Conjugate gradient method. More...

#include <solvers.hpp>

Inheritance diagram for mfem::CGSolver:

Collaboration diagram for mfem::CGSolver:

Public Member Functions
	CGSolver ()

	CGSolver (MPI_Comm _comm)

virtual void	SetOperator (const Operator &op)
	Also calls SetOperator for the preconditioner if there is one. More...

virtual void	Mult (const Vector &x, Vector &y) const
	Operator application. More...

Public Member Functions inherited from mfem::IterativeSolver
	IterativeSolver ()

	IterativeSolver (MPI_Comm _comm)

void	SetRelTol (double rtol)

void	SetAbsTol (double atol)

void	SetMaxIter (int max_it)

void	SetPrintLevel (int print_lvl)

int	GetNumIterations ()

int	GetConverged ()

double	GetFinalNorm ()

virtual void	SetPreconditioner (Solver &pr)
	This should be called before SetOperator. More...

Public Member Functions inherited from mfem::Solver
	Solver (int s=0, bool iter_mode=false)

	Solver (int h, int w, bool iter_mode=false)
	Initialize a Solver with height 'h' and width 'w'. More...

Public Member Functions inherited from mfem::Operator
	Operator (int s=0)
	Construct a square Operator with given size s (default 0) More...

	Operator (int h, int w)

int	Height () const
	Get the height (size of output) of the Operator. Synonym with NumRows. More...

int	NumRows () const

int	Width () const
	Get the width (size of input) of the Operator. Synonym with NumCols. More...

int	NumCols () const

virtual void	MultTranspose (const Vector &x, Vector &y) const
	Action of the transpose operator. More...

virtual Operator &	GetGradient (const Vector &x) const
	Evaluate the gradient operator at the point x. More...

void	PrintMatlab (std::ostream &out, int n=0, int m=0)
	Prints operator with input size n and output size m in matlab format. More...

virtual	~Operator ()

Protected Member Functions
void	UpdateVectors ()

Protected Member Functions inherited from mfem::IterativeSolver
double	Dot (const Vector &x, const Vector &y) const

double	Norm (const Vector &x) const

Protected Attributes
Vector	r

Vector	d

Vector	z

Protected Attributes inherited from mfem::IterativeSolver
const Operator *	oper

Solver *	prec

int	max_iter

int	print_level

double	rel_tol

double	abs_tol

int	final_iter

int	converged

double	final_norm

Protected Attributes inherited from mfem::Operator
int	height

int	width

Additional Inherited Members
Public Attributes inherited from mfem::Solver
bool	iterative_mode
	If true, use the second argument of Mult as an initial guess. More...

Detailed Description

Conjugate gradient method.

Definition at line 109 of file solvers.hpp.

Constructor & Destructor Documentation

mfem::CGSolver::CGSolver ( )

inline

Definition at line 117 of file solvers.hpp.

mfem::CGSolver::CGSolver ( MPI_Comm _comm )

inline

Definition at line 120 of file solvers.hpp.

Member Function Documentation

void mfem::CGSolver::Mult	(	const Vector &	x,
		Vector &	y
	)		const

virtual

Operator application.

Implements mfem::Operator.

Definition at line 285 of file solvers.cpp.

virtual void mfem::CGSolver::SetOperator ( const Operator & op )

inlinevirtual

Also calls SetOperator for the preconditioner if there is one.

Reimplemented from mfem::IterativeSolver.

Definition at line 123 of file solvers.hpp.

void mfem::CGSolver::UpdateVectors ( )

protected

Definition at line 278 of file solvers.cpp.

Member Data Documentation

Vector mfem::CGSolver::d

mutableprotected

Definition at line 112 of file solvers.hpp.

Vector mfem::CGSolver::r

mutableprotected

Definition at line 112 of file solvers.hpp.

Vector mfem::CGSolver::z

mutableprotected

Definition at line 112 of file solvers.hpp.

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

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation