std::unique_ptr<NumericVector<Number>> tempvec = this->solution->zero_clone();
 
   const unsigned int Np = cast_int<unsigned int>
     (parameters.size());
   const unsigned int Nq = this->n_qois();
 
   // For each quantity of interest q, the parameter sensitivity
   // Hessian is defined as q''_{kl} = {d^2 q}/{d p_k d p_l}.
   // Given a vector of parameter perturbation weights w_l, this
   // function evaluates the hessian-vector product sum_l(q''_{kl}*w_l)
   //
   // We calculate it from values and partial derivatives of the
   // quantity of interest function Q, solution u, adjoint solution z,
   // parameter sensitivity adjoint solutions z^l, and residual R, as:
   //
   // sum_l(q''_{kl}*w_l) =
   // sum_l(w_l * Q''_{kl}) + Q''_{uk}(u)*(sum_l(w_l u'_l)) -
   // R'_k(u, sum_l(w_l*z^l)) - R'_{uk}(u,z)*(sum_l(w_l u'_l) -
   // sum_l(w_l*R''_{kl}(u,z))
   //
   // See the adjoints model document for more details.
 
   // We first do an adjoint solve to get z for each quantity of
   // interest
   // if we havent already or dont have an initial condition for the adjoint
   if (!this->is_adjoint_already_solved())
     {
       this->adjoint_solve(qoi_indices);
     }
 
   // Get ready to fill in sensitivities:
   sensitivities.allocate_data(qoi_indices, *this, parameters);
 
   // We can't solve for all the solution sensitivities u'_l or for all
   // of the parameter sensitivity adjoint solutions z^l without
   // requiring O(Nq*Np) linear solves.  So we'll solve directly for their
   // weighted sum - this is just O(Nq) solves.
 
   // First solve for sum_l(w_l u'_l).
   this->weighted_sensitivity_solve(parameters, vector);
 
   // Then solve for sum_l(w_l z^l).
   this->weighted_sensitivity_adjoint_solve(parameters, vector, qoi_indices);
 
   for (unsigned int k=0; k != Np; ++k)
     {
       // We approximate sum_l(w_l * Q''_{kl}) with a central
       // differencing perturbation:
       // sum_l(w_l * Q''_{kl}) ~=
       // (Q(p + dp*w_l*e_l + dp*e_k) - Q(p - dp*w_l*e_l + dp*e_k) -
       // Q(p + dp*w_l*e_l - dp*e_k) + Q(p - dp*w_l*e_l - dp*e_k))/(4*dp^2)
 
       // The sum(w_l*R''_kl) term requires the same sort of perturbation,
       // and so we subtract it in at the same time:
       // sum_l(w_l * R''_{kl}) ~=
       // (R(p + dp*w_l*e_l + dp*e_k) - R(p - dp*w_l*e_l + dp*e_k) -
       // R(p + dp*w_l*e_l - dp*e_k) + R(p - dp*w_l*e_l - dp*e_k))/(4*dp^2)
 
       ParameterVector oldparameters, parameterperturbation;
       parameters.deep_copy(oldparameters);
       vector.deep_copy(parameterperturbation);
       parameterperturbation *= delta_p;
       parameters += parameterperturbation;
 
       Number old_parameter = *parameters[k];
 
       *parameters[k] = old_parameter + delta_p;
       this->assemble_qoi(qoi_indices);
       this->assembly(true, false, true);
       this->rhs->close();
       std::vector<Number> partial2q_term = this->qoi;
       std::vector<Number> partial2R_term(this->n_qois());
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           partial2R_term[i] = this->rhs->dot(this->get_adjoint_solution(i));
 
       *parameters[k] = old_parameter - delta_p;
       this->assemble_qoi(qoi_indices);
       this->assembly(true, false, true);
       this->rhs->close();
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           {
             partial2q_term[i] -= this->qoi[i];
             partial2R_term[i] -= this->rhs->dot(this->get_adjoint_solution(i));
           }
 
       oldparameters.value_copy(parameters);
       parameterperturbation *= -1.0;
       parameters += parameterperturbation;
 
       // Re-center old_parameter, which may be affected by vector
       old_parameter = *parameters[k];
 
       *parameters[k] = old_parameter + delta_p;
       this->assemble_qoi(qoi_indices);
       this->assembly(true, false, true);
       this->rhs->close();
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           {
             partial2q_term[i] -= this->qoi[i];
             partial2R_term[i] -= this->rhs->dot(this->get_adjoint_solution(i));
           }
 
       *parameters[k] = old_parameter - delta_p;
       this->assemble_qoi(qoi_indices);
       this->assembly(true, false, true);
       this->rhs->close();
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           {
             partial2q_term[i] += this->qoi[i];
             partial2R_term[i] += this->rhs->dot(this->get_adjoint_solution(i));
           }
 
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           {
             partial2q_term[i] /= (4. * delta_p * delta_p);
             partial2R_term[i] /= (4. * delta_p * delta_p);
           }
 
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           sensitivities[i][k] = partial2q_term[i] - partial2R_term[i];
 
       // We get (partial q / partial u), R, and
       // (partial R / partial u) from the user, but centrally
       // difference to get q_uk, R_k, and R_uk terms:
       // (partial R / partial k)
       // R_k*sum(w_l*z^l) = (R(p+dp*e_k)*sum(w_l*z^l) - R(p-dp*e_k)*sum(w_l*z^l))/(2*dp)
       // (partial^2 q / partial u partial k)
       // q_uk = (q_u(p+dp*e_k) - q_u(p-dp*e_k))/(2*dp)
       // (partial^2 R / partial u partial k)
       // R_uk*z*sum(w_l*u'_l) = (R_u(p+dp*e_k)*z*sum(w_l*u'_l) - R_u(p-dp*e_k)*z*sum(w_l*u'_l))/(2*dp)
 
       // To avoid creating Nq temporary vectors for q_uk or R_uk, we add
       // subterms to the sensitivities output one by one.
       //
       // FIXME: this is probably a bad order of operations for
       // controlling floating point error.
 
       *parameters[k] = old_parameter + delta_p;
       this->assembly(true, true);
       this->rhs->close();
       this->matrix->close();
       this->assemble_qoi_derivative(qoi_indices,
                                     /* include_liftfunc = */ true,
                                     /* apply_constraints = */ false);
 
       this->matrix->vector_mult(*tempvec, this->get_weighted_sensitivity_solution());
 
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           {
             this->get_adjoint_rhs(i).close();
             sensitivities[i][k] += (this->get_adjoint_rhs(i).dot(this->get_weighted_sensitivity_solution()) -
                                     this->rhs->dot(this->get_weighted_sensitivity_adjoint_solution(i)) -
                                     this->get_adjoint_solution(i).dot(*tempvec)) / (2.*delta_p);
           }
 
       *parameters[k] = old_parameter - delta_p;
       this->assembly(true, true);
       this->rhs->close();
       this->matrix->close();
       this->assemble_qoi_derivative(qoi_indices,
                                     /* include_liftfunc = */ true,
                                     /* apply_constraints = */ false);
 
       this->matrix->vector_mult(*tempvec, this->get_weighted_sensitivity_solution());
 
       for (unsigned int i=0; i != Nq; ++i)
         if (qoi_indices.has_index(i))
           {
             this->get_adjoint_rhs(i).close();
             sensitivities[i][k] += (-this->get_adjoint_rhs(i).dot(this->get_weighted_sensitivity_solution()) +
                                     this->rhs->dot(this->get_weighted_sensitivity_adjoint_solution(i)) +
                                     this->get_adjoint_solution(i).dot(*tempvec)) / (2.*delta_p);
           }
     }
 
   // All parameters have been reset.
   // Don't leave the qoi or system changed - principle of least
   // surprise.
   this->assembly(true, true);
   this->rhs->close();
   this->matrix->close();
   this->assemble_qoi(qoi_indices);
 }

◆ qoi_parameter_sensitivity()

void libMesh::System::qoi_parameter_sensitivity	(	const QoISet &	qoi_indices,
		const ParameterVector &	parameters,
		SensitivityData &	sensitivities
	)

virtualinherited

Solves for the derivative of each of the system's quantities of interest q in qoi[qoi_indices] with respect to each parameter in parameters, placing the result for qoi i and parameter j into sensitivities[i][j].

Note: parameters is a const vector, not a vector-of-const; parameter values in this vector need to be mutable for finite differencing to work.

Automatically chooses the forward method for problems with more quantities of interest than parameters, or the adjoint method otherwise.

This method is only usable in derived classes which override an implementation.

Definition at line 498 of file system.C.

References libMesh::System::adjoint_qoi_parameter_sensitivity(), libMesh::System::forward_qoi_parameter_sensitivity(), libMesh::ParameterVector::size(), and libMesh::QoISet::size().

 {
   // Forward sensitivities are more efficient for Nq > Np
   if (qoi_indices.size(*this) > parameters.size())
     forward_qoi_parameter_sensitivity(qoi_indices, parameters, sensitivities);
   // Adjoint sensitivities are more efficient for Np > Nq,
   // and an adjoint may be more reusable than a forward
   // solution sensitivity in the Np == Nq case.
   else
     adjoint_qoi_parameter_sensitivity(qoi_indices, parameters, sensitivities);
 }

◆ re_update()

void libMesh::System::re_update ( )

virtualinherited

Re-update the local values when the mesh has changed. This method takes the data updated by update() and makes it up-to-date on the current mesh.

Reimplemented in libMesh::TransientSystem< RBConstruction >.

Definition at line 429 of file system.C.

References libMesh::System::current_local_solution, libMesh::System::get_dof_map(), libMesh::DofMap::get_send_list(), libMesh::System::n_vars(), and libMesh::System::solution.

 {
   parallel_object_only();
 
   // If this system is empty... don't do anything!
   if (!this->n_vars())
     return;
 
   const std::vector<dof_id_type> & send_list = this->get_dof_map().get_send_list ();
 
   // Check sizes
   libmesh_assert_equal_to (current_local_solution->size(), solution->size());
   // Not true with ghosted vectors
   // libmesh_assert_equal_to (current_local_solution->local_size(), solution->size());
   // libmesh_assert (!send_list.empty());
   libmesh_assert_less_equal (send_list.size(), solution->size());
 
   // Create current_local_solution from solution.  This will
   // put a local copy of solution into current_local_solution.
   solution->localize (*current_local_solution, send_list);
 }

◆ read_header()

void libMesh::System::read_header	(	Xdr &	io,
		const std::string &	version,
		const bool	read_header = `true`,
		const bool	read_additional_data = `true`,
		const bool	read_legacy_format = `false`
	)

inherited

Reads the basic data header for this System.

Definition at line 115 of file system_io.C.

References libMesh::System::_additional_data_written, libMesh::System::_written_var_indices, libMesh::System::add_variable(), libMesh::System::add_vector(), libMesh::Parallel::Communicator::broadcast(), libMesh::System::clear(), libMesh::ParallelObject::comm(), libMesh::Xdr::data(), libMesh::FEType::family, libMesh::System::get_mesh(), libMesh::OrderWrapper::get_order(), libMesh::FEType::inf_map, libMesh::MeshBase::mesh_dimension(), libMesh::MONOMIAL, libMesh::on_command_line(), libMesh::FEType::order, libMesh::out, libMesh::ParallelObject::processor_id(), libMesh::FEType::radial_family, libMesh::FEType::radial_order, libMesh::Xdr::reading(), libMesh::System::variable_number(), libMesh::Xdr::version(), and libMesh::XYZ.

Referenced by libMesh::EquationSystems::_read_impl().

 {
   // This method implements the input of a
   // System object, embedded in the output of
   // an EquationSystems<T_sys>.  This warrants some
   // documentation.  The output file essentially
   // consists of 5 sections:
   //
   // for this system
   //
   //   5.) The number of variables in the system (unsigned int)
   //
   //   for each variable in the system
   //
   //     6.) The name of the variable (string)
   //
   //     6.1.) Variable subdomains
   //
   //     7.) Combined in an FEType:
   //         - The approximation order(s) of the variable
   //           (Order Enum, cast to int/s)
   //         - The finite element family/ies of the variable
   //           (FEFamily Enum, cast to int/s)
   //
   //   end variable loop
   //
   //   8.) The number of additional vectors (unsigned int),
   //
   //     for each additional vector in the system object
   //
   //     9.) the name of the additional vector  (string)
   //
   // end system
   libmesh_assert (io.reading());
 
   // Possibly clear data structures and start from scratch.
   if (read_header_in)
     this->clear ();
 
   // Figure out if we need to read infinite element information.
   // This will be true if the version string contains " with infinite elements"
   const bool read_ifem_info =
     (version.rfind(" with infinite elements") < version.size()) ||
     libMesh::on_command_line ("--read-ifem-systems");
 
 
   {
     // 5.)
     // Read the number of variables in the system
     unsigned int nv=0;
     if (this->processor_id() == 0)
       io.data (nv);
     this->comm().broadcast(nv);
 
     _written_var_indices.clear();
     _written_var_indices.resize(nv, 0);
 
     for (unsigned int var=0; var<nv; var++)
       {
         // 6.)
         // Read the name of the var-th variable
         std::string var_name;
         if (this->processor_id() == 0)
           io.data (var_name);
         this->comm().broadcast(var_name);
 
         // 6.1.)
         std::set<subdomain_id_type> domains;
         if (io.version() >= LIBMESH_VERSION_ID(0,7,2))
           {
             std::vector<subdomain_id_type> domain_array;
             if (this->processor_id() == 0)
               io.data (domain_array);
             for (const auto & id : domain_array)
               domains.insert(id);
           }
         this->comm().broadcast(domains);
 
         // 7.)
         // Read the approximation order(s) of the var-th variable
         int order=0;
         if (this->processor_id() == 0)
           io.data (order);
         this->comm().broadcast(order);
 
 
         // do the same for infinite element radial_order
         int rad_order=0;
         if (read_ifem_info)
           {
             if (this->processor_id() == 0)
               io.data(rad_order);
             this->comm().broadcast(rad_order);
           }
 
         // Read the finite element type of the var-th variable
         int fam=0;
         if (this->processor_id() == 0)
           io.data (fam);
         this->comm().broadcast(fam);
         FEType type;
         type.order  = static_cast<Order>(order);
         type.family = static_cast<FEFamily>(fam);
 
         // Check for incompatibilities.  The shape function indexing was
         // changed for the monomial and xyz finite element families to
         // simplify extension to arbitrary p.  The consequence is that
         // old restart files will not be read correctly.  This is expected
         // to be an unlikely occurence, but catch it anyway.
         if (read_legacy_format)
           if ((type.family == MONOMIAL || type.family == XYZ) &&
               ((type.order.get_order() > 2 && this->get_mesh().mesh_dimension() == 2) ||
                (type.order.get_order() > 1 && this->get_mesh().mesh_dimension() == 3)))
             {
               libmesh_here();
               libMesh::out << "*****************************************************************\n"
                            << "* WARNING: reading a potentially incompatible restart file!!!   *\n"
                            << "*  contact libmesh-users@lists.sourceforge.net for more details *\n"
                            << "*****************************************************************"
                            << std::endl;
             }
 
         // Read additional information for infinite elements
         int radial_fam=0;
         int i_map=0;
         if (read_ifem_info)
           {
             if (this->processor_id() == 0)
               io.data (radial_fam);
             this->comm().broadcast(radial_fam);
             if (this->processor_id() == 0)
               io.data (i_map);
             this->comm().broadcast(i_map);
           }
 
 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
 
         type.radial_order  = static_cast<Order>(rad_order);
         type.radial_family = static_cast<FEFamily>(radial_fam);
         type.inf_map       = static_cast<InfMapType>(i_map);
 
 #endif
 
         if (read_header_in)
           {
             if (domains.empty())
               _written_var_indices[var] = this->add_variable (var_name, type);
             else
               _written_var_indices[var] = this->add_variable (var_name, type, &domains);
           }
         else
           _written_var_indices[var] = this->variable_number(var_name);
       }
   }
 
   // 8.)
   // Read the number of additional vectors.
   unsigned int nvecs=0;
   if (this->processor_id() == 0)
     io.data (nvecs);
   this->comm().broadcast(nvecs);
 
   // If nvecs > 0, this means that write_additional_data
   // was true when this file was written.  We will need to
   // make use of this fact later.
   this->_additional_data_written = nvecs;
 
   for (unsigned int vec=0; vec<nvecs; vec++)
     {
       // 9.)
       // Read the name of the vec-th additional vector
       std::string vec_name;
       if (this->processor_id() == 0)
         io.data (vec_name);
       this->comm().broadcast(vec_name);
 
       if (read_additional_data)
         {
           // Systems now can handle adding post-initialization vectors
           //  libmesh_assert(this->_can_add_vectors);
           // Some systems may have added their own vectors already
           //  libmesh_assert_equal_to (this->_vectors.count(vec_name), 0);
 
           this->add_vector(vec_name);
         }
     }
 }

◆ read_legacy_data()

void libMesh::System::read_legacy_data	(	Xdr &	io,
		const bool	read_additional_data = `true`
	)

inherited

Reads additional data, namely vectors, for this System.

Deprecated:: The ability to read XDR data files in the old (aka "legacy") XDR format has been deprecated for many years, this capability may soon disappear altogether.

Definition at line 310 of file system_io.C.

References libMesh::System::_additional_data_written, libMesh::System::_vectors, libMesh::System::_written_var_indices, libMesh::Parallel::Communicator::broadcast(), libMesh::ParallelObject::comm(), libMesh::Xdr::data(), libMesh::System::get_mesh(), libMesh::DofObject::invalid_id, libMesh::System::n_dofs(), libMesh::System::n_vars(), libMesh::System::number(), libMesh::ParallelObject::processor_id(), libMesh::Xdr::reading(), libMesh::System::solution, and libMesh::zero.

 {
   libmesh_deprecated();
 
   // This method implements the output of the vectors
   // contained in this System object, embedded in the
   // output of an EquationSystems<T_sys>.
   //
   //   10.) The global solution vector, re-ordered to be node-major
   //       (More on this later.)
   //
   //      for each additional vector in the object
   //
   //      11.) The global additional vector, re-ordered to be
   //           node-major (More on this later.)
   libmesh_assert (io.reading());
 
   // read and reordering buffers
   std::vector<Number> global_vector;
   std::vector<Number> reordered_vector;
 
   // 10.)
   // Read and set the solution vector
   {
     if (this->processor_id() == 0)
       io.data (global_vector);
     this->comm().broadcast(global_vector);
 
     // Remember that the stored vector is node-major.
     // We need to put it into whatever application-specific
     // ordering we may have using the dof_map.
     reordered_vector.resize(global_vector.size());
 
     //libMesh::out << "global_vector.size()=" << global_vector.size() << std::endl;
     //libMesh::out << "this->n_dofs()=" << this->n_dofs() << std::endl;
 
     libmesh_assert_equal_to (global_vector.size(), this->n_dofs());
 
     dof_id_type cnt=0;
 
     const unsigned int sys = this->number();
     const unsigned int nv  = cast_int<unsigned int>
       (this->_written_var_indices.size());
     libmesh_assert_less_equal (nv, this->n_vars());
 
     for (unsigned int data_var=0; data_var<nv; data_var++)
       {
         const unsigned int var = _written_var_indices[data_var];
 
         // First reorder the nodal DOF values
         for (auto & node : this->get_mesh().node_ptr_range())
           for (unsigned int index=0; index<node->n_comp(sys,var); index++)
             {
               libmesh_assert_not_equal_to (node->dof_number(sys, var, index),
                                            DofObject::invalid_id);
 
               libmesh_assert_less (cnt, global_vector.size());
 
               reordered_vector[node->dof_number(sys, var, index)] =
                 global_vector[cnt++];
             }
 
         // Then reorder the element DOF values
         for (auto & elem : this->get_mesh().active_element_ptr_range())
           for (unsigned int index=0; index<elem->n_comp(sys,var); index++)
             {
               libmesh_assert_not_equal_to (elem->dof_number(sys, var, index),
                                            DofObject::invalid_id);
 
               libmesh_assert_less (cnt, global_vector.size());
 
               reordered_vector[elem->dof_number(sys, var, index)] =
                 global_vector[cnt++];
             }
       }
 
     *(this->solution) = reordered_vector;
   }
 
   // For each additional vector, simply go through the list.
   // ONLY attempt to do this IF additional data was actually
   // written to the file for this system (controlled by the
   // _additional_data_written flag).
   if (this->_additional_data_written)
     {
       const std::size_t nvecs = this->_vectors.size();
 
       // If the number of additional vectors written is non-zero, and
       // the number of additional vectors we have is non-zero, and
       // they don't match, then something is wrong and we can't be
       // sure we're reading data into the correct places.
       if (read_additional_data && nvecs &&
           nvecs != this->_additional_data_written)
         libmesh_error_msg
           ("Additional vectors in file do not match system");
 
       std::map<std::string, NumericVector<Number> *>::iterator
         pos = this->_vectors.begin();
 
       for (std::size_t i = 0; i != this->_additional_data_written; ++i)
         {
           // 11.)
           // Read the values of the vec-th additional vector.
           // Prior do _not_ clear, but fill with zero, since the
           // additional vectors _have_ to have the same size
           // as the solution vector
           std::fill (global_vector.begin(), global_vector.end(), libMesh::zero);
 
           if (this->processor_id() == 0)
             io.data (global_vector);
 
           // If read_additional_data==true and we have additional vectors,
           // then we will keep this vector data; otherwise we are going to
           // throw it away.
           if (read_additional_data && nvecs)
             {
               this->comm().broadcast(global_vector);
 
               // Remember that the stored vector is node-major.
               // We need to put it into whatever application-specific
               // ordering we may have using the dof_map.
               std::fill (reordered_vector.begin(),
                          reordered_vector.end(),
                          libMesh::zero);
 
               reordered_vector.resize(global_vector.size());
 
               libmesh_assert_equal_to (global_vector.size(), this->n_dofs());
 
               dof_id_type cnt=0;
 
               const unsigned int sys = this->number();
               const unsigned int nv  = cast_int<unsigned int>
                 (this->_written_var_indices.size());
               libmesh_assert_less_equal (nv, this->n_vars());
 
               for (unsigned int data_var=0; data_var<nv; data_var++)
                 {
                   const unsigned int var = _written_var_indices[data_var];
                   // First reorder the nodal DOF values
                   for (auto & node : this->get_mesh().node_ptr_range())
                     for (unsigned int index=0; index<node->n_comp(sys,var); index++)
                       {
                         libmesh_assert_not_equal_to (node->dof_number(sys, var, index),
                                                      DofObject::invalid_id);
 
                         libmesh_assert_less (cnt, global_vector.size());
 
                         reordered_vector[node->dof_number(sys, var, index)] =
                           global_vector[cnt++];
                       }
 
                   // Then reorder the element DOF values
                   for (auto & elem : this->get_mesh().active_element_ptr_range())
                     for (unsigned int index=0; index<elem->n_comp(sys,var); index++)
                       {
                         libmesh_assert_not_equal_to (elem->dof_number(sys, var, index),
                                                      DofObject::invalid_id);
 
                         libmesh_assert_less (cnt, global_vector.size());
 
                         reordered_vector[elem->dof_number(sys, var, index)] =
                           global_vector[cnt++];
                       }
                 }
 
               // use the overloaded operator=(std::vector) to assign the values
               *(pos->second) = reordered_vector;
             }
 
           // If we've got vectors then we need to be iterating through
           // those too
           if (pos != this->_vectors.end())
             ++pos;
         }
     } // end if (_additional_data_written)
 }

◆ read_parallel_data() [1/2]

template<typename InValType >

void libMesh::System::read_parallel_data	(	Xdr &	io,
		const bool	read_additional_data
	)

inherited

Reads additional data, namely vectors, for this System. This method may safely be called on a distributed-memory mesh. This method will read an individual file for each processor in the simulation where the local solution components for that processor are stored.

This method implements the output of the vectors contained in this System object, embedded in the output of an EquationSystems<T_sys>.

9.) The global solution vector, re-ordered to be node-major (More on this later.)

for each additional vector in the object

10.) The global additional vector, re-ordered to be node-major (More on this later.)

Note that the actual IO is handled through the Xdr class (to be renamed later?) which provides a uniform interface to both the XDR (eXternal Data Representation) interface and standard ASCII output. Thus this one section of code will read XDR or ASCII files with no changes.

Definition at line 493 of file system_io.C.

References libMesh::System::_additional_data_written, libMesh::System::_vectors, libMesh::System::_written_var_indices, libMesh::Xdr::data(), libMesh::FEType::family, libMesh::System::get_dof_map(), libMesh::System::get_mesh(), libMesh::DofObject::invalid_id, libMesh::Xdr::is_open(), libMesh::ParallelObject::n_processors(), libMesh::System::n_vars(), libMesh::System::number(), libMesh::ParallelObject::processor_id(), libMesh::Xdr::reading(), libMesh::SCALAR, libMesh::DofMap::SCALAR_dof_indices(), libMesh::System::solution, libMesh::Variable::type(), and libMesh::System::variable().

 {
   // PerfLog pl("IO Performance",false);
   // pl.push("read_parallel_data");
   dof_id_type total_read_size = 0;
 
   libmesh_assert (io.reading());
   libmesh_assert (io.is_open());
 
   // build the ordered nodes and element maps.
   // when writing/reading parallel files we need to iterate
   // over our nodes/elements in order of increasing global id().
   // however, this is not guaranteed to be ordering we obtain
   // by using the node_iterators/element_iterators directly.
   // so build a set, sorted by id(), that provides the ordering.
   // further, for memory economy build the set but then transfer
   // its contents to vectors, which will be sorted.
   std::vector<const DofObject *> ordered_nodes, ordered_elements;
   {
     std::set<const DofObject *, CompareDofObjectsByID>
       ordered_nodes_set (this->get_mesh().local_nodes_begin(),
                          this->get_mesh().local_nodes_end());
 
     ordered_nodes.insert(ordered_nodes.end(),
                          ordered_nodes_set.begin(),
                          ordered_nodes_set.end());
   }
   {
     std::set<const DofObject *, CompareDofObjectsByID>
       ordered_elements_set (this->get_mesh().local_elements_begin(),
                             this->get_mesh().local_elements_end());
 
     ordered_elements.insert(ordered_elements.end(),
                             ordered_elements_set.begin(),
                             ordered_elements_set.end());
   }
 
   //  std::vector<Number> io_buffer;
   std::vector<InValType> io_buffer;
 
   // 9.)
   //
   // Actually read the solution components
   // for the ith system to disk
   io.data(io_buffer);
 
   total_read_size += cast_int<dof_id_type>(io_buffer.size());
 
   const unsigned int sys_num = this->number();
   const unsigned int nv      = cast_int<unsigned int>
     (this->_written_var_indices.size());
   libmesh_assert_less_equal (nv, this->n_vars());
 
   dof_id_type cnt=0;
 
   // Loop over each non-SCALAR variable and each node, and read out the value.
   for (unsigned int data_var=0; data_var<nv; data_var++)
     {
       const unsigned int var = _written_var_indices[data_var];
       if (this->variable(var).type().family != SCALAR)
         {
           // First read the node DOF values
           for (const auto & node : ordered_nodes)
             for (unsigned int comp=0; comp<node->n_comp(sys_num, var); comp++)
               {
                 libmesh_assert_not_equal_to (node->dof_number(sys_num, var, comp),
                                              DofObject::invalid_id);
                 libmesh_assert_less (cnt, io_buffer.size());
                 this->solution->set(node->dof_number(sys_num, var, comp), io_buffer[cnt++]);
               }
 
           // Then read the element DOF values
           for (const auto & elem : ordered_elements)
             for (unsigned int comp=0; comp<elem->n_comp(sys_num, var); comp++)
               {
                 libmesh_assert_not_equal_to (elem->dof_number(sys_num, var, comp),
                                              DofObject::invalid_id);
                 libmesh_assert_less (cnt, io_buffer.size());
                 this->solution->set(elem->dof_number(sys_num, var, comp), io_buffer[cnt++]);
               }
         }
     }
 
   // Finally, read the SCALAR variables on the last processor
   for (unsigned int data_var=0; data_var<nv; data_var++)
     {
       const unsigned int var = _written_var_indices[data_var];
       if (this->variable(var).type().family == SCALAR)
         {
           if (this->processor_id() == (this->n_processors()-1))
             {
               const DofMap & dof_map = this->get_dof_map();
               std::vector<dof_id_type> SCALAR_dofs;
               dof_map.SCALAR_dof_indices(SCALAR_dofs, var);
 
               for (std::size_t i=0; i<SCALAR_dofs.size(); i++)
                 this->solution->set(SCALAR_dofs[i], io_buffer[cnt++]);
             }
         }
     }
 
   // And we're done setting solution entries
   this->solution->close();
 
   // For each additional vector, simply go through the list.
   // ONLY attempt to do this IF additional data was actually
   // written to the file for this system (controlled by the
   // _additional_data_written flag).
   if (this->_additional_data_written)
     {
       const std::size_t nvecs = this->_vectors.size();
 
       // If the number of additional vectors written is non-zero, and
       // the number of additional vectors we have is non-zero, and
       // they don't match, then something is wrong and we can't be
       // sure we're reading data into the correct places.
       if (read_additional_data && nvecs &&
           nvecs != this->_additional_data_written)
         libmesh_error_msg
           ("Additional vectors in file do not match system");
 
       std::map<std::string, NumericVector<Number> *>::const_iterator
         pos = _vectors.begin();
 
       for (std::size_t i = 0; i != this->_additional_data_written; ++i)
         {
           cnt=0;
           io_buffer.clear();
 
           // 10.)
           //
           // Actually read the additional vector components
           // for the ith system from disk
           io.data(io_buffer);
 
           total_read_size += cast_int<dof_id_type>(io_buffer.size());
 
           // If read_additional_data==true and we have additional vectors,
           // then we will keep this vector data; otherwise we are going to
           // throw it away.
           if (read_additional_data && nvecs)
             {
               // Loop over each non-SCALAR variable and each node, and read out the value.
               for (unsigned int data_var=0; data_var<nv; data_var++)
                 {
                   const unsigned int var = _written_var_indices[data_var];
                   if (this->variable(var).type().family != SCALAR)
                     {
                       // First read the node DOF values
                       for (const auto & node : ordered_nodes)
                         for (unsigned int comp=0; comp<node->n_comp(sys_num, var); comp++)
                           {
                             libmesh_assert_not_equal_to (node->dof_number(sys_num, var, comp),
                                                          DofObject::invalid_id);
                             libmesh_assert_less (cnt, io_buffer.size());
                             pos->second->set(node->dof_number(sys_num, var, comp), io_buffer[cnt++]);
                           }
 
                       // Then read the element DOF values
                       for (const auto & elem : ordered_elements)
                         for (unsigned int comp=0; comp<elem->n_comp(sys_num, var); comp++)
                           {
                             libmesh_assert_not_equal_to (elem->dof_number(sys_num, var, comp),
                                                          DofObject::invalid_id);
                             libmesh_assert_less (cnt, io_buffer.size());
                             pos->second->set(elem->dof_number(sys_num, var, comp), io_buffer[cnt++]);
                           }
                     }
                 }
 
               // Finally, read the SCALAR variables on the last processor
               for (unsigned int data_var=0; data_var<nv; data_var++)
                 {
                   const unsigned int var = _written_var_indices[data_var];
                   if (this->variable(var).type().family == SCALAR)
                     {
                       if (this->processor_id() == (this->n_processors()-1))
                         {
                           const DofMap & dof_map = this->get_dof_map();
                           std::vector<dof_id_type> SCALAR_dofs;
                           dof_map.SCALAR_dof_indices(SCALAR_dofs, var);
 
                           for (std::size_t sd=0; sd<SCALAR_dofs.size(); sd++)
                             pos->second->set(SCALAR_dofs[sd], io_buffer[cnt++]);
                         }
                     }
                 }
 
               // And we're done setting entries for this variable
               pos->second->close();
             }
 
           // If we've got vectors then we need to be iterating through
           // those too
           if (pos != this->_vectors.end())
             ++pos;
         }
     }
 
   // const Real
   //   dt   = pl.get_elapsed_time(),
   //   rate = total_read_size*sizeof(Number)/dt;
 
   // libMesh::err << "Read " << total_read_size << " \"Number\" values\n"
   //     << " Elapsed time = " << dt << '\n'
   //     << " Rate = " << rate/1.e6 << "(MB/sec)\n\n";
 
   // pl.pop("read_parallel_data");
 }

◆ read_parallel_data() [2/2]

template void libMesh::System::read_parallel_data< Real >	(	Xdr &	io,
		const bool	read_additional_data
	)

inlineinherited

Non-templated version for backward compatibility.

Reads additional data, namely vectors, for this System. This method may safely be called on a distributed-memory mesh. This method will read an individual file for each processor in the simulation where the local solution components for that processor are stored.

Definition at line 1299 of file system.h.

1301 { read_parallel_data<Number>(io, read_additional_data); }

◆ read_parameter_data_from_files()

void libMesh::RBParametrized::read_parameter_data_from_files	(	const std::string &	continuous_param_file_name,
		const std::string &	discrete_param_file_name,
		const bool	read_binary_data
	)

inherited

Read in the parameter ranges from files.

◆ read_riesz_representors_from_files()

virtual void libMesh::RBConstruction::read_riesz_representors_from_files	(	const std::string &	riesz_representors_dir,
		const bool	write_binary_residual_representors
	)

virtual

Read in all the Riesz representor data from files. directory_name specifies which directory to read from. io_flag specifies whether we read in all data, or only a basis (in)dependent subset.

Reimplemented in libMesh::TransientRBConstruction.

◆ read_serialized_data() [1/2]

template<typename InValType >

void libMesh::System::read_serialized_data	(	Xdr &	io,
		const bool	read_additional_data = `true`
	)

inherited

Reads additional data, namely vectors, for this System. This method may safely be called on a distributed-memory mesh.

Definition at line 725 of file system_io.C.

References libMesh::System::_additional_data_written, libMesh::System::_vectors, libMesh::ParallelObject::processor_id(), and libMesh::System::solution.

 {
   // This method implements the input of the vectors
   // contained in this System object, embedded in the
   // output of an EquationSystems<T_sys>.
   //
   //   10.) The global solution vector, re-ordered to be node-major
   //       (More on this later.)
   //
   //      for each additional vector in the object
   //
   //      11.) The global additional vector, re-ordered to be
   //          node-major (More on this later.)
   parallel_object_only();
   std::string comment;
 
   // PerfLog pl("IO Performance",false);
   // pl.push("read_serialized_data");
   // std::size_t total_read_size = 0;
 
   // 10.)
   // Read the global solution vector
   {
     // total_read_size +=
     this->read_serialized_vector<InValType>(io, this->solution.get());
 
     // get the comment
     if (this->processor_id() == 0)
       io.comment (comment);
   }
 
   // 11.)
   // Only read additional vectors if data is available, and only use
   // that data to fill our vectors if the user requested it.
   if (this->_additional_data_written)
     {
       const std::size_t nvecs = this->_vectors.size();
 
       // If the number of additional vectors written is non-zero, and
       // the number of additional vectors we have is non-zero, and
       // they don't match, then we can't read additional vectors
       // and be sure we're reading data into the correct places.
       if (read_additional_data && nvecs &&
           nvecs != this->_additional_data_written)
         libmesh_error_msg
           ("Additional vectors in file do not match system");
 
       std::map<std::string, NumericVector<Number> *>::const_iterator
         pos = _vectors.begin();
 
       for (std::size_t i = 0; i != this->_additional_data_written; ++i)
         {
           // Read data, but only put it into a vector if we've been
           // asked to and if we have a corresponding vector to read.
 
           // total_read_size +=
           this->read_serialized_vector<InValType>
             (io, (read_additional_data && nvecs) ? pos->second : nullptr);
 
           // get the comment
           if (this->processor_id() == 0)
             io.comment (comment);
 
 
           // If we've got vectors then we need to be iterating through
           // those too
           if (pos != this->_vectors.end())
             ++pos;
         }
     }
 
   // const Real
   //   dt   = pl.get_elapsed_time(),
   //   rate = total_read_size*sizeof(Number)/dt;
 
   // libMesh::out << "Read " << total_read_size << " \"Number\" values\n"
   //     << " Elapsed time = " << dt << '\n'
   //     << " Rate = " << rate/1.e6 << "(MB/sec)\n\n";
 
   // pl.pop("read_serialized_data");
 }

◆ read_serialized_data() [2/2]

template void libMesh::System::read_serialized_data< Real >	(	Xdr &	io,
		const bool	read_additional_data = `true`
	)

inlineinherited

Non-templated version for backward compatibility.

Reads additional data, namely vectors, for this System. This method may safely be called on a distributed-memory mesh.

Definition at line 1257 of file system.h.

1259 { read_serialized_data<Number>(io, read_additional_data); }

◆ read_serialized_vectors() [1/2]

template<typename InValType >

std::size_t libMesh::System::read_serialized_vectors	(	Xdr &	io,
		const std::vector< NumericVector< Number > *> &	vectors
	)		const

inherited

Read a number of identically distributed vectors. This method allows for optimization for the multiple vector case by only communicating the metadata once.

Definition at line 2203 of file system_io.C.

References libMesh::Xdr::data(), libMesh::FEType::family, libMesh::System::get_mesh(), libMesh::MeshBase::n_elem(), libMesh::MeshTools::n_elem(), n_nodes, libMesh::MeshBase::n_nodes(), libMesh::System::n_vars(), libMesh::ParallelObject::processor_id(), libMesh::System::read_SCALAR_dofs(), libMesh::System::read_serialized_blocked_dof_objects(), libMesh::Xdr::reading(), libMesh::SCALAR, libMesh::Variable::type(), and libMesh::System::variable().

 {
   parallel_object_only();
 
   // Error checking
   // #ifndef NDEBUG
   //   // In parallel we better be reading a parallel vector -- if not
   //   // we will not set all of its components below!!
   //   if (this->n_processors() > 1)
   //     {
   //       libmesh_assert (vec.type() == PARALLEL ||
   //       vec.type() == GHOSTED);
   //     }
   // #endif
 
   libmesh_assert (io.reading());
 
   if (this->processor_id() == 0)
     {
       // sizes
       unsigned int num_vecs=0;
       dof_id_type vector_length=0;
 
       // Get the number of vectors
       io.data(num_vecs);
       // Get the buffer size
       io.data(vector_length);
 
       libmesh_assert_equal_to (num_vecs, vectors.size());
 
       if (num_vecs != 0)
         {
           libmesh_assert_not_equal_to (vectors[0], 0);
           libmesh_assert_equal_to     (vectors[0]->size(), vector_length);
         }
     }
 
   // no need to actually communicate these.
   // this->comm().broadcast(num_vecs);
   // this->comm().broadcast(vector_length);
 
   // Cache these - they are not free!
   const dof_id_type
     n_nodes = this->get_mesh().n_nodes(),
     n_elem  = this->get_mesh().n_elem();
 
   std::size_t read_length = 0;
 
   //---------------------------------
   // Collect the values for all nodes
   read_length +=
     this->read_serialized_blocked_dof_objects (n_nodes,
                                                this->get_mesh().local_nodes_begin(),
                                                this->get_mesh().local_nodes_end(),
                                                InValType(),
                                                io,
                                                vectors);
 
   //------------------------------------
   // Collect the values for all elements
   read_length +=
     this->read_serialized_blocked_dof_objects (n_elem,
                                                this->get_mesh().local_elements_begin(),
                                                this->get_mesh().local_elements_end(),
                                                InValType(),
                                                io,
                                                vectors);
 
   //-------------------------------------------
   // Finally loop over all the SCALAR variables
   for (std::size_t vec=0; vec<vectors.size(); vec++)
     for (unsigned int var=0; var<this->n_vars(); var++)
       if (this->variable(var).type().family == SCALAR)
         {
           libmesh_assert_not_equal_to (vectors[vec], 0);
 
           read_length +=
             this->read_SCALAR_dofs (var, io, vectors[vec]);
         }
 
   //---------------------------------------
   // last step - must close all the vectors
   for (std::size_t vec=0; vec<vectors.size(); vec++)
     {
       libmesh_assert_not_equal_to (vectors[vec], 0);
       vectors[vec]->close();
     }
 
   return read_length;
 }

◆ read_serialized_vectors() [2/2]

template std::size_t libMesh::System::read_serialized_vectors< Real >	(	Xdr &	io,
		const std::vector< NumericVector< Number > *> &	vectors
	)		const

inlineinherited

Non-templated version for backward compatibility.

Read a number of identically distributed vectors. This method allows for optimization for the multiple vector case by only communicating the metadata once.

Definition at line 1277 of file system.h.

1279 { return read_serialized_vectors<Number>(io, vectors); }

◆ recompute_all_residual_terms()

virtual void libMesh::RBConstruction::recompute_all_residual_terms ( const bool compute_inner_products = true )

virtual

This function computes all of the residual representors, can be useful when restarting a basis training computation. If compute_inner_products is false, we just compute the residual Riesz representors, whereas if true, we also compute all the corresponding inner product terms.

◆ reinit()

void libMesh::LinearImplicitSystem::reinit ( )

overridevirtualinherited

Reinitializes the member data fields associated with the system, so that, e.g., assemble() may be used.

Reimplemented from libMesh::ImplicitSystem.

Reimplemented in libMesh::NewmarkSystem.

Definition at line 85 of file linear_implicit_system.C.

References libMesh::LinearImplicitSystem::linear_solver, and libMesh::ImplicitSystem::reinit().

 {
   // re-initialize the linear solver interface
   linear_solver->clear();
 
   // initialize parent data
   Parent::reinit();
 }

◆ reinit_constraints()

void libMesh::System::reinit_constraints ( )

virtualinherited

Reinitializes the constraints for this system.

Definition at line 397 of file system.C.

References libMesh::System::_mesh, libMesh::DofMap::create_dof_constraints(), libMesh::System::get_dof_map(), libMesh::DofMap::prepare_send_list(), libMesh::DofMap::process_constraints(), libMesh::System::time, and libMesh::System::user_constrain().

Referenced by libMesh::EquationSystems::allgather(), libMesh::System::init_data(), and libMesh::EquationSystems::reinit_solutions().

 {
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
   get_dof_map().create_dof_constraints(_mesh, this->time);
   user_constrain();
   get_dof_map().process_constraints(_mesh);
 #endif
   get_dof_map().prepare_send_list();
 }

◆ release_linear_solver()

void libMesh::LinearImplicitSystem::release_linear_solver ( LinearSolver< Number > * ) const

overridevirtualinherited

Releases a pointer to a linear solver acquired by this->get_linear_solver()

Reimplemented from libMesh::ImplicitSystem.

Definition at line 360 of file linear_implicit_system.C.

361 {

362 }

◆ remove_matrix()

void libMesh::ImplicitSystem::remove_matrix ( const std::string & mat_name )

inherited

Removes the additional matrix mat_name from this system

Definition at line 222 of file implicit_system.C.

References libMesh::ImplicitSystem::_matrices.

Referenced by libMesh::ImplicitSystem::~ImplicitSystem().

 {
   matrices_iterator pos = _matrices.find (mat_name);
 
   //Return if the matrix does not exist
   if (pos == _matrices.end())
     return;
 
   delete pos->second;
 
   _matrices.erase(pos);
 }

◆ remove_vector()

void libMesh::System::remove_vector ( const std::string & vec_name )

inherited

Removes the additional vector vec_name from this system

Definition at line 699 of file system.C.

References libMesh::System::_vector_is_adjoint, libMesh::System::_vector_projections, libMesh::System::_vector_types, and libMesh::System::_vectors.

 {
   vectors_iterator pos = _vectors.find(vec_name);
 
   //Return if the vector does not exist
   if (pos == _vectors.end())
     return;
 
   delete pos->second;
 
   _vectors.erase(pos);
 
   _vector_projections.erase(vec_name);
   _vector_is_adjoint.erase(vec_name);
   _vector_types.erase(vec_name);
 }

◆ request_matrix() [1/2]

const SparseMatrix< Number > * libMesh::ImplicitSystem::request_matrix ( const std::string & mat_name ) const

inherited

Returns: A const pointer to this system's additional matrix named mat_name, or nullptr if no matrix by that name exists.

Definition at line 237 of file implicit_system.C.

References libMesh::ImplicitSystem::_matrices.

Referenced by libMesh::ImplicitSystem::sensitivity_solve(), libMesh::NewtonSolver::solve(), and libMesh::LinearImplicitSystem::solve().

 {
   // Make sure the matrix exists
   const_matrices_iterator pos = _matrices.find (mat_name);
 
   if (pos == _matrices.end())
     return nullptr;
 
   return pos->second;
 }

◆ request_matrix() [2/2]

SparseMatrix< Number > * libMesh::ImplicitSystem::request_matrix ( const std::string & mat_name )

inherited

Returns: A writable pointer to this system's additional matrix named mat_name, or nullptr if no matrix by that name exists.

Definition at line 250 of file implicit_system.C.

References libMesh::ImplicitSystem::_matrices.

 {
   // Make sure the matrix exists
   matrices_iterator pos = _matrices.find (mat_name);
 
   if (pos == _matrices.end())
     return nullptr;
 
   return pos->second;
 }

◆ request_vector() [1/4]

const NumericVector< Number > * libMesh::System::request_vector ( const std::string & vec_name ) const

inherited

Returns: A const pointer to the vector if this System has a vector associated with the given name, nullptr otherwise.

Definition at line 716 of file system.C.

References libMesh::System::_vectors.

Referenced by libMesh::UniformRefinementEstimator::_estimate_error().

 {
   const_vectors_iterator pos = _vectors.find(vec_name);
 
   if (pos == _vectors.end())
     return nullptr;
 
   return pos->second;
 }

◆ request_vector() [2/4]

NumericVector< Number > * libMesh::System::request_vector ( const std::string & vec_name )

inherited

Returns: A pointer to the vector if this System has a vector associated with the given name, nullptr otherwise.

Definition at line 728 of file system.C.

References libMesh::System::_vectors.

 {
   vectors_iterator pos = _vectors.find(vec_name);
 
   if (pos == _vectors.end())
     return nullptr;
 
   return pos->second;
 }

◆ request_vector() [3/4]

const NumericVector< Number > * libMesh::System::request_vector ( const unsigned int vec_num ) const

inherited

Returns: A const pointer to this system's additional vector number vec_num (where the vectors are counted starting with 0), or nullptr if the system has no such vector.

Definition at line 740 of file system.C.

References libMesh::System::vectors_begin(), and libMesh::System::vectors_end().

 {
   const_vectors_iterator v = vectors_begin();
   const_vectors_iterator v_end = vectors_end();
   unsigned int num = 0;
   while ((num<vec_num) && (v!=v_end))
     {
       num++;
       ++v;
     }
   if (v==v_end)
     return nullptr;
   return v->second;
 }

◆ request_vector() [4/4]

NumericVector< Number > * libMesh::System::request_vector ( const unsigned int vec_num )

inherited

Returns: A writable pointer to this system's additional vector number vec_num (where the vectors are counted starting with 0), or nullptr if the system has no such vector.

Definition at line 757 of file system.C.

References libMesh::System::vectors_begin(), and libMesh::System::vectors_end().

 {
   vectors_iterator v = vectors_begin();
   vectors_iterator v_end = vectors_end();
   unsigned int num = 0;
   while ((num<vec_num) && (v!=v_end))
     {
       num++;
       ++v;
     }
   if (v==v_end)
     return nullptr;
   return v->second;
 }

◆ restrict_solve_to()

void libMesh::LinearImplicitSystem::restrict_solve_to	(	const SystemSubset *	subset,
		const SubsetSolveMode	subset_solve_mode = `SUBSET_ZERO`
	)

overridevirtualinherited

After calling this method, any solve will be limited to the given subset. To disable this mode, call this method with subset being a nullptr.

Reimplemented from libMesh::System.

Definition at line 96 of file linear_implicit_system.C.

References libMesh::LinearImplicitSystem::_subset, libMesh::LinearImplicitSystem::_subset_solve_mode, and libMesh::SystemSubset::get_system().

Referenced by libMesh::LinearImplicitSystem::clear().

 {
   _subset = subset;
   _subset_solve_mode = subset_solve_mode;
 
   if (subset != nullptr)
     libmesh_assert_equal_to (&subset->get_system(), this);
 }

◆ restrict_vectors()

void libMesh::System::restrict_vectors ( )

virtualinherited

Restrict vectors after the mesh has coarsened

Definition at line 324 of file system.C.

References libMesh::System::_dof_map, libMesh::System::_solution_projection, libMesh::System::_vector_projections, libMesh::System::_vector_types, libMesh::System::_vectors, libMesh::System::current_local_solution, libMesh::GHOSTED, libMesh::System::n_dofs(), libMesh::System::n_local_dofs(), libMesh::PARALLEL, libMesh::System::project_vector(), libMesh::System::solution, and libMesh::System::vector_is_adjoint().

Referenced by libMesh::System::prolong_vectors(), and libMesh::EquationSystems::reinit_solutions().

 {
 #ifdef LIBMESH_ENABLE_AMR
   // Restrict the _vectors on the coarsened cells
   for (auto & pr : _vectors)
     {
       NumericVector<Number> * v = pr.second;
 
       if (_vector_projections[pr.first])
         {
           this->project_vector (*v, this->vector_is_adjoint(pr.first));
         }
       else
         {
           ParallelType type = _vector_types[pr.first];
 
           if (type == GHOSTED)
             {
 #ifdef LIBMESH_ENABLE_GHOSTED
               pr.second->init (this->n_dofs(), this->n_local_dofs(),
                                _dof_map->get_send_list(), false,
                                GHOSTED);
 #else
               libmesh_error_msg("Cannot initialize ghosted vectors when they are not enabled.");
 #endif
             }
           else
             pr.second->init (this->n_dofs(), this->n_local_dofs(), false, type);
         }
     }
 
   const std::vector<dof_id_type> & send_list = _dof_map->get_send_list ();
 
   // Restrict the solution on the coarsened cells
   if (_solution_projection)
     this->project_vector (*solution);
   // Or at least make sure the solution vector is the correct size
   else
     solution->init (this->n_dofs(), this->n_local_dofs(), true, PARALLEL);
 
 #ifdef LIBMESH_ENABLE_GHOSTED
   current_local_solution->init(this->n_dofs(),
                                this->n_local_dofs(), send_list,
                                false, GHOSTED);
 #else
   current_local_solution->init(this->n_dofs());
 #endif
 
   if (_solution_projection)
     solution->localize (*current_local_solution, send_list);
 
 #endif // LIBMESH_ENABLE_AMR
 }

◆ sensitivity_solve()

std::pair< unsigned int, Real > libMesh::ImplicitSystem::sensitivity_solve ( const ParameterVector & parameters )

overridevirtualinherited

Assembles & solves the linear system(s) (dR/du)*u_p = -dR/dp, for those parameters contained within parameters.

Returns: A pair with the total number of linear iterations performed and the (sum of the) final residual norms

Reimplemented from libMesh::System.

Definition at line 314 of file implicit_system.C.

References libMesh::System::add_sensitivity_solution(), libMesh::System::assemble_before_solve, libMesh::ImplicitSystem::assemble_residual_derivatives(), libMesh::ImplicitSystem::assembly(), libMesh::SparseMatrix< T >::close(), libMesh::DofMap::enforce_constraints_exactly(), libMesh::System::get_dof_map(), libMesh::ImplicitSystem::get_linear_solve_parameters(), libMesh::ImplicitSystem::get_linear_solver(), libMesh::System::get_sensitivity_rhs(), libMesh::System::get_sensitivity_solution(), libMesh::ImplicitSystem::matrix, libMesh::ImplicitSystem::release_linear_solver(), libMesh::ImplicitSystem::request_matrix(), libMesh::ParameterVector::size(), and libMesh::LinearSolver< T >::solve().

Referenced by libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity(), and libMesh::ImplicitSystem::qoi_parameter_hessian().

 {
   // Log how long the linear solve takes.
   LOG_SCOPE("sensitivity_solve()", "ImplicitSystem");
 
   // The forward system should now already be solved.
   // Now assemble the corresponding sensitivity system.
 
   if (this->assemble_before_solve)
     {
       // Build the Jacobian
       this->assembly(false, true);
       this->matrix->close();
 
       // Reset and build the RHS from the residual derivatives
       this->assemble_residual_derivatives(parameters);
     }
 
   // The sensitivity problem is linear
   LinearSolver<Number> * linear_solver = this->get_linear_solver();
 
   // Our iteration counts and residuals will be sums of the individual
   // results
   std::pair<unsigned int, Real> solver_params =
     this->get_linear_solve_parameters();
   std::pair<unsigned int, Real> totalrval = std::make_pair(0,0.0);
 
   // Solve the linear system.
   SparseMatrix<Number> * pc = this->request_matrix("Preconditioner");
   for (auto p : IntRange<unsigned int>(0, parameters.size()))
     {
       std::pair<unsigned int, Real> rval =
         linear_solver->solve (*matrix, pc,
                               this->add_sensitivity_solution(p),
                               this->get_sensitivity_rhs(p),
                               solver_params.second,
                               solver_params.first);
 
       totalrval.first  += rval.first;
       totalrval.second += rval.second;
     }
 
   // The linear solver may not have fit our constraints exactly
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
   for (auto p : IntRange<unsigned int>(0, parameters.size()))
     this->get_dof_map().enforce_constraints_exactly
       (*this, &this->get_sensitivity_solution(p),
        /* homogeneous = */ true);
 #endif
 
   this->release_linear_solver(linear_solver);
 
   return totalrval;
 }

◆ set_abs_training_tolerance()

void libMesh::RBConstruction::set_abs_training_tolerance ( Real new_training_tolerance )

inline

Get/set the absolute tolerance for the basis training.

Definition at line 191 of file rb_construction.h.

References abs_training_tolerance.

192 {this->abs_training_tolerance = new_training_tolerance; }

libMesh::RBConstruction::abs_training_tolerance

Real abs_training_tolerance

Definition: rb_construction.h:802

◆ set_adjoint_already_solved()

void libMesh::System::set_adjoint_already_solved ( bool setting )

inlineinherited

Setter for the adjoint_already_solved boolean

Definition at line 394 of file system.h.

References libMesh::System::adjoint_already_solved.

395 { adjoint_already_solved = setting;}

libMesh::System::adjoint_already_solved

bool adjoint_already_solved

Definition: system.h:2003

◆ set_basic_system_only()

void libMesh::System::set_basic_system_only ( )

inlineinherited

Sets the system to be "basic only": i.e. advanced system components such as ImplicitSystem matrices may not be initialized. This is useful for efficiency in certain utility programs that never use System::solve(). This method must be called after the System or derived class is created but before it is initialized; e.g. from within EquationSystems::read()

Definition at line 2097 of file system.h.

References libMesh::System::_basic_system_only.

Referenced by libMesh::EquationSystems::_read_impl().

 {
   _basic_system_only = true;
 }

◆ set_context_solution_vec()

virtual void libMesh::RBConstruction::set_context_solution_vec ( NumericVector< Number > & vec )

protectedvirtual

Set current_local_solution = vec so that we can access vec from FEMContext during assembly. Override in subclasses if different behavior is required.

◆ set_convergence_assertion_flag()

void libMesh::RBConstruction::set_convergence_assertion_flag ( bool flag )

Setter for the flag determining if convergence should be checked after each solve.

◆ set_deterministic_training_parameter_name()

void libMesh::RBConstructionBase< LinearImplicitSystem >::set_deterministic_training_parameter_name ( const std::string & name )

inherited

In some cases we only want to allow discrete parameter values, instead of parameters that may take any value in a specified interval. Here we provide a method to set the d Set the discrete values for parameter mu that are allowed in the training set. This must be called before the training set is generated. Set the name of the parameter that we will generate deterministic training parameters for. Defaults to "NONE".

◆ set_deterministic_training_parameter_repeats()

void libMesh::RBConstructionBase< LinearImplicitSystem >::set_deterministic_training_parameter_repeats ( unsigned int repeats )

inherited

Set the number of times each sample of the deterministic training parameter is repeated.

◆ set_inner_product_assembly()

void libMesh::RBConstruction::set_inner_product_assembly ( ElemAssembly & inner_product_assembly_in )

Set the rb_assembly_expansion object.

◆ set_Nmax()

virtual void libMesh::RBConstruction::set_Nmax ( unsigned int Nmax )

virtual

◆ set_normalize_rb_bound_in_greedy()

void libMesh::RBConstruction::set_normalize_rb_bound_in_greedy ( bool normalize_rb_bound_in_greedy_in )

inline

Get/set the boolean to indicate if we normalize the RB error in the greedy.

Definition at line 198 of file rb_construction.h.

References normalize_rb_bound_in_greedy.

199 {this->normalize_rb_bound_in_greedy = normalize_rb_bound_in_greedy_in; }

libMesh::RBConstruction::normalize_rb_bound_in_greedy

bool normalize_rb_bound_in_greedy

Definition: rb_construction.h:808

◆ set_parameters()

void libMesh::RBParametrized::set_parameters ( const RBParameters & params )

inherited

Set the current parameters to params

◆ set_params_from_training_set()

void libMesh::RBConstructionBase< LinearImplicitSystem >::set_params_from_training_set ( unsigned int index )

protectedinherited

Set parameters to the RBParameters stored in index index of the training set.

◆ set_params_from_training_set_and_broadcast()

virtual void libMesh::RBConstructionBase< LinearImplicitSystem >::set_params_from_training_set_and_broadcast ( unsigned int index )

protectedvirtualinherited

Load the specified training parameter and then broadcast to all processors.

◆ set_quiet_mode()

void libMesh::RBConstructionBase< LinearImplicitSystem >::set_quiet_mode ( bool quiet_mode_in )

inlineinherited

Set the quiet_mode flag. If quiet == false then we print out a lot of extra information during the Offline stage.

Definition at line 92 of file rb_construction_base.h.

93 { this->quiet_mode = quiet_mode_in; }

libMesh::RBConstructionBase< LinearImplicitSystem >::quiet_mode

bool quiet_mode

Definition: rb_construction_base.h:239

◆ set_rb_assembly_expansion()

void libMesh::RBConstruction::set_rb_assembly_expansion ( RBAssemblyExpansion & rb_assembly_expansion_in )

Set the rb_assembly_expansion object.

◆ set_rb_construction_parameters()

void libMesh::RBConstruction::set_rb_construction_parameters	(	unsigned int	n_training_samples_in,
		bool	deterministic_training_in,
		unsigned int	training_parameters_random_seed_in,
		bool	quiet_mode_in,
		unsigned int	Nmax_in,
		Real	rel_training_tolerance_in,
		Real	abs_training_tolerance_in,
		bool	normalize_rb_error_bound_in_greedy_in,
		RBParameters	mu_min_in,
		RBParameters	mu_max_in,
		std::map< std::string, std::vector< Real >>	discrete_parameter_values_in,
		std::map< std::string, bool >	log_scaling
	)

Set the state of this RBConstruction object based on the arguments to this function.

◆ set_rb_evaluation()

void libMesh::RBConstruction::set_rb_evaluation ( RBEvaluation & rb_eval_in )

Set the RBEvaluation object.

◆ set_rel_training_tolerance()

void libMesh::RBConstruction::set_rel_training_tolerance ( Real new_training_tolerance )

inline

Get/set the relative tolerance for the basis training.

Definition at line 184 of file rb_construction.h.

References rel_training_tolerance.

185 {this->rel_training_tolerance = new_training_tolerance; }

libMesh::RBConstruction::rel_training_tolerance

Real rel_training_tolerance

Definition: rb_construction.h:801

◆ set_training_random_seed()

void libMesh::RBConstructionBase< LinearImplicitSystem >::set_training_random_seed ( unsigned int seed )

inherited

Set the seed that is used to randomly generate training parameters.

◆ set_vector_as_adjoint()

void libMesh::System::set_vector_as_adjoint	(	const std::string &	vec_name,
		int	qoi_num
	)

inherited

Allows one to set the QoI index controlling whether the vector identified by vec_name represents a solution from the adjoint (qoi_num >= 0) or primal (qoi_num == -1) space. This becomes significant if those spaces have differing heterogeneous Dirichlet constraints.

qoi_num == -2 can be used to indicate a vector which should not be affected by constraints during projection operations.

Definition at line 885 of file system.C.

References libMesh::System::_vector_is_adjoint.

Referenced by libMesh::System::add_adjoint_solution(), and libMesh::System::add_weighted_sensitivity_adjoint_solution().

 {
   // We reserve -1 for vectors which get primal constraints, -2 for
   // vectors which get no constraints
   libmesh_assert_greater_equal(qoi_num, -2);
   _vector_is_adjoint[vec_name] = qoi_num;
 }

◆ set_vector_preservation()

void libMesh::System::set_vector_preservation	(	const std::string &	vec_name,
		bool	preserve
	)

inherited

Allows one to set the boolean controlling whether the vector identified by vec_name should be "preserved": projected to new meshes, saved, etc.

Definition at line 867 of file system.C.

References libMesh::System::_vector_projections.

 {
   _vector_projections[vec_name] = preserve;
 }

◆ solve()

void libMesh::LinearImplicitSystem::solve ( )

overridevirtualinherited

Assembles & solves the linear system A*x=b.

Reimplemented from libMesh::ImplicitSystem.

Reimplemented in libMesh::FrequencySystem.

Definition at line 108 of file linear_implicit_system.C.

References libMesh::LinearImplicitSystem::_final_linear_residual, libMesh::LinearImplicitSystem::_n_linear_iterations, libMesh::LinearImplicitSystem::_shell_matrix, libMesh::LinearImplicitSystem::_subset, libMesh::LinearImplicitSystem::_subset_solve_mode, libMesh::LinearImplicitSystem::assemble(), libMesh::System::assemble_before_solve, libMesh::SystemSubset::dof_ids(), libMesh::Parameters::get(), libMesh::System::get_equation_systems(), libMesh::LinearImplicitSystem::linear_solver, libMesh::ImplicitSystem::matrix, libMesh::System::name(), libMesh::on_command_line(), libMesh::EquationSystems::parameters, libMesh::Real, libMesh::ImplicitSystem::request_matrix(), libMesh::ExplicitSystem::rhs, libMesh::System::solution, and libMesh::System::update().

 {
   if (this->assemble_before_solve)
     // Assemble the linear system
     this->assemble ();
 
   // Get a reference to the EquationSystems
   const EquationSystems & es =
     this->get_equation_systems();
 
   // If the linear solver hasn't been initialized, we do so here.
   if (libMesh::on_command_line("--solver-system-names"))
     linear_solver->init((this->name()+"_").c_str());
   else
     linear_solver->init();
 
   // Get the user-specified linear solver tolerance
   const Real tol            =
     es.parameters.get<Real>("linear solver tolerance");
 
   // Get the user-specified maximum # of linear solver iterations
   const unsigned int maxits =
     es.parameters.get<unsigned int>("linear solver maximum iterations");
 
   if (_subset != nullptr)
     linear_solver->restrict_solve_to(&_subset->dof_ids(),_subset_solve_mode);
 
   // Solve the linear system.  Several cases:
   std::pair<unsigned int, Real> rval = std::make_pair(0,0.0);
   if (_shell_matrix)
     // 1.) Shell matrix with or without user-supplied preconditioner.
     rval = linear_solver->solve(*_shell_matrix, this->request_matrix("Preconditioner"), *solution, *rhs, tol, maxits);
   else
     // 2.) No shell matrix, with or without user-supplied preconditioner
     rval = linear_solver->solve (*matrix, this->request_matrix("Preconditioner"), *solution, *rhs, tol, maxits);
 
   if (_subset != nullptr)
     linear_solver->restrict_solve_to(nullptr);
 
   // Store the number of linear iterations required to
   // solve and the final residual.
   _n_linear_iterations   = rval.first;
   _final_linear_residual = rval.second;
 
   // Update the system after the solve
   this->update();
 }

◆ solve_for_matrix_and_rhs()

virtual void libMesh::RBConstruction::solve_for_matrix_and_rhs	(	LinearSolver< Number > &	input_solver,
		SparseMatrix< Number > &	input_matrix,
		NumericVector< Number > &	input_rhs
	)

virtual

Assembles & solves the linear system A*x=b for the specified matrix input_matrix and right-hand side rhs.

◆ system()

sys_type& libMesh::RBConstruction::system ( )

inline

Returns: A reference to *this.

Definition at line 117 of file rb_construction.h.

117 { return *this; }

◆ system_type()

virtual std::string libMesh::RBConstruction::system_type ( ) const

overridevirtual

Returns: A string indicating the type of the system.

Reimplemented from libMesh::LinearImplicitSystem.

Reimplemented in libMesh::TransientSystem< RBConstruction >.

◆ train_reduced_basis()

virtual Real libMesh::RBConstruction::train_reduced_basis ( const bool resize_rb_eval_data = true )

virtual

Train the reduced basis. This is the crucial function in the Offline stage: it generates the reduced basis using the "Greedy algorithm." Each stage of the Greedy algorithm involves solving the reduced basis over a large training set and selecting the parameter at which the reduced basis error bound is largest, then performing a truth_solve at that parameter and enriching the reduced basis with the corresponding snapshot.

resize_rb_eval_data is a boolean flag to indicate whether or not we call rb_eval->resize_data_structures(Nmax). True by default, but we may set it to false if, for example, we are continuing from a previous training run and don't want to clobber the existing rb_eval data.

Returns: The final maximum a posteriori error bound on the training set.

Reimplemented in libMesh::RBEIMConstruction, and libMesh::TransientRBConstruction.

◆ truth_assembly()

virtual void libMesh::RBConstruction::truth_assembly ( )

protectedvirtual

Assemble the truth matrix and right-hand side for current_parameters.

Reimplemented in libMesh::TransientRBConstruction.

◆ truth_solve()

virtual Real libMesh::RBConstruction::truth_solve ( int plot_solution )

virtual

Perform a "truth" solve, i.e. solve the finite element system at at the parameters currently set in the system. This is used extensively in training the reduced basis, since "truth snapshots" are employed as basis functions.

Reimplemented in libMesh::RBEIMConstruction, and libMesh::TransientRBConstruction.

◆ update()

void libMesh::System::update ( )

virtualinherited

Update the local values to reflect the solution on neighboring processors.

Definition at line 408 of file system.C.

References libMesh::System::_dof_map, libMesh::System::current_local_solution, and libMesh::System::solution.

Referenced by libMesh::__libmesh_petsc_diff_solver_jacobian(), libMesh::__libmesh_petsc_diff_solver_residual(), libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::FEMSystem::assemble_qoi(), libMesh::FEMSystem::assemble_qoi_derivative(), libMesh::NonlinearImplicitSystem::assembly(), libMesh::EquationSystems::build_parallel_elemental_solution_vector(), libMesh::EquationSystems::build_parallel_solution_vector(), libMesh::NewmarkSolver::compute_initial_accel(), libMesh::Problem_Interface::computeF(), libMesh::Problem_Interface::computeJacobian(), libMesh::Problem_Interface::computePreconditioner(), libMesh::ExodusII_IO::copy_elemental_solution(), libMesh::ExodusII_IO::copy_nodal_solution(), libMesh::GMVIO::copy_nodal_solution(), DMlibMeshFunction(), DMlibMeshJacobian(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::CondensedEigenSystem::get_eigenpair(), libMesh::libmesh_petsc_snes_jacobian(), libMesh::libmesh_petsc_snes_residual_helper(), libMesh::NewtonSolver::line_search(), libMesh::FEMSystem::mesh_position_get(), libMesh::FEMSystem::postprocess(), libMesh::ImplicitSystem::qoi_parameter_hessian(), libMesh::NewtonSolver::solve(), libMesh::ExplicitSystem::solve(), libMesh::LinearImplicitSystem::solve(), libMesh::NonlinearImplicitSystem::solve(), and libMesh::OptimizationSystem::solve().

 {
   libmesh_assert(solution->closed());
 
   const std::vector<dof_id_type> & send_list = _dof_map->get_send_list ();
 
   // Check sizes
   libmesh_assert_equal_to (current_local_solution->size(), solution->size());
   // More processors than elements => empty send_list
   //  libmesh_assert (!send_list.empty());
   libmesh_assert_less_equal (send_list.size(), solution->size());
 
   // Create current_local_solution from solution.  This will
   // put a local copy of solution into current_local_solution.
   // Only the necessary values (specified by the send_list)
   // are copied to minimize communication
   solution->localize (*current_local_solution, send_list);
 }

◆ update_global_solution() [1/2]

void libMesh::System::update_global_solution ( std::vector< Number > & global_soln ) const

inherited

Fill the input vector global_soln so that it contains the global solution on all processors. Requires communication with all other processors.

Definition at line 642 of file system.C.

References libMesh::System::solution.

Referenced by libMesh::ExactSolution::_compute_error(), libMesh::EquationSystems::build_discontinuous_solution_vector(), and libMesh::ExactErrorEstimator::estimate_error().

 {
   global_soln.resize (solution->size());
 
   solution->localize (global_soln);
 }

◆ update_global_solution() [2/2]

void libMesh::System::update_global_solution	(	std::vector< Number > &	global_soln,
		const processor_id_type	dest_proc
	)		const

inherited

Fill the input vector global_soln so that it contains the global solution on processor dest_proc. Requires communication with all other processors.

Definition at line 651 of file system.C.

References libMesh::System::solution.

 {
   global_soln.resize        (solution->size());
 
   solution->localize_to_one (global_soln, dest_proc);
 }

◆ update_greedy_param_list()

void libMesh::RBConstruction::update_greedy_param_list ( )

protected

Update the list of Greedily chosen parameters with current_parameters.

◆ update_RB_system_matrices()

virtual void libMesh::RBConstruction::update_RB_system_matrices ( )

protectedvirtual

Compute the reduced basis matrices for the current basis.

Reimplemented in libMesh::TransientRBConstruction, and libMesh::RBEIMConstruction.

◆ update_residual_terms()

virtual void libMesh::RBConstruction::update_residual_terms ( bool compute_inner_products = true )

protectedvirtual

Compute the terms that are combined ‘online’ to determine the dual norm of the residual. By default, inner product terms are also computed, but you can turn this feature off e.g. if you are already reading in that data from files.

Reimplemented in libMesh::TransientRBConstruction.

◆ update_system()

virtual void libMesh::RBConstruction::update_system ( )

protectedvirtual

Update the system after enriching the RB space; this calls a series of functions to update the system properly.

Reimplemented in libMesh::TransientRBConstruction, and libMesh::RBEIMConstruction.

◆ user_assembly()

void libMesh::System::user_assembly ( )

virtualinherited

Calls user's attached assembly function, or is overridden by the user in derived classes.

Definition at line 1932 of file system.C.

References libMesh::System::_assemble_system_function, libMesh::System::_assemble_system_object, libMesh::System::_equation_systems, libMesh::System::Assembly::assemble(), and libMesh::System::name().

Referenced by libMesh::System::assemble().

 {
   // Call the user-provided assembly function,
   // if it was provided
   if (_assemble_system_function != nullptr)
     this->_assemble_system_function (_equation_systems, this->name());
 
   // ...or the user-provided assembly object.
   else if (_assemble_system_object != nullptr)
     this->_assemble_system_object->assemble();
 }

◆ user_constrain()

void libMesh::System::user_constrain ( )

virtualinherited

Calls user's attached constraint function, or is overridden by the user in derived classes.

Definition at line 1946 of file system.C.

References libMesh::System::_constrain_system_function, libMesh::System::_constrain_system_object, libMesh::System::_equation_systems, libMesh::System::Constraint::constrain(), and libMesh::System::name().

Referenced by libMesh::System::reinit_constraints().

 {
   // Call the user-provided constraint function,
   // if it was provided
   if (_constrain_system_function!= nullptr)
     this->_constrain_system_function(_equation_systems, this->name());
 
   // ...or the user-provided constraint object.
   else if (_constrain_system_object != nullptr)
     this->_constrain_system_object->constrain();
 }

◆ user_initialization()

void libMesh::System::user_initialization ( )

virtualinherited

Calls user's attached initialization function, or is overridden by the user in derived classes.

Definition at line 1918 of file system.C.

References libMesh::System::_equation_systems, libMesh::System::_init_system_function, libMesh::System::_init_system_object, libMesh::System::Initialization::initialize(), and libMesh::System::name().

Referenced by libMesh::System::init(), and libMesh::NewmarkSystem::initial_conditions().

 {
   // Call the user-provided initialization function,
   // if it was provided
   if (_init_system_function != nullptr)
     this->_init_system_function (_equation_systems, this->name());
 
   // ...or the user-provided initialization object.
   else if (_init_system_object != nullptr)
     this->_init_system_object->initialize();
 }

◆ user_QOI()

void libMesh::System::user_QOI ( const QoISet & qoi_indices )

virtualinherited

Calls user's attached quantity of interest function, or is overridden by the user in derived classes.

Definition at line 1960 of file system.C.

References libMesh::System::_equation_systems, libMesh::System::_qoi_evaluate_function, libMesh::System::_qoi_evaluate_object, libMesh::System::name(), and libMesh::System::QOI::qoi().

Referenced by libMesh::System::assemble_qoi().

 {
   // Call the user-provided quantity of interest function,
   // if it was provided
   if (_qoi_evaluate_function != nullptr)
     this->_qoi_evaluate_function(_equation_systems, this->name(), qoi_indices);
 
   // ...or the user-provided QOI function object.
   else if (_qoi_evaluate_object != nullptr)
     this->_qoi_evaluate_object->qoi(qoi_indices);
 }

◆ user_QOI_derivative()

void libMesh::System::user_QOI_derivative	(	const QoISet &	qoi_indices = `QoISet()`,
		bool	include_liftfunc = `true`,
		bool	apply_constraints = `true`
	)

virtualinherited

Calls user's attached quantity of interest derivative function, or is overridden by the user in derived classes.

Definition at line 1974 of file system.C.

References libMesh::System::_equation_systems, libMesh::System::_qoi_evaluate_derivative_function, libMesh::System::_qoi_evaluate_derivative_object, libMesh::System::name(), and libMesh::System::QOIDerivative::qoi_derivative().

Referenced by libMesh::System::assemble_qoi_derivative().

 {
   // Call the user-provided quantity of interest derivative,
   // if it was provided
   if (_qoi_evaluate_derivative_function != nullptr)
     this->_qoi_evaluate_derivative_function
       (_equation_systems, this->name(), qoi_indices, include_liftfunc,
        apply_constraints);
 
   // ...or the user-provided QOI derivative function object.
   else if (_qoi_evaluate_derivative_object != nullptr)
     this->_qoi_evaluate_derivative_object->qoi_derivative
       (qoi_indices, include_liftfunc, apply_constraints);
 }

◆ variable()

const Variable & libMesh::System::variable ( unsigned int var ) const

inlineinherited

Return a constant reference to Variable var.

Definition at line 2133 of file system.h.

References libMesh::System::_variables.

Referenced by libMesh::ExactSolution::_compute_error(), libMesh::PetscDMWrapper::add_dofs_to_section(), libMesh::DifferentiableSystem::add_second_order_dot_vars(), libMesh::EquationSystems::build_discontinuous_solution_vector(), libMesh::EquationSystems::build_parallel_elemental_solution_vector(), libMesh::EquationSystems::build_parallel_solution_vector(), libMesh::FirstOrderUnsteadySolver::compute_second_order_eqns(), libMesh::DifferentiableSystem::have_first_order_scalar_vars(), libMesh::DifferentiableSystem::have_second_order_scalar_vars(), libMesh::System::read_parallel_data(), libMesh::System::read_SCALAR_dofs(), libMesh::System::read_serialized_vector(), libMesh::System::read_serialized_vectors(), libMesh::PetscDMWrapper::set_point_range_in_section(), libMesh::System::write_header(), libMesh::System::write_parallel_data(), libMesh::System::write_serialized_vector(), and libMesh::System::write_serialized_vectors().

 {
   libmesh_assert_less (i, _variables.size());
 
   return _variables[i];
 }

◆ variable_group()

const VariableGroup & libMesh::System::variable_group ( unsigned int vg ) const

inlineinherited

Return a constant reference to VariableGroup vg.

Definition at line 2143 of file system.h.

References libMesh::System::_variable_groups.

Referenced by libMesh::FEMSystem::assembly(), and libMesh::System::get_info().

 {
   libmesh_assert_less (vg, _variable_groups.size());
 
   return _variable_groups[vg];
 }

◆ variable_name()

const std::string & libMesh::System::variable_name ( const unsigned int i ) const

inlineinherited

Returns: The name of variable i.

Definition at line 2153 of file system.h.

References libMesh::System::_variables.

Referenced by libMesh::System::add_variable(), libMesh::System::add_variables(), libMesh::EquationSystems::build_parallel_elemental_solution_vector(), libMesh::PetscDMWrapper::build_section(), libMesh::ExactErrorEstimator::estimate_error(), libMesh::ExactSolution::ExactSolution(), libMesh::petsc_auto_fieldsplit(), and libMesh::System::write_header().

 {
   libmesh_assert_less (i, _variables.size());
 
   return _variables[i].name();
 }

◆ variable_number()

unsigned short int libMesh::System::variable_number ( const std::string & var ) const

inherited

Returns: The variable number associated with the user-specified variable named var.

Definition at line 1243 of file system.C.

References libMesh::System::_variable_numbers, and libMesh::System::_variables.

Referenced by libMesh::ExactSolution::_compute_error(), libMesh::ExodusII_IO::copy_elemental_solution(), libMesh::ExodusII_IO::copy_nodal_solution(), libMesh::GMVIO::copy_nodal_solution(), libMesh::ExactErrorEstimator::estimate_error(), libMesh::ExactErrorEstimator::find_squared_element_error(), libMesh::System::read_header(), libMesh::System::variable_scalar_number(), libMesh::System::variable_type(), libMesh::EnsightIO::write_scalar_ascii(), and libMesh::EnsightIO::write_vector_ascii().

 {
   // Make sure the variable exists
   std::map<std::string, unsigned short int>::const_iterator
     pos = _variable_numbers.find(var);
 
   if (pos == _variable_numbers.end())
     libmesh_error_msg("ERROR: variable " << var << " does not exist in this system!");
 
   libmesh_assert_equal_to (_variables[pos->second].name(), var);
 
   return pos->second;
 }

◆ variable_scalar_number() [1/2]

unsigned int libMesh::System::variable_scalar_number	(	const std::string &	var,
		unsigned int	component
	)		const

inlineinherited

Returns: An index, starting from 0 for the first component of the first variable, and incrementing for each component of each (potentially vector-valued) variable in the system in order. For systems with only scalar-valued variables, this will be the same as variable_number(var)

Irony: currently our only non-scalar-valued variable type is SCALAR.

Definition at line 2164 of file system.h.

References libMesh::System::variable_number().

Referenced by libMesh::ExactSolution::_compute_error(), and libMesh::ExactErrorEstimator::find_squared_element_error().

 {
   return variable_scalar_number(this->variable_number(var), component);
 }

◆ variable_scalar_number() [2/2]

unsigned int libMesh::System::variable_scalar_number	(	unsigned int	var_num,
		unsigned int	component
	)		const

inlineinherited

Returns: An index, starting from 0 for the first component of the first variable, and incrementing for each component of each (potentially vector-valued) variable in the system in order. For systems with only scalar-valued variables, this will be the same as var_num

Irony: currently our only non-scalar-valued variable type is SCALAR.

Definition at line 2174 of file system.h.

References libMesh::System::_variables.

 {
   return _variables[var_num].first_scalar_number() + component;
 }

◆ variable_type() [1/2]

const FEType & libMesh::System::variable_type ( const unsigned int i ) const

inlineinherited

Returns: The finite element type variable number i.

Definition at line 2183 of file system.h.

References libMesh::System::_variables.

Referenced by libMesh::System::add_variable(), libMesh::System::add_variables(), libMesh::EquationSystems::build_discontinuous_solution_vector(), libMesh::EquationSystems::build_parallel_elemental_solution_vector(), libMesh::EquationSystems::build_parallel_solution_vector(), libMesh::ExodusII_IO::copy_elemental_solution(), libMesh::GMVIO::copy_nodal_solution(), libMesh::DGFEMContext::DGFEMContext(), libMesh::JumpErrorEstimator::estimate_error(), libMesh::FEMSystem::init_context(), libMesh::FEMContext::init_internal_data(), libMesh::System::write_header(), libMesh::EnsightIO::write_scalar_ascii(), and libMesh::EnsightIO::write_vector_ascii().

 {
   libmesh_assert_less (i, _variables.size());
 
   return _variables[i].type();
 }

◆ variable_type() [2/2]

const FEType & libMesh::System::variable_type ( const std::string & var ) const

inlineinherited

Returns: The finite element type for variable var.

Definition at line 2193 of file system.h.

References libMesh::System::_variables, and libMesh::System::variable_number().

 {
   return _variables[this->variable_number(var)].type();
 }

◆ vector_is_adjoint()

int libMesh::System::vector_is_adjoint ( const std::string & vec_name ) const

inherited

Returns: The integer describing whether the vector identified by vec_name represents a solution from an adjoint (non-negative) or the primal (-1) space.

Definition at line 896 of file system.C.

References libMesh::System::_vector_is_adjoint.

Referenced by libMesh::System::restrict_vectors().

 {
   libmesh_assert(_vector_is_adjoint.find(vec_name) !=
                  _vector_is_adjoint.end());
 
   return _vector_is_adjoint.find(vec_name)->second;
 }

◆ vector_name() [1/2]

const std::string & libMesh::System::vector_name ( const unsigned int vec_num ) const

inherited

Returns: The name of this system's additional vector number vec_num (where the vectors are counted starting with 0).

Definition at line 832 of file system.C.

References libMesh::System::vectors_begin(), and libMesh::System::vectors_end().

 {
   const_vectors_iterator v = vectors_begin();
   const_vectors_iterator v_end = vectors_end();
   unsigned int num = 0;
   while ((num<vec_num) && (v!=v_end))
     {
       num++;
       ++v;
     }
   libmesh_assert (v != v_end);
   return v->first;
 }

◆ vector_name() [2/2]

const std::string & libMesh::System::vector_name ( const NumericVector< Number > & vec_reference ) const

inherited

Returns: The name of a system vector, given a reference to that vector

Definition at line 846 of file system.C.

References libMesh::System::vectors_begin(), and libMesh::System::vectors_end().

 {
   const_vectors_iterator v = vectors_begin();
   const_vectors_iterator v_end = vectors_end();
 
   for (; v != v_end; ++v)
     {
       // Check if the current vector is the one whose name we want
       if (&vec_reference == v->second)
         break; // exit loop if it is
     }
 
   // Before returning, make sure we didnt loop till the end and not find any match
   libmesh_assert (v != v_end);
 
   // Return the string associated with the current vector
   return v->first;
 }

◆ vector_preservation()

bool libMesh::System::vector_preservation ( const std::string & vec_name ) const

inherited

Returns: The boolean describing whether the vector identified by vec_name should be "preserved": projected to new meshes, saved, etc.

Definition at line 875 of file system.C.

References libMesh::System::_vector_projections.

Referenced by libMesh::MemorySolutionHistory::store().

 {
   if (_vector_projections.find(vec_name) == _vector_projections.end())
     return false;
 
   return _vector_projections.find(vec_name)->second;
 }

◆ vectors_begin() [1/2]

System::vectors_iterator libMesh::System::vectors_begin ( )

inlineinherited

Beginning of vectors container

Definition at line 2245 of file system.h.

References libMesh::System::_vectors.

Referenced by libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::System::get_vector(), libMesh::System::request_vector(), libMesh::MemorySolutionHistory::store(), and libMesh::System::vector_name().

 {
   return _vectors.begin();
 }

◆ vectors_begin() [2/2]

System::const_vectors_iterator libMesh::System::vectors_begin ( ) const

inlineinherited

Beginning of vectors container

Definition at line 2251 of file system.h.

References libMesh::System::_vectors.

 {
   return _vectors.begin();
 }

◆ vectors_end() [1/2]

System::vectors_iterator libMesh::System::vectors_end ( )

inlineinherited

End of vectors container

Definition at line 2257 of file system.h.

References libMesh::System::_vectors.

Referenced by libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::System::get_vector(), libMesh::System::request_vector(), libMesh::MemorySolutionHistory::store(), and libMesh::System::vector_name().

 {
   return _vectors.end();
 }

◆ vectors_end() [2/2]

System::const_vectors_iterator libMesh::System::vectors_end ( ) const

inlineinherited

End of vectors container

Definition at line 2263 of file system.h.

References libMesh::System::_vectors.

 {
   return _vectors.end();
 }

◆ weighted_sensitivity_adjoint_solve()

std::pair< unsigned int, Real > libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve	(	const ParameterVector &	parameters,
		const ParameterVector &	weights,
		const QoISet &	qoi_indices = `QoISet()`
	)

overridevirtualinherited

Assembles & solves the linear system(s) (dR/du)^T*z_w = sum(w_p*(d^2q/dudp - d^2R/dudp*z)), for those parameters p contained within parameters, weighted by the values w_p found within weights.

Assumes that adjoint_solve has already calculated z for each qoi in qoi_indices.

Returns: A pair with the total number of linear iterations performed and the (sum of the) final residual norms

Reimplemented from libMesh::System.

Definition at line 425 of file implicit_system.C.

References libMesh::System::add_weighted_sensitivity_adjoint_solution(), libMesh::ExplicitSystem::assemble_qoi_derivative(), libMesh::ImplicitSystem::assembly(), libMesh::NumericVector< T >::close(), libMesh::SparseMatrix< T >::close(), libMesh::ParameterVector::deep_copy(), libMesh::DofMap::enforce_constraints_exactly(), libMesh::System::get_adjoint_rhs(), libMesh::System::get_adjoint_solution(), libMesh::System::get_dof_map(), libMesh::ImplicitSystem::get_linear_solve_parameters(), libMesh::ImplicitSystem::get_linear_solver(), libMesh::SparseMatrix< T >::get_transpose(), libMesh::System::get_weighted_sensitivity_adjoint_solution(), libMesh::DofMap::has_adjoint_dirichlet_boundaries(), libMesh::QoISet::has_index(), libMesh::ImplicitSystem::matrix, libMesh::System::n_qois(), libMesh::Real, libMesh::ImplicitSystem::release_linear_solver(), libMesh::ExplicitSystem::rhs, libMesh::LinearSolver< T >::solve(), libMesh::TOLERANCE, libMesh::ParameterVector::value_copy(), libMesh::SparseMatrix< T >::vector_mult_add(), and libMesh::NumericVector< T >::zero_clone().

Referenced by libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product().

 {
   // Log how long the linear solve takes.
   LOG_SCOPE("weighted_sensitivity_adjoint_solve()", "ImplicitSystem");
 
   // We currently get partial derivatives via central differencing
   const Real delta_p = TOLERANCE;
 
   ParameterVector & parameters =
     const_cast<ParameterVector &>(parameters_in);
 
   // The forward system should now already be solved.
   // The adjoint system should now already be solved.
   // Now we're assembling a weighted sum of adjoint-adjoint systems:
   //
   // dR/du (u, sum_l(w_l*z^l)) = sum_l(w_l*(Q''_ul - R''_ul (u, z)))
 
   // FIXME: The derivation here does not yet take adjoint boundary
   // conditions into account.
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       libmesh_assert(!this->get_dof_map().has_adjoint_dirichlet_boundaries(i));
 
   // We'll assemble the rhs first, because the R'' term will require
   // perturbing the jacobian
 
   // We'll use temporary rhs vectors, because we haven't (yet) found
   // any good reasons why users might want to save these:
 
   std::vector<std::unique_ptr<NumericVector<Number>>> temprhs(this->n_qois());
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       temprhs[i] = this->rhs->zero_clone();
 
   // We approximate the _l partial derivatives via a central
   // differencing perturbation in the w_l direction:
   //
   // sum_l(w_l*v_l) ~= (v(p + dp*w_l*e_l) - v(p - dp*w_l*e_l))/(2*dp)
 
   // PETSc doesn't implement SGEMX, so neither does NumericVector,
   // so we want to avoid calculating f -= R'*z.  We'll thus evaluate
   // the above equation by first adding -v(p+dp...), then multiplying
   // the intermediate result vectors by -1, then adding -v(p-dp...),
   // then finally dividing by 2*dp.
 
   ParameterVector oldparameters, parameterperturbation;
   parameters.deep_copy(oldparameters);
   weights.deep_copy(parameterperturbation);
   parameterperturbation *= delta_p;
   parameters += parameterperturbation;
 
   this->assembly(false, true);
   this->matrix->close();
 
   // Take the discrete adjoint, so that we can calculate R_u(u,z) with
   // a matrix-vector product of R_u and z.
   matrix->get_transpose(*matrix);
 
   this->assemble_qoi_derivative(qoi_indices,
                                 /* include_liftfunc = */ false,
                                 /* apply_constraints = */ true);
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       {
         this->get_adjoint_rhs(i).close();
         *(temprhs[i]) -= this->get_adjoint_rhs(i);
         this->matrix->vector_mult_add(*(temprhs[i]), this->get_adjoint_solution(i));
         *(temprhs[i]) *= -1.0;
       }
 
   oldparameters.value_copy(parameters);
   parameterperturbation *= -1.0;
   parameters += parameterperturbation;
 
   this->assembly(false, true);
   this->matrix->close();
   matrix->get_transpose(*matrix);
 
   this->assemble_qoi_derivative(qoi_indices,
                                 /* include_liftfunc = */ false,
                                 /* apply_constraints = */ true);
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       {
         this->get_adjoint_rhs(i).close();
         *(temprhs[i]) -= this->get_adjoint_rhs(i);
         this->matrix->vector_mult_add(*(temprhs[i]), this->get_adjoint_solution(i));
         *(temprhs[i]) /= (2.0*delta_p);
       }
 
   // Finally, assemble the jacobian at the non-perturbed parameter
   // values.  Ignore assemble_before_solve; if we had a good
   // non-perturbed matrix before we've already overwritten it.
   oldparameters.value_copy(parameters);
 
   // if (this->assemble_before_solve)
   {
     // Build the Jacobian
     this->assembly(false, true);
     this->matrix->close();
 
     // Take the discrete adjoint
     matrix->get_transpose(*matrix);
   }
 
   // The weighted adjoint-adjoint problem is linear
   LinearSolver<Number> * linear_solver = this->get_linear_solver();
 
   // Our iteration counts and residuals will be sums of the individual
   // results
   std::pair<unsigned int, Real> solver_params =
     this->get_linear_solve_parameters();
   std::pair<unsigned int, Real> totalrval = std::make_pair(0,0.0);
 
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       {
         const std::pair<unsigned int, Real> rval =
           linear_solver->solve (*matrix, this->add_weighted_sensitivity_adjoint_solution(i),
                                 *(temprhs[i]),
                                 solver_params.second,
                                 solver_params.first);
 
         totalrval.first  += rval.first;
         totalrval.second += rval.second;
       }
 
   this->release_linear_solver(linear_solver);
 
   // The linear solver may not have fit our constraints exactly
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
   for (unsigned int i=0; i != this->n_qois(); ++i)
     if (qoi_indices.has_index(i))
       this->get_dof_map().enforce_constraints_exactly
         (*this, &this->get_weighted_sensitivity_adjoint_solution(i),
          /* homogeneous = */ true);
 #endif
 
   return totalrval;
 }

◆ weighted_sensitivity_solve()

std::pair< unsigned int, Real > libMesh::ImplicitSystem::weighted_sensitivity_solve	(	const ParameterVector &	parameters,
		const ParameterVector &	weights
	)

overridevirtualinherited

Assembles & solves the linear system(s) (dR/du)*u_w = sum(w_p*-dR/dp), for those parameters p contained within parameters weighted by the values w_p found within weights.

Returns: A pair with the total number of linear iterations performed and the (sum of the) final residual norms

Reimplemented from libMesh::System.

Definition at line 571 of file implicit_system.C.

References libMesh::System::add_weighted_sensitivity_solution(), libMesh::ImplicitSystem::assembly(), libMesh::NumericVector< T >::clone(), libMesh::NumericVector< T >::close(), libMesh::SparseMatrix< T >::close(), libMesh::ParameterVector::deep_copy(), libMesh::DofMap::enforce_constraints_exactly(), libMesh::System::get_dof_map(), libMesh::ImplicitSystem::get_linear_solve_parameters(), libMesh::ImplicitSystem::get_linear_solver(), libMesh::System::get_weighted_sensitivity_solution(), libMesh::ImplicitSystem::matrix, libMesh::Real, libMesh::ImplicitSystem::release_linear_solver(), libMesh::ExplicitSystem::rhs, libMesh::LinearSolver< T >::solve(), libMesh::TOLERANCE, and libMesh::ParameterVector::value_copy().

Referenced by libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product().

 {
   // Log how long the linear solve takes.
   LOG_SCOPE("weighted_sensitivity_solve()", "ImplicitSystem");
 
   // We currently get partial derivatives via central differencing
   const Real delta_p = TOLERANCE;
 
   ParameterVector & parameters =
     const_cast<ParameterVector &>(parameters_in);
 
   // The forward system should now already be solved.
 
   // Now we're assembling a weighted sum of sensitivity systems:
   //
   // dR/du (u, v)(sum(w_l*u'_l)) = -sum_l(w_l*R'_l (u, v)) forall v
 
   // We'll assemble the rhs first, because the R' term will require
   // perturbing the system, and some applications may not be able to
   // assemble a perturbed residual without simultaneously constructing
   // a perturbed jacobian.
 
   // We approximate the _l partial derivatives via a central
   // differencing perturbation in the w_l direction:
   //
   // sum_l(w_l*v_l) ~= (v(p + dp*w_l*e_l) - v(p - dp*w_l*e_l))/(2*dp)
 
   ParameterVector oldparameters, parameterperturbation;
   parameters.deep_copy(oldparameters);
   weights.deep_copy(parameterperturbation);
   parameterperturbation *= delta_p;
   parameters += parameterperturbation;
 
   this->assembly(true, false, true);
   this->rhs->close();
 
   std::unique_ptr<NumericVector<Number>> temprhs = this->rhs->clone();
 
   oldparameters.value_copy(parameters);
   parameterperturbation *= -1.0;
   parameters += parameterperturbation;
 
   this->assembly(true, false, true);
   this->rhs->close();
 
   *temprhs -= *(this->rhs);
   *temprhs /= (2.0*delta_p);
 
   // Finally, assemble the jacobian at the non-perturbed parameter
   // values
   oldparameters.value_copy(parameters);
 
   // Build the Jacobian
   this->assembly(false, true);
   this->matrix->close();
 
   // The weighted sensitivity problem is linear
   LinearSolver<Number> * linear_solver = this->get_linear_solver();
 
   std::pair<unsigned int, Real> solver_params =
     this->get_linear_solve_parameters();
 
   const std::pair<unsigned int, Real> rval =
     linear_solver->solve (*matrix, this->add_weighted_sensitivity_solution(),
                           *temprhs,
                           solver_params.second,
                           solver_params.first);
 
   this->release_linear_solver(linear_solver);
 
   // The linear solver may not have fit our constraints exactly
 #ifdef LIBMESH_ENABLE_CONSTRAINTS
   this->get_dof_map().enforce_constraints_exactly
     (*this, &this->get_weighted_sensitivity_solution(),
      /* homogeneous = */ true);
 #endif
 
   return rval;
 }

◆ write_header()

void libMesh::System::write_header	(	Xdr &	io,
		const std::string &	version,
		const bool	write_additional_data
	)		const

inherited

Writes the basic data header for this System.

This method implements the output of a System object, embedded in the output of an EquationSystems<T_sys>. This warrants some documentation. The output of this part consists of 5 sections:

for this system

5.) The number of variables in the system (unsigned int)

for each variable in the system

6.) The name of the variable (string)

6.1.) subdomain where the variable lives

7.) Combined in an FEType:

The approximation order(s) of the variable (Order Enum, cast to int/s)
The finite element family/ies of the variable (FEFamily Enum, cast to int/s)

end variable loop

8.) The number of additional vectors (unsigned int),

for each additional vector in the system object

9.) the name of the additional vector (string)

end system

Definition at line 1299 of file system_io.C.

References libMesh::System::_vectors, libMesh::Variable::active_subdomains(), libMesh::Xdr::data(), libMesh::FEType::family, libMesh::System::get_mesh(), libMesh::FEType::inf_map, libMesh::System::n_vars(), libMesh::System::n_vectors(), libMesh::System::name(), libMesh::FEType::order, libMesh::ParallelObject::processor_id(), libMesh::FEType::radial_family, libMesh::FEType::radial_order, libMesh::System::variable(), libMesh::System::variable_name(), libMesh::System::variable_type(), and libMesh::Xdr::writing().

 {
   libmesh_assert (io.writing());
 
 
   // Only write the header information
   // if we are processor 0.
   if (this->get_mesh().processor_id() != 0)
     return;
 
   std::string comment;
   char buf[80];
 
   // 5.)
   // Write the number of variables in the system
 
   {
     // set up the comment
     comment = "# No. of Variables in System \"";
     comment += this->name();
     comment += "\"";
 
     unsigned int nv = this->n_vars();
     io.data (nv, comment.c_str());
   }
 
 
   for (unsigned int var=0; var<this->n_vars(); var++)
     {
       // 6.)
       // Write the name of the var-th variable
       {
         // set up the comment
         comment  = "#   Name, Variable No. ";
         std::sprintf(buf, "%u", var);
         comment += buf;
         comment += ", System \"";
         comment += this->name();
         comment += "\"";
 
         std::string var_name = this->variable_name(var);
         io.data (var_name, comment.c_str());
       }
 
       // 6.1.) Variable subdomains
       {
         // set up the comment
         comment  = "#     Subdomains, Variable \"";
         std::sprintf(buf, "%s", this->variable_name(var).c_str());
         comment += buf;
         comment += "\", System \"";
         comment += this->name();
         comment += "\"";
 
         const std::set<subdomain_id_type> & domains = this->variable(var).active_subdomains();
         std::vector<subdomain_id_type> domain_array;
         domain_array.assign(domains.begin(), domains.end());
         io.data (domain_array, comment.c_str());
       }
 
       // 7.)
       // Write the approximation order of the var-th variable
       // in this system
       {
         // set up the comment
         comment = "#     Approximation Order, Variable \"";
         std::sprintf(buf, "%s", this->variable_name(var).c_str());
         comment += buf;
         comment += "\", System \"";
         comment += this->name();
         comment += "\"";
 
         int order = static_cast<int>(this->variable_type(var).order);
         io.data (order, comment.c_str());
       }
 
 
 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
 
       // do the same for radial_order
       {
         comment = "#     Radial Approximation Order, Variable \"";
         std::sprintf(buf, "%s", this->variable_name(var).c_str());
         comment += buf;
         comment += "\", System \"";
         comment += this->name();
         comment += "\"";
 
         int rad_order = static_cast<int>(this->variable_type(var).radial_order);
         io.data (rad_order, comment.c_str());
       }
 
 #endif
 
       // Write the Finite Element type of the var-th variable
       // in this System
       {
         // set up the comment
         comment = "#     FE Family, Variable \"";
         std::sprintf(buf, "%s", this->variable_name(var).c_str());
         comment += buf;
         comment += "\", System \"";
         comment += this->name();
         comment += "\"";
 
         const FEType & type = this->variable_type(var);
         int fam = static_cast<int>(type.family);
         io.data (fam, comment.c_str());
 
 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
 
         comment = "#     Radial FE Family, Variable \"";
         std::sprintf(buf, "%s", this->variable_name(var).c_str());
         comment += buf;
         comment += "\", System \"";
         comment += this->name();
         comment += "\"";
 
         int radial_fam = static_cast<int>(type.radial_family);
         io.data (radial_fam, comment.c_str());
 
         comment = "#     Infinite Mapping Type, Variable \"";
         std::sprintf(buf, "%s", this->variable_name(var).c_str());
         comment += buf;
         comment += "\", System \"";
         comment += this->name();
         comment += "\"";
 
         int i_map = static_cast<int>(type.inf_map);
         io.data (i_map, comment.c_str());
 #endif
       }
     } // end of the variable loop
 
   // 8.)
   // Write the number of additional vectors in the System.
   // If write_additional_data==false, then write zero for
   // the number of additional vectors.
   {
     {
       // set up the comment
       comment = "# No. of Additional Vectors, System \"";
       comment += this->name();
       comment += "\"";
 
       unsigned int nvecs = write_additional_data ? this->n_vectors () : 0;
       io.data (nvecs, comment.c_str());
     }
 
     if (write_additional_data)
       {
         unsigned int cnt=0;
         for (const auto & pr : _vectors)
           {
             // 9.)
             // write the name of the cnt-th additional vector
             comment =  "# Name of ";
             std::sprintf(buf, "%d", cnt++);
             comment += buf;
             comment += "th vector";
             std::string vec_name = pr.first;
 
             io.data (vec_name, comment.c_str());
           }
       }
   }
 }

◆ write_parallel_data()

void libMesh::System::write_parallel_data	(	Xdr &	io,
		const bool	write_additional_data
	)		const

inherited

Writes additional data, namely vectors, for this System. This method may safely be called on a distributed-memory mesh. This method will create an individual file for each processor in the simulation where the local solution components for that processor will be stored.

This method implements the output of the vectors contained in this System object, embedded in the output of an EquationSystems<T_sys>.

9.) The global solution vector, re-ordered to be node-major (More on this later.)

for each additional vector in the object

10.) The global additional vector, re-ordered to be node-major (More on this later.)

Note that the actual IO is handled through the Xdr class (to be renamed later?) which provides a uniform interface to both the XDR (eXternal Data Representation) interface and standard ASCII output. Thus this one section of code will read XDR or ASCII files with no changes.

Definition at line 1504 of file system_io.C.

References libMesh::System::_vectors, libMesh::Xdr::data(), libMesh::FEType::family, libMesh::System::get_dof_map(), libMesh::System::get_mesh(), libMesh::DofObject::invalid_id, libMesh::ParallelObject::n_processors(), libMesh::System::n_vars(), libMesh::System::name(), libMesh::System::number(), libMesh::ParallelObject::processor_id(), libMesh::SCALAR, libMesh::DofMap::SCALAR_dof_indices(), libMesh::System::solution, libMesh::Variable::type(), libMesh::System::variable(), and libMesh::Xdr::writing().

 {
   // PerfLog pl("IO Performance",false);
   // pl.push("write_parallel_data");
   // std::size_t total_written_size = 0;
 
   std::string comment;
 
   libmesh_assert (io.writing());
 
   std::vector<Number> io_buffer; io_buffer.reserve(this->solution->local_size());
 
   // build the ordered nodes and element maps.
   // when writing/reading parallel files we need to iterate
   // over our nodes/elements in order of increasing global id().
   // however, this is not guaranteed to be ordering we obtain
   // by using the node_iterators/element_iterators directly.
   // so build a set, sorted by id(), that provides the ordering.
   // further, for memory economy build the set but then transfer
   // its contents to vectors, which will be sorted.
   std::vector<const DofObject *> ordered_nodes, ordered_elements;
   {
     std::set<const DofObject *, CompareDofObjectsByID>
       ordered_nodes_set (this->get_mesh().local_nodes_begin(),
                          this->get_mesh().local_nodes_end());
 
     ordered_nodes.insert(ordered_nodes.end(),
                          ordered_nodes_set.begin(),
                          ordered_nodes_set.end());
   }
   {
     std::set<const DofObject *, CompareDofObjectsByID>
       ordered_elements_set (this->get_mesh().local_elements_begin(),
                             this->get_mesh().local_elements_end());
 
     ordered_elements.insert(ordered_elements.end(),
                             ordered_elements_set.begin(),
                             ordered_elements_set.end());
   }
 
   const unsigned int sys_num = this->number();
   const unsigned int nv      = this->n_vars();
 
   // Loop over each non-SCALAR variable and each node, and write out the value.
   for (unsigned int var=0; var<nv; var++)
     if (this->variable(var).type().family != SCALAR)
       {
         // First write the node DOF values
         for (const auto & node : ordered_nodes)
           for (unsigned int comp=0; comp<node->n_comp(sys_num, var); comp++)
             {
               libmesh_assert_not_equal_to (node->dof_number(sys_num, var, comp),
                                            DofObject::invalid_id);
 
               io_buffer.push_back((*this->solution)(node->dof_number(sys_num, var, comp)));
             }
 
         // Then write the element DOF values
         for (const auto & elem : ordered_elements)
           for (unsigned int comp=0; comp<elem->n_comp(sys_num, var); comp++)
             {
               libmesh_assert_not_equal_to (elem->dof_number(sys_num, var, comp),
                                            DofObject::invalid_id);
 
               io_buffer.push_back((*this->solution)(elem->dof_number(sys_num, var, comp)));
             }
       }
 
   // Finally, write the SCALAR data on the last processor
   for (unsigned int var=0; var<this->n_vars(); var++)
     if (this->variable(var).type().family == SCALAR)
       {
         if (this->processor_id() == (this->n_processors()-1))
           {
             const DofMap & dof_map = this->get_dof_map();
             std::vector<dof_id_type> SCALAR_dofs;
             dof_map.SCALAR_dof_indices(SCALAR_dofs, var);
 
             for (std::size_t i=0; i<SCALAR_dofs.size(); i++)
               io_buffer.push_back((*this->solution)(SCALAR_dofs[i]));
           }
       }
 
   // 9.)
   //
   // Actually write the reordered solution vector
   // for the ith system to disk
 
   // set up the comment
   {
     comment = "# System \"";
     comment += this->name();
     comment += "\" Solution Vector";
   }
 
   io.data (io_buffer, comment.c_str());
 
   // total_written_size += io_buffer.size();
 
   // Only write additional vectors if wanted
   if (write_additional_data)
     {
       for (auto & pr : _vectors)
         {
           io_buffer.clear();
           io_buffer.reserve(pr.second->local_size());
 
           // Loop over each non-SCALAR variable and each node, and write out the value.
           for (unsigned int var=0; var<nv; var++)
             if (this->variable(var).type().family != SCALAR)
               {
                 // First write the node DOF values
                 for (const auto & node : ordered_nodes)
                   for (unsigned int comp=0; comp<node->n_comp(sys_num, var); comp++)
                     {
                       libmesh_assert_not_equal_to (node->dof_number(sys_num, var, comp),
                                                    DofObject::invalid_id);
 
                       io_buffer.push_back((*pr.second)(node->dof_number(sys_num, var, comp)));
                     }
 
                 // Then write the element DOF values
                 for (const auto & elem : ordered_elements)
                   for (unsigned int comp=0; comp<elem->n_comp(sys_num, var); comp++)
                     {
                       libmesh_assert_not_equal_to (elem->dof_number(sys_num, var, comp),
                                                    DofObject::invalid_id);
 
                       io_buffer.push_back((*pr.second)(elem->dof_number(sys_num, var, comp)));
                     }
               }
 
           // Finally, write the SCALAR data on the last processor
           for (unsigned int var=0; var<this->n_vars(); var++)
             if (this->variable(var).type().family == SCALAR)
               {
                 if (this->processor_id() == (this->n_processors()-1))
                   {
                     const DofMap & dof_map = this->get_dof_map();
                     std::vector<dof_id_type> SCALAR_dofs;
                     dof_map.SCALAR_dof_indices(SCALAR_dofs, var);
 
                     for (std::size_t i=0; i<SCALAR_dofs.size(); i++)
                       io_buffer.push_back((*pr.second)(SCALAR_dofs[i]));
                   }
               }
 
           // 10.)
           //
           // Actually write the reordered additional vector
           // for this system to disk
 
           // set up the comment
           {
             comment = "# System \"";
             comment += this->name();
             comment += "\" Additional Vector \"";
             comment += pr.first;
             comment += "\"";
           }
 
           io.data (io_buffer, comment.c_str());
 
           // total_written_size += io_buffer.size();
         }
     }
 
   // const Real
   //   dt   = pl.get_elapsed_time(),
   //   rate = total_written_size*sizeof(Number)/dt;
 
   // libMesh::err << "Write " << total_written_size << " \"Number\" values\n"
   //     << " Elapsed time = " << dt << '\n'
   //     << " Rate = " << rate/1.e6 << "(MB/sec)\n\n";
 
   // pl.pop("write_parallel_data");
 }

◆ write_parameter_data_to_files()

void libMesh::RBParametrized::write_parameter_data_to_files	(	const std::string &	continuous_param_file_name,
		const std::string &	discrete_param_file_name,
		const bool	write_binary_data
	)

inherited

Write out the parameter ranges to files.

◆ write_riesz_representors_to_files()

virtual void libMesh::RBConstruction::write_riesz_representors_to_files	(	const std::string &	riesz_representors_dir,
		const bool	write_binary_residual_representors
	)

virtual

Write out all the Riesz representor data to files. residual_representors_dir specifies which directory to write to. write_binary_residual_representors specifies whether we write binary or ASCII data.

Reimplemented in libMesh::TransientRBConstruction.

◆ write_serialized_data()

void libMesh::System::write_serialized_data	(	Xdr &	io,
		const bool	write_additional_data = `true`
	)		const

inherited

Writes additional data, namely vectors, for this System. This method may safely be called on a distributed-memory mesh.

This method implements the output of the vectors contained in this System object, embedded in the output of an EquationSystems<T_sys>.

9.) The global solution vector, re-ordered to be node-major (More on this later.)

for each additional vector in the object

10.) The global additional vector, re-ordered to be node-major (More on this later.)

Definition at line 1704 of file system_io.C.

References libMesh::System::_vectors, libMesh::Xdr::comment(), libMesh::System::name(), libMesh::ParallelObject::processor_id(), libMesh::System::solution, and libMesh::System::write_serialized_vector().

 {
   parallel_object_only();
   std::string comment;
 
   // PerfLog pl("IO Performance",false);
   // pl.push("write_serialized_data");
   // std::size_t total_written_size = 0;
 
   // total_written_size +=
   this->write_serialized_vector(io, *this->solution);
 
   // set up the comment
   if (this->processor_id() == 0)
     {
       comment = "# System \"";
       comment += this->name();
       comment += "\" Solution Vector";
 
       io.comment (comment);
     }
 
   // Only write additional vectors if wanted
   if (write_additional_data)
     {
       std::map<std::string, NumericVector<Number> *>::const_iterator
         pos = _vectors.begin();
 
       for (; pos != this->_vectors.end(); ++pos)
         {
           // total_written_size +=
           this->write_serialized_vector(io, *pos->second);
 
           // set up the comment
           if (this->processor_id() == 0)
             {
               comment = "# System \"";
               comment += this->name();
               comment += "\" Additional Vector \"";
               comment += pos->first;
               comment += "\"";
               io.comment (comment);
             }
         }
     }
 
   // const Real
   //   dt   = pl.get_elapsed_time(),
   //   rate = total_written_size*sizeof(Number)/dt;
 
   // libMesh::out << "Write " << total_written_size << " \"Number\" values\n"
   //     << " Elapsed time = " << dt << '\n'
   //     << " Rate = " << rate/1.e6 << "(MB/sec)\n\n";
 
   // pl.pop("write_serialized_data");
 
 
 
 
   // // test the new method
   // {
   //   std::vector<std::string> names;
   //   std::vector<NumericVector<Number> *> vectors_to_write;
 
   //   names.push_back("Solution Vector");
   //   vectors_to_write.push_back(this->solution.get());
 
   //   // Only write additional vectors if wanted
   //   if (write_additional_data)
   //     {
   // std::map<std::string, NumericVector<Number> *>::const_iterator
   //   pos = _vectors.begin();
 
   // for (; pos != this->_vectors.end(); ++pos)
   //   {
   //     names.push_back("Additional Vector " + pos->first);
   //     vectors_to_write.push_back(pos->second);
   //   }
   //     }
 
   //   total_written_size =
   //     this->write_serialized_vectors (io, names, vectors_to_write);
 
   //   const Real
   //     dt2   = pl.get_elapsed_time(),
   //     rate2 = total_written_size*sizeof(Number)/(dt2-dt);
 
   //   libMesh::out << "Write (new) " << total_written_size << " \"Number\" values\n"
   //       << " Elapsed time = " << (dt2-dt) << '\n'
   //       << " Rate = " << rate2/1.e6 << "(MB/sec)\n\n";
 
   // }
 }

◆ write_serialized_vectors()

std::size_t libMesh::System::write_serialized_vectors	(	Xdr &	io,
		const std::vector< const NumericVector< Number > *> &	vectors
	)		const

inherited

Serialize & write a number of identically distributed vectors. This method allows for optimization for the multiple vector case by only communicating the metadata once.

Definition at line 2297 of file system_io.C.

References libMesh::Xdr::data(), libMesh::FEType::family, libMesh::System::get_mesh(), libMesh::MeshBase::n_elem(), libMesh::MeshTools::n_elem(), n_nodes, libMesh::MeshBase::n_nodes(), libMesh::System::n_vars(), libMesh::ParallelObject::processor_id(), libMesh::SCALAR, libMesh::Variable::type(), libMesh::System::variable(), libMesh::System::write_SCALAR_dofs(), libMesh::System::write_serialized_blocked_dof_objects(), and libMesh::Xdr::writing().

 {
   parallel_object_only();
 
   libmesh_assert (io.writing());
 
   // Cache these - they are not free!
   const dof_id_type
     n_nodes       = this->get_mesh().n_nodes(),
     n_elem        = this->get_mesh().n_elem();
 
   std::size_t written_length = 0;
 
   if (this->processor_id() == 0)
     {
       unsigned int
         n_vec    = cast_int<unsigned int>(vectors.size());
       dof_id_type
         vec_size = vectors.empty() ? 0 : vectors[0]->size();
       // Set the number of vectors
       io.data(n_vec, "# number of vectors");
       // Set the buffer size
       io.data(vec_size, "# vector length");
     }
 
   //---------------------------------
   // Collect the values for all nodes
   written_length +=
     this->write_serialized_blocked_dof_objects (vectors,
                                                 n_nodes,
                                                 this->get_mesh().local_nodes_begin(),
                                                 this->get_mesh().local_nodes_end(),
                                                 io);
 
   //------------------------------------
   // Collect the values for all elements
   written_length +=
     this->write_serialized_blocked_dof_objects (vectors,
                                                 n_elem,
                                                 this->get_mesh().local_elements_begin(),
                                                 this->get_mesh().local_elements_end(),
                                                 io);
 
   //-------------------------------------------
   // Finally loop over all the SCALAR variables
   for (std::size_t vec=0; vec<vectors.size(); vec++)
     for (unsigned int var=0; var<this->n_vars(); var++)
       if (this->variable(var).type().family == SCALAR)
         {
           libmesh_assert_not_equal_to (vectors[vec], 0);
 
           written_length +=
             this->write_SCALAR_dofs (*vectors[vec], var, io);
         }
 
   return written_length;
 }

◆ zero_constrained_dofs_on_vector()

void libMesh::RBConstruction::zero_constrained_dofs_on_vector ( NumericVector< Number > & vector )

It is sometimes useful to be able to zero vector entries that correspond to constrained dofs.

◆ zero_variable()

void libMesh::System::zero_variable	(	NumericVector< Number > &	v,
		unsigned int	var_num
	)		const

inherited

Zeroes all dofs in v that correspond to variable number var_num.

Definition at line 1322 of file system.C.

References libMesh::System::get_mesh(), mesh, libMesh::System::n_vars(), libMesh::System::number(), and libMesh::NumericVector< T >::set().

 {
   /* Make sure the call makes sense.  */
   libmesh_assert_less (var_num, this->n_vars());
 
   /* Get a reference to the mesh.  */
   const MeshBase & mesh = this->get_mesh();
 
   /* Check which system we are.  */
   const unsigned int sys_num = this->number();
 
   // Loop over nodes.
   for (const auto & node : mesh.local_node_ptr_range())
     {
       unsigned int n_comp = node->n_comp(sys_num,var_num);
       for (unsigned int i=0; i<n_comp; i++)
         {
           const dof_id_type index = node->dof_number(sys_num,var_num,i);
           v.set(index,0.0);
         }
     }
 
   // Loop over elements.
   for (const auto & elem : mesh.active_local_element_ptr_range())
     {
       unsigned int n_comp = elem->n_comp(sys_num,var_num);
       for (unsigned int i=0; i<n_comp; i++)
         {
           const dof_id_type index = elem->dof_number(sys_num,var_num,i);
           v.set(index,0.0);
         }
     }
 }

Member Data Documentation

◆ _communicator

const Parallel::Communicator& libMesh::ParallelObject::_communicator

protectedinherited

Definition at line 107 of file parallel_object.h.

Referenced by libMesh::EquationSystems::build_parallel_elemental_solution_vector(), libMesh::EquationSystems::build_parallel_solution_vector(), libMesh::ParallelObject::comm(), libMesh::ParallelObject::n_processors(), libMesh::ParallelObject::operator=(), and libMesh::ParallelObject::processor_id().

◆ _counts [1/2]

ReferenceCounter::Counts libMesh::ReferenceCounter::_counts

staticprotectedinherited

Actually holds the data.

Definition at line 122 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::get_info(), libMesh::ReferenceCounter::increment_constructor_count(), and libMesh::ReferenceCounter::increment_destructor_count().

◆ _counts [2/2]

ReferenceCounter::Counts libMesh::ReferenceCounter::_counts

staticprotectedinherited

Actually holds the data.

Definition at line 122 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::get_info(), libMesh::ReferenceCounter::increment_constructor_count(), and libMesh::ReferenceCounter::increment_destructor_count().

◆ _enable_print_counter [1/2]

bool libMesh::ReferenceCounter::_enable_print_counter = true

staticprotectedinherited

Flag to control whether reference count information is printed when print_info is called.

Definition at line 141 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::disable_print_counter_info(), libMesh::ReferenceCounter::enable_print_counter_info(), and libMesh::ReferenceCounter::print_info().

◆ _enable_print_counter [2/2]

bool libMesh::ReferenceCounter::_enable_print_counter = true

staticprotectedinherited

Flag to control whether reference count information is printed when print_info is called.

Definition at line 141 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::disable_print_counter_info(), libMesh::ReferenceCounter::enable_print_counter_info(), and libMesh::ReferenceCounter::print_info().

◆ _final_linear_residual

Real libMesh::LinearImplicitSystem::_final_linear_residual

protectedinherited

The final residual for the linear system Ax=b.

Definition at line 204 of file linear_implicit_system.h.

Referenced by libMesh::LinearImplicitSystem::final_linear_residual(), libMesh::FrequencySystem::solve(), and libMesh::LinearImplicitSystem::solve().

◆ _mutex [1/2]

Threads::spin_mutex libMesh::ReferenceCounter::_mutex

staticprotectedinherited

Mutual exclusion object to enable thread-safe reference counting.

Definition at line 135 of file reference_counter.h.

◆ _mutex [2/2]

Threads::spin_mutex libMesh::ReferenceCounter::_mutex

staticprotectedinherited

Mutual exclusion object to enable thread-safe reference counting.

Definition at line 135 of file reference_counter.h.

◆ _n_linear_iterations

unsigned int libMesh::LinearImplicitSystem::_n_linear_iterations

protectedinherited

The number of linear iterations required to solve the linear system Ax=b.

Definition at line 199 of file linear_implicit_system.h.

Referenced by libMesh::LinearImplicitSystem::n_linear_iterations(), libMesh::FrequencySystem::solve(), and libMesh::LinearImplicitSystem::solve().

◆ _n_objects [1/2]

Threads::atomic< unsigned int > libMesh::ReferenceCounter::_n_objects

staticprotectedinherited

The number of objects. Print the reference count information when the number returns to 0.

Definition at line 130 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::n_objects(), libMesh::ReferenceCounter::ReferenceCounter(), and libMesh::ReferenceCounter::~ReferenceCounter().

◆ _n_objects [2/2]

Threads::atomic< unsigned int > libMesh::ReferenceCounter::_n_objects

staticprotectedinherited

The number of objects. Print the reference count information when the number returns to 0.

Definition at line 130 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::n_objects(), libMesh::ReferenceCounter::ReferenceCounter(), and libMesh::ReferenceCounter::~ReferenceCounter().

◆ _shell_matrix

ShellMatrix<Number>* libMesh::LinearImplicitSystem::_shell_matrix

protectedinherited

User supplies shell matrix or nullptr if no shell matrix is used.

Definition at line 209 of file linear_implicit_system.h.

Referenced by libMesh::LinearImplicitSystem::attach_shell_matrix(), libMesh::LinearImplicitSystem::get_shell_matrix(), and libMesh::LinearImplicitSystem::solve().

◆ _subset

const SystemSubset* libMesh::LinearImplicitSystem::_subset

protectedinherited

The current subset on which to solve (or nullptr if none).

Definition at line 214 of file linear_implicit_system.h.

Referenced by libMesh::LinearImplicitSystem::restrict_solve_to(), and libMesh::LinearImplicitSystem::solve().

◆ _subset_solve_mode

SubsetSolveMode libMesh::LinearImplicitSystem::_subset_solve_mode

protectedinherited

If restrict-solve-to-subset mode is active, this member decides what happens with the dofs outside the subset.

Definition at line 220 of file linear_implicit_system.h.

Referenced by libMesh::LinearImplicitSystem::restrict_solve_to(), and libMesh::LinearImplicitSystem::solve().

◆ abs_training_tolerance

Real libMesh::RBConstruction::abs_training_tolerance

private

Definition at line 802 of file rb_construction.h.

Referenced by get_abs_training_tolerance(), and set_abs_training_tolerance().

◆ Aq_vector

std::vector<std::unique_ptr<SparseMatrix<Number> > > libMesh::RBConstruction::Aq_vector

private

Vector storing the Q_a matrices from the affine expansion

Definition at line 773 of file rb_construction.h.

◆ assemble_before_solve

bool libMesh::System::assemble_before_solve

inherited

Flag which tells the system to whether or not to call the user assembly function during each call to solve(). By default, every call to solve() begins with a call to the user assemble, so this flag is true. (For explicit systems, "solving" the system occurs during the assembly step, so this flag is always true for explicit systems.)

You will only want to set this to false if you need direct control over when the system is assembled, and are willing to track the state of its assembly yourself. An example of such a case is an implicit system with multiple right hand sides. In this instance, a single assembly would likely be followed with multiple calls to solve.

The frequency system and Newmark system have their own versions of this flag, called _finished_assemble, which might be able to be replaced with this more general concept.

Definition at line 1477 of file system.h.

Referenced by libMesh::ImplicitSystem::adjoint_solve(), libMesh::ImplicitSystem::disable_cache(), libMesh::System::disable_cache(), libMesh::ImplicitSystem::sensitivity_solve(), libMesh::CondensedEigenSystem::solve(), libMesh::EigenSystem::solve(), and libMesh::LinearImplicitSystem::solve().

◆ assert_convergence

bool libMesh::RBConstruction::assert_convergence

protected

A boolean flag to indicate whether to check for proper convergence after each solve.

Definition at line 746 of file rb_construction.h.

◆ compute_RB_inner_product

bool libMesh::RBConstruction::compute_RB_inner_product

Boolean flag to indicate whether we compute the RB_inner_product_matrix. This is false by default in RBConstruction since (in the default implementation) the RB inner-product matrix will just be the identity. But we may need the inner-product matrix subclasses.

Definition at line 539 of file rb_construction.h.

◆ current_local_solution

std::unique_ptr<NumericVector<Number> > libMesh::System::current_local_solution

inherited

All the values I need to compute my contribution to the simulation at hand. Think of this as the current solution with any ghost values needed from other processors. This vector is necessarily larger than the solution vector in the case of a parallel simulation. The update() member is used to synchronize the contents of the solution and current_local_solution vectors.

Definition at line 1535 of file system.h.

Referenced by libMesh::__libmesh_petsc_diff_solver_jacobian(), libMesh::__libmesh_petsc_diff_solver_residual(), libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::NonlinearImplicitSystem::assembly(), libMesh::EquationSystems::build_parallel_elemental_solution_vector(), libMesh::EquationSystems::build_parallel_solution_vector(), libMesh::System::clear(), libMesh::Problem_Interface::computeF(), libMesh::Problem_Interface::computeJacobian(), libMesh::Problem_Interface::computePreconditioner(), libMesh::System::current_solution(), DMlibMeshFunction(), DMlibMeshJacobian(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::ExactErrorEstimator::estimate_error(), libMesh::System::init_data(), libMesh::libmesh_petsc_snes_fd_residual(), libMesh::libmesh_petsc_snes_jacobian(), libMesh::libmesh_petsc_snes_mffd_residual(), libMesh::libmesh_petsc_snes_residual(), libMesh::libmesh_petsc_snes_residual_helper(), libMesh::FEMContext::pre_fe_reinit(), libMesh::System::re_update(), libMesh::System::reinit(), libMesh::System::restrict_vectors(), and libMesh::System::update().

◆ delta_N

unsigned int libMesh::RBConstruction::delta_N

protected

The number of basis functions that we add at each greedy step. This defaults to 1 in the steady case.

Definition at line 733 of file rb_construction.h.

Referenced by get_delta_N(), and libMesh::TransientRBConstruction::set_delta_N().

◆ exit_on_repeated_greedy_parameters

bool libMesh::RBConstruction::exit_on_repeated_greedy_parameters

Boolean flag to indicate whether we exit the greedy if we select the same parameters twice in a row. In some problems this indicates that the greedy has "saturated" typically due to numerical rounding effects.

Definition at line 516 of file rb_construction.h.

◆ extra_linear_solver

LinearSolver<Number>* libMesh::RBConstruction::extra_linear_solver

Also, we store a pointer to an extra linear solver. This can be useful if we want to pass in the linear solver from somewhere else. For example, if a solver is already primed elsewhere then it can be more efficient to use that solver.

Definition at line 465 of file rb_construction.h.

◆ extra_quadrature_order

int libMesh::System::extra_quadrature_order

inherited

A member int that can be employed to indicate increased or reduced quadrature order.

Note: For FEMSystem users, by default, when calling the user-defined residual functions, the FEMSystem will first set up an appropriate FEType::default_quadrature_rule() object for performing the integration. This rule will integrate elements of order up to 2*p+1 exactly (where p is the sum of the base FEType and local p refinement levels), but if additional (or reduced) quadrature accuracy is desired then this extra_quadrature_order (default 0) will be added.

Definition at line 1508 of file system.h.

◆ Fq_representor

std::vector<std::unique_ptr<NumericVector<Number> > > libMesh::RBConstruction::Fq_representor

Vector storing the residual representors associated with the right-hand side. These are basis independent and hence stored here, whereas the Aq_representors are stored in RBEvaluation

Definition at line 490 of file rb_construction.h.

◆ Fq_representor_innerprods

std::vector<Number> libMesh::RBConstruction::Fq_representor_innerprods

Vectors storing the residual representor inner products to be used in computing the residuals online. We store the Fq representor norms here because they are independent of a reduced basis space. The basis dependent representors are stored in RBEvaluation.

Definition at line 499 of file rb_construction.h.

