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

#include <petsc.h>

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

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

	KrylovSolver (const KrylovSolver &solver)=delete

	KrylovSolver (KrylovSolver &&solver)
	Move constructor.

	~KrylovSolver ()
	Destructor.

KrylovSolver &	operator= (const KrylovSolver &)=delete

KrylovSolver &	operator= (KrylovSolver &&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.

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

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: