petsc_linear_solver.h File Reference

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Classes
class	libMesh::PetscMatrix< T >
	SparseMatrix interface to PETSc Mat. More...
class	libMesh::PetscLinearSolver< T >

Namespaces
	libMesh

Functions
PetscErrorCode	libmesh_petsc_preconditioner_setup (void *ctx)
PetscErrorCode	libmesh_petsc_preconditioner_apply (void *ctx, Vec x, Vec y)
PetscErrorCode	libmesh_petsc_preconditioner_setup (PC)
PetscErrorCode	libmesh_petsc_preconditioner_apply (PC, Vec x, Vec y)
PetscErrorCode	__libmesh_petsc_preconditioner_setup (void *ctx)
PetscErrorCode	__libmesh_petsc_preconditioner_apply (void *ctx, Vec x, Vec y)
PetscErrorCode	__libmesh_petsc_preconditioner_setup (PC)
PetscErrorCode	__libmesh_petsc_preconditioner_apply (PC, Vec x, Vec y)

Function Documentation

__libmesh_petsc_preconditioner_apply() [1/2]

PetscErrorCode __libmesh_petsc_preconditioner_apply	(	void *	ctx,
		Vec	x,
		Vec	y
	)

This function is called by PETSc to actually apply the preconditioner. ctx will hold the Preconditioner.

Definition at line 110 of file petsc_linear_solver.C.

References libMesh::libmesh_petsc_preconditioner_apply().

  {
    libmesh_deprecated();
    return libmesh_petsc_preconditioner_apply(ctx, x, y);
  }

__libmesh_petsc_preconditioner_apply() [2/2]

PetscErrorCode __libmesh_petsc_preconditioner_apply	(	PC	,
		Vec	x,
		Vec	y
	)

Definition at line 123 of file petsc_linear_solver.C.

References libMesh::libmesh_petsc_preconditioner_apply().

  {
    libmesh_deprecated();
    return libmesh_petsc_preconditioner_apply(pc, x, y);
  }

__libmesh_petsc_preconditioner_setup() [1/2]

PetscErrorCode __libmesh_petsc_preconditioner_setup

(

void *

ctx

)

This function is called by PETSc to initialize the preconditioner. ctx will hold the Preconditioner.

Definition at line 104 of file petsc_linear_solver.C.

References libMesh::libmesh_petsc_preconditioner_setup().

  {
    libmesh_deprecated();
    return libmesh_petsc_preconditioner_setup(ctx);
  }

__libmesh_petsc_preconditioner_setup() [2/2]

PetscErrorCode __libmesh_petsc_preconditioner_setup

(

PC

)

Definition at line 117 of file petsc_linear_solver.C.

References libMesh::libmesh_petsc_preconditioner_setup().

  {
    libmesh_deprecated();
    return libmesh_petsc_preconditioner_setup(pc);
  }

libmesh_petsc_preconditioner_apply() [1/2]

PetscErrorCode libmesh_petsc_preconditioner_apply	(	void *	ctx,
		Vec	x,
		Vec	y
	)

This function is called by PETSc to actually apply the preconditioner. ctx will hold the Preconditioner.

Definition at line 61 of file petsc_linear_solver.C.

Referenced by __libmesh_petsc_preconditioner_apply(), libMesh::PetscNonlinearSolver< Number >::init(), and libMesh::PetscLinearSolver< T >::init().

  {
    Preconditioner<Number> * preconditioner = static_cast<Preconditioner<Number> *>(ctx);

    PetscVector<Number> x_vec(x, preconditioner->comm());
    PetscVector<Number> y_vec(y, preconditioner->comm());

    preconditioner->apply(x_vec,y_vec);

    return 0;
  }

libmesh_petsc_preconditioner_apply() [2/2]

PetscErrorCode libmesh_petsc_preconditioner_apply	(	PC	,
		Vec	x,
		Vec	y
	)

Definition at line 87 of file petsc_linear_solver.C.

References CHKERRQ(), and ierr.

  {
    void * ctx;
    PetscErrorCode ierr = PCShellGetContext(pc,&ctx);CHKERRQ(ierr);
    Preconditioner<Number> * preconditioner = static_cast<Preconditioner<Number> *>(ctx);

    PetscVector<Number> x_vec(x, preconditioner->comm());
    PetscVector<Number> y_vec(y, preconditioner->comm());

    preconditioner->apply(x_vec,y_vec);

    return 0;
  }

libmesh_petsc_preconditioner_setup() [1/2]

PetscErrorCode libmesh_petsc_preconditioner_setup

(

void *

ctx

)

This function is called by PETSc to initialize the preconditioner. ctx will hold the Preconditioner.

Definition at line 48 of file petsc_linear_solver.C.

Referenced by __libmesh_petsc_preconditioner_setup(), libMesh::PetscNonlinearSolver< Number >::init(), and libMesh::PetscLinearSolver< T >::init().

  {
    Preconditioner<Number> * preconditioner = static_cast<Preconditioner<Number> *>(ctx);

    if (!preconditioner->initialized())
      libmesh_error_msg("Preconditioner not initialized!  Make sure you call init() before solve!");

    preconditioner->setup();

    return 0;
  }

libmesh_petsc_preconditioner_setup() [2/2]

PetscErrorCode libmesh_petsc_preconditioner_setup

(

PC

)

Definition at line 73 of file petsc_linear_solver.C.

References CHKERRQ(), and ierr.

  {
    void * ctx;
    PetscErrorCode ierr = PCShellGetContext(pc,&ctx);CHKERRQ(ierr);
    Preconditioner<Number> * preconditioner = static_cast<Preconditioner<Number> *>(ctx);

    if (!preconditioner->initialized())
      libmesh_error_msg("Preconditioner not initialized!  Make sure you call init() before solve!");

    preconditioner->setup();

    return 0;
  }