◆ Fq_representor_innerprods_computed

bool libMesh::RBConstruction::Fq_representor_innerprods_computed

A boolean flag to indicate whether or not the Fq representor norms have already been computed — used to make sure that we don't recompute them unnecessarily.

Definition at line 560 of file rb_construction.h.

◆ Fq_vector

std::vector<std::unique_ptr<NumericVector<Number> > > libMesh::RBConstruction::Fq_vector

private

Vector storing the Q_f vectors in the affine decomposition of the right-hand side.

Definition at line 779 of file rb_construction.h.

◆ impose_internal_fluxes

bool libMesh::RBConstruction::impose_internal_fluxes

Boolean flag to indicate whether we impose "fluxes" (i.e. element boundary contributions to the weak form) on internal element boundaries in the assembly routines.

Definition at line 523 of file rb_construction.h.

◆ inner_product_assembly

ElemAssembly* libMesh::RBConstruction::inner_product_assembly

private

Pointer to inner product assembly.

Definition at line 768 of file rb_construction.h.

◆ inner_product_matrix

std::unique_ptr<SparseMatrix<Number> > libMesh::RBConstruction::inner_product_matrix

The inner product matrix.

Definition at line 470 of file rb_construction.h.

◆ inner_product_solver

std::unique_ptr<LinearSolver<Number> > libMesh::RBConstruction::inner_product_solver

We store an extra linear solver object which we can optionally use for solving all systems in which the system matrix is set to inner_product_matrix.

Definition at line 457 of file rb_construction.h.

◆ inner_product_storage_vector

std::unique_ptr<NumericVector<Number> > libMesh::RBConstructionBase< LinearImplicitSystem >::inner_product_storage_vector

protectedinherited

We keep an extra temporary vector that is useful for performing inner products (avoids unnecessary memory allocation/deallocation).

Definition at line 254 of file rb_construction_base.h.

◆ linear_solver

std::unique_ptr<LinearSolver<Number> > libMesh::LinearImplicitSystem::linear_solver

inherited

The LinearSolver defines the interface used to solve the linear_implicit system. This class handles all the details of interfacing with various linear algebra packages like PETSc or LASPACK.

Definition at line 158 of file linear_implicit_system.h.

Referenced by libMesh::LinearImplicitSystem::clear(), libMesh::LinearImplicitSystem::get_linear_solver(), libMesh::LinearImplicitSystem::init_data(), libMesh::LinearImplicitSystem::reinit(), libMesh::FrequencySystem::solve(), and libMesh::LinearImplicitSystem::solve().

◆ matrix

SparseMatrix<Number>* libMesh::ImplicitSystem::matrix

inherited

The system matrix. Implicit systems are characterized by the need to solve the linear system Ax=b. This is the system matrix A.

Definition at line 373 of file implicit_system.h.

◆ Nmax

unsigned int libMesh::RBConstruction::Nmax

protected

Maximum number of reduced basis functions we are willing to use.

Definition at line 727 of file rb_construction.h.

Referenced by get_Nmax().

◆ non_dirichlet_Aq_vector

std::vector<std::unique_ptr<SparseMatrix<Number> > > libMesh::RBConstruction::non_dirichlet_Aq_vector

private

We may also need a second set of matrices/vectors that do not have the Dirichlet boundary conditions enforced.

Definition at line 792 of file rb_construction.h.

◆ non_dirichlet_Fq_vector

std::vector<std::unique_ptr<NumericVector<Number> > > libMesh::RBConstruction::non_dirichlet_Fq_vector

private

Definition at line 793 of file rb_construction.h.

◆ non_dirichlet_inner_product_matrix

std::unique_ptr<SparseMatrix<Number> > libMesh::RBConstruction::non_dirichlet_inner_product_matrix

private

Definition at line 795 of file rb_construction.h.

◆ non_dirichlet_outputs_vector

std::vector<std::vector<std::unique_ptr<NumericVector<Number> > > > libMesh::RBConstruction::non_dirichlet_outputs_vector

private

Definition at line 794 of file rb_construction.h.

◆ normalize_rb_bound_in_greedy

bool libMesh::RBConstruction::normalize_rb_bound_in_greedy

private

This boolean indicates if we normalize the RB error in the greedy using RBEvaluation::get_error_bound_normalization().

Definition at line 808 of file rb_construction.h.

Referenced by get_normalize_rb_bound_in_greedy(), and set_normalize_rb_bound_in_greedy().

◆ output_dual_innerprods

std::vector<std::vector<Number > > libMesh::RBConstruction::output_dual_innerprods

The vector storing the dual norm inner product terms for each output.

Definition at line 482 of file rb_construction.h.

◆ output_dual_innerprods_computed

bool libMesh::RBConstruction::output_dual_innerprods_computed

protected

A boolean flag to indicate whether or not the output dual norms have already been computed — used to make sure that we don't recompute them unnecessarily.

Definition at line 740 of file rb_construction.h.

◆ outputs_vector

std::vector<std::vector<std::unique_ptr<NumericVector<Number> > > > libMesh::RBConstruction::outputs_vector

private

The libMesh vectors that define the output functionals. Each row corresponds to the affine expansion of an output.

Definition at line 785 of file rb_construction.h.

◆ qoi

std::vector<Number> libMesh::System::qoi

inherited

Values of the quantities of interest. This vector needs to be both resized and filled by the user before any quantity of interest assembly is done and before any sensitivities are calculated.

Definition at line 1558 of file system.h.

Referenced by libMesh::ImplicitSystem::adjoint_qoi_parameter_sensitivity(), libMesh::ExplicitSystem::assemble_qoi(), libMesh::FEMSystem::assemble_qoi(), libMesh::DifferentiableSystem::attach_qoi(), libMesh::DiffContext::DiffContext(), libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity(), libMesh::System::n_qois(), libMesh::ImplicitSystem::qoi_parameter_hessian(), and libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product().

◆ quiet_mode

bool libMesh::RBConstructionBase< LinearImplicitSystem >::quiet_mode

protectedinherited

Flag to indicate whether we print out extra information during the Offline stage.

Definition at line 239 of file rb_construction_base.h.

◆ rb_assembly_expansion

RBAssemblyExpansion* libMesh::RBConstruction::rb_assembly_expansion

private

This member holds the (parameter independent) assembly functors that define the "affine expansion" of the PDE that we are solving.

Definition at line 763 of file rb_construction.h.

◆ rb_eval

RBEvaluation* libMesh::RBConstruction::rb_eval

private

The current RBEvaluation object we are using to perform the Evaluation stage of the reduced basis method.

Definition at line 757 of file rb_construction.h.

◆ rel_training_tolerance

Real libMesh::RBConstruction::rel_training_tolerance

private

Relative and absolute tolerances for training reduced basis using the Greedy scheme.

Definition at line 801 of file rb_construction.h.

Referenced by get_rel_training_tolerance(), and set_rel_training_tolerance().

◆ rhs

NumericVector<Number>* libMesh::ExplicitSystem::rhs

inherited

The system matrix. Implicit systems are characterized by the need to solve the linear system Ax=b. This is the right-hand-side vector b.

Definition at line 114 of file explicit_system.h.

Referenced by libMesh::__libmesh_petsc_diff_solver_residual(), libMesh::ExplicitSystem::add_system_rhs(), libMesh::ImplicitSystem::assemble(), libMesh::ImplicitSystem::assemble_residual_derivatives(), libMesh::FEMSystem::assembly(), libMesh::LinearImplicitSystem::assembly(), libMesh::NonlinearImplicitSystem::assembly(), libMesh::Problem_Interface::computeF(), libMesh::ContinuationSystem::continuation_solve(), DMlibMeshFunction(), libMesh::ImplicitSystem::forward_qoi_parameter_sensitivity(), libMesh::NewtonSolver::line_search(), libMesh::ImplicitSystem::qoi_parameter_hessian(), libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product(), libMesh::NewtonSolver::solve(), libMesh::PetscDiffSolver::solve(), libMesh::FrequencySystem::solve(), libMesh::LinearImplicitSystem::solve(), libMesh::NonlinearImplicitSystem::solve(), libMesh::ContinuationSystem::solve_tangent(), libMesh::NewmarkSystem::update_rhs(), libMesh::ImplicitSystem::weighted_sensitivity_adjoint_solve(), and libMesh::ImplicitSystem::weighted_sensitivity_solve().

◆ serial_training_set

bool libMesh::RBConstructionBase< LinearImplicitSystem >::serial_training_set

protectedinherited

This boolean flag indicates whether or not the training set should be the same on all processors. By default it is false, but in the case of the Empirical Interpolation Method (RBEIMConstruction), for example, we need the training set to be identical on all processors.

Definition at line 247 of file rb_construction_base.h.

◆ skip_degenerate_sides

bool libMesh::RBConstruction::skip_degenerate_sides

In some cases meshes are intentionally created with degenerate sides as a way to represent, say, triangles using a hex-only mesh. In this situation we should detect and skip any degenerate sides in order to prevent zero or negative element Jacobian errors.

Definition at line 531 of file rb_construction.h.

◆ skip_residual_in_train_reduced_basis

bool libMesh::RBConstruction::skip_residual_in_train_reduced_basis

Boolean flag to indicate if we skip residual calculations in train_reduced_basis. This should only be used in special cases, e.g. when we know a priori that we want exactly one basis function and hence we do not need the residual based error indicator.

Definition at line 508 of file rb_construction.h.

◆ solution

std::unique_ptr<NumericVector<Number> > libMesh::System::solution

inherited

Data structure to hold solution values.

Definition at line 1523 of file system.h.

Referenced by libMesh::__libmesh_petsc_diff_solver_jacobian(), libMesh::__libmesh_petsc_diff_solver_residual(), libMesh::ExactSolution::_compute_error(), libMesh::UniformRefinementEstimator::_estimate_error(), libMesh::NewmarkSolver::advance_timestep(), libMesh::AdaptiveTimeSolver::advance_timestep(), libMesh::UnsteadySolver::advance_timestep(), libMesh::ContinuationSystem::apply_predictor(), libMesh::FEMSystem::assembly(), libMesh::LinearImplicitSystem::assembly(), libMesh::EquationSystems::build_parallel_elemental_solution_vector(), libMesh::EquationSystems::build_parallel_solution_vector(), libMesh::System::clear(), libMesh::System::compare(), libMesh::NewmarkSolver::compute_initial_accel(), libMesh::Problem_Interface::computeF(), libMesh::Problem_Interface::computeJacobian(), libMesh::Problem_Interface::computePreconditioner(), libMesh::ContinuationSystem::continuation_solve(), libMesh::ExodusII_IO::copy_elemental_solution(), libMesh::ExodusII_IO::copy_nodal_solution(), libMesh::GMVIO::copy_nodal_solution(), DMCreateGlobalVector_libMesh(), DMlibMeshFunction(), DMlibMeshJacobian(), libMesh::UnsteadySolver::du(), libMesh::DofMap::enforce_constraints_exactly(), libMesh::WeightedPatchRecoveryErrorEstimator::estimate_error(), libMesh::PatchRecoveryErrorEstimator::estimate_error(), libMesh::JumpErrorEstimator::estimate_error(), libMesh::AdjointRefinementEstimator::estimate_error(), libMesh::AdjointResidualErrorEstimator::estimate_error(), libMesh::ExactErrorEstimator::estimate_error(), libMesh::CondensedEigenSystem::get_eigenpair(), libMesh::EigenSystem::get_eigenpair(), libMesh::System::init_data(), libMesh::ContinuationSystem::initialize_tangent(), libMesh::libmesh_petsc_snes_jacobian(), libMesh::libmesh_petsc_snes_postcheck(), libMesh::libmesh_petsc_snes_residual_helper(), libMesh::DofMap::max_constraint_error(), libMesh::FEMSystem::mesh_position_get(), libMesh::ErrorVector::plot_error(), libMesh::ImplicitSystem::qoi_parameter_hessian(), libMesh::ImplicitSystem::qoi_parameter_hessian_vector_product(), libMesh::System::re_update(), libMesh::System::read_legacy_data(), libMesh::System::read_parallel_data(), libMesh::System::read_serialized_data(), libMesh::System::reinit(), libMesh::System::restrict_vectors(), libMesh::MemorySolutionHistory::retrieve(), libMesh::ContinuationSystem::save_current_solution(), libMesh::TwostepTimeSolver::solve(), libMesh::NewtonSolver::solve(), libMesh::PetscDiffSolver::solve(), libMesh::FrequencySystem::solve(), libMesh::LinearImplicitSystem::solve(), libMesh::NonlinearImplicitSystem::solve(), libMesh::ContinuationSystem::solve_tangent(), libMesh::MemorySolutionHistory::store(), libMesh::System::update(), libMesh::System::update_global_solution(), libMesh::ContinuationSystem::update_solution(), libMesh::NewmarkSystem::update_u_v_a(), libMesh::System::write_parallel_data(), and libMesh::System::write_serialized_data().

◆ store_non_dirichlet_operators

bool libMesh::RBConstruction::store_non_dirichlet_operators

Boolean flag to indicate whether we store a second copy of each affine operator and vector which does not have Dirichlet bcs enforced.

Definition at line 546 of file rb_construction.h.

◆ time

Real libMesh::System::time

inherited

For time-dependent problems, this is the time t at the beginning of the current timestep.

Note: For DifferentiableSystem users: do not access this time during an assembly! Use the DiffContext::time value instead to get correct results.

Definition at line 1545 of file system.h.

Referenced by libMesh::UnsteadySolver::adjoint_advance_timestep(), libMesh::AdaptiveTimeSolver::advance_timestep(), libMesh::UnsteadySolver::advance_timestep(), libMesh::ExactErrorEstimator::find_squared_element_error(), libMesh::MemorySolutionHistory::find_stored_entry(), libMesh::WeightedPatchRecoveryErrorEstimator::EstimateError::operator()(), libMesh::System::reinit_constraints(), libMesh::MemorySolutionHistory::retrieve(), libMesh::TwostepTimeSolver::solve(), and libMesh::MemorySolutionHistory::store().

◆ training_error_bounds

std::vector<Real> libMesh::RBConstruction::training_error_bounds

Vector storing the values of the error bound for each parameter in the training set — the parameter giving the largest error bound is chosen for the next snapshot in the Greedy basis training.

Definition at line 450 of file rb_construction.h.

◆ truth_outputs

std::vector<Number > libMesh::RBConstruction::truth_outputs

Vector storing the truth output values from the most recent truth solve.

Definition at line 476 of file rb_construction.h.

◆ use_empty_rb_solve_in_greedy

bool libMesh::RBConstruction::use_empty_rb_solve_in_greedy

A boolean flag to indicate whether or not we initialize the Greedy algorithm by performing rb_solves on the training set with an "empty" (i.e. N=0) reduced basis space.

Definition at line 553 of file rb_construction.h.

◆ use_fixed_solution

bool libMesh::System::use_fixed_solution

inherited

A boolean to be set to true by systems using elem_fixed_solution, for optional use by e.g. stabilized methods. False by default.

Note: For FEMSystem users, if this variable is set to true, it must be before init_data() is called.

Definition at line 1493 of file system.h.

Referenced by libMesh::EulerSolver::_general_residual(), libMesh::Euler2Solver::_general_residual(), libMesh::SteadySolver::_general_residual(), libMesh::NewmarkSolver::_general_residual(), libMesh::DifferentiableSystem::clear(), libMesh::DiffContext::DiffContext(), and libMesh::FEMContext::pre_fe_reinit().

◆ verbose_mode

bool libMesh::RBParametrized::verbose_mode

inherited

Public boolean to toggle verbose mode.

Definition at line 170 of file rb_parametrized.h.

◆ zero_out_matrix_and_rhs

bool libMesh::ImplicitSystem::zero_out_matrix_and_rhs

inherited

By default, the system will zero out the matrix and the right hand side. If this flag is false, it is the responsibility of the client code to take care of setting these to zero before assembly begins

Definition at line 380 of file implicit_system.h.

Referenced by libMesh::ImplicitSystem::assemble().

The documentation for this class was generated from the following file:

rb_construction.h

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Static Protected Attributes

Private Attributes

Detailed Description

Member Typedef Documentation

◆ const_matrices_iterator

◆ const_vectors_iterator

◆ Counts [1/2]

◆ Counts [2/2]

◆ GradientFunctionPointer

◆ matrices_iterator

◆ Parent

◆ sys_type

◆ ValueFunctionPointer

◆ vectors_iterator

Constructor & Destructor Documentation

◆ RBConstruction()

◆ ~RBConstruction()

Member Function Documentation

◆ activate()

◆ active()

◆ add_adjoint_rhs()

◆ add_adjoint_solution()

◆ add_matrix()

◆ add_scaled_Aq()

◆ add_scaled_matrix_and_vector()

◆ add_sensitivity_rhs()

◆ add_sensitivity_solution()

◆ add_variable() [1/2]

◆ add_variable() [2/2]

◆ add_variables() [1/2]

◆ add_variables() [2/2]

◆ add_vector()

◆ add_weighted_sensitivity_adjoint_solution()

◆ add_weighted_sensitivity_solution()

◆ adjoint_qoi_parameter_sensitivity()

◆ adjoint_solve()

◆ allocate_data_structures()

◆ assemble()

◆ assemble_affine_expansion()

◆ assemble_all_affine_operators()

◆ assemble_all_affine_vectors()

◆ assemble_all_output_vectors()

◆ assemble_Aq_matrix()

◆ assemble_Fq_vector()

◆ assemble_inner_product_matrix()

◆ assemble_misc_matrices()

◆ assemble_qoi()

◆ assemble_qoi_derivative()

◆ assemble_residual_derivatives()

◆ assembly()

◆ attach_assemble_function()

◆ attach_assemble_object()

◆ attach_constraint_function()

◆ attach_constraint_object()

◆ attach_init_function()

◆ attach_init_object()

◆ attach_QOI_derivative()

◆ attach_QOI_derivative_object()

◆ attach_QOI_function()

◆ attach_QOI_object()

◆ attach_shell_matrix()

◆ boundary_project_solution() [1/2]

◆ boundary_project_solution() [2/2]

◆ boundary_project_vector() [1/2]

◆ boundary_project_vector() [2/2]

◆ broadcast_parameters()

◆ build_context()

◆ build_zero_dirichlet_boundary_object()

◆ calculate_norm() [1/2]

◆ calculate_norm() [2/2]

◆ check_convergence()

◆ clear()