This class implements Krylov methods for linear systems of the form Ax = b. It is a wrapper for the Krylov solvers of PETSc. More...

Public Member Functions
	PETScKrylovSolver (MPI_Comm comm)
	Create Krylov solver for a particular method and named preconditioner.

	PETScKrylovSolver (KSP ksp, bool inc_ref_count)
	Create solver wrapper of a PETSc KSP object. More...

	PETScKrylovSolver (const PETScKrylovSolver &solver)=delete

	PETScKrylovSolver (PETScKrylovSolver &&solver)
	Move constructor.

	~PETScKrylovSolver ()
	Destructor.

PETScKrylovSolver &	operator= (const PETScKrylovSolver &)=delete

PETScKrylovSolver &	operator= (PETScKrylovSolver &&solver)
	Move assignment.

void	set_operator (const Mat A)
	Set operator (Mat)

void	set_operators (const Mat A, const Mat P)
	Set operator and preconditioner matrix (Mat)

int	solve (Vec x, const Vec b, bool transpose=false) const
	Solve linear system Ax = b and return number of iterations (A^t x = b if transpose is true)

void	set_options_prefix (std::string options_prefix)
	Sets the prefix used by PETSc when searching the PETSc options database.

std::string	get_options_prefix () const
	Returns the prefix used by PETSc when searching the PETSc options database.

void	set_from_options () const
	Set options from PETSc options database.

KSP	ksp () const
	Return PETSc KSP pointer.

void	set_dm (DM dm)
	Set the DM.

void	set_dm_active (bool val)
	Activate/deactivate DM.

Detailed Description

This class implements Krylov methods for linear systems of the form Ax = b. It is a wrapper for the Krylov solvers of PETSc.

Constructor & Destructor Documentation

PETScKrylovSolver::PETScKrylovSolver	(	KSP	ksp,
		bool	inc_ref_count
	)

Create solver wrapper of a PETSc KSP object.

Parameters

[in]	ksp	The PETSc KSP object. It should already have been created
[in]	inc_ref_count	Increment the reference count on `ksp` if true

The documentation for this class was generated from the following files: