mfem::MINRESSolver Class Reference

MINRES method. More...

#include <solvers.hpp>

Inheritance diagram for mfem::MINRESSolver:

Collaboration diagram for mfem::MINRESSolver:

Public Member Functions
	MINRESSolver ()
	MINRESSolver (MPI_Comm _comm)
virtual void	SetPreconditioner (Solver &pr)
	This should be called before SetOperator. More...
virtual void	SetOperator (const Operator &op)
	Also calls SetOperator for the preconditioner if there is one. More...
virtual void	Mult (const Vector &b, Vector &x) const
	Operator application: y=A(x). 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 () const
int	GetConverged () const
double	GetFinalNorm () const
Public Member Functions inherited from mfem::Solver
	Solver (int s=0, bool iter_mode=false)
	Initialize a square Solver with size s. More...
	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)
	Construct an Operator with the given height (output size) and width (input size). More...
int	Height () const
	Get the height (size of output) of the Operator. Synonym with NumRows(). More...
int	NumRows () const
	Get the number of rows (size of output) of the Operator. Synonym with Height(). More...
int	Width () const
	Get the width (size of input) of the Operator. Synonym with NumCols(). More...
int	NumCols () const
	Get the number of columns (size of input) of the Operator. Synonym with Width(). More...
virtual void	MultTranspose (const Vector &x, Vector &y) const
	Action of the transpose operator: y=A^t(x). The default behavior in class Operator is to generate an error. More...
virtual Operator &	GetGradient (const Vector &x) const
	Evaluate the gradient operator at the point x. The default behavior in class Operator is to generate an error. More...
virtual const Operator *	GetProlongation () const
	Prolongation operator from linear algebra (linear system) vectors, to input vectors for the operator. NULL means identity. More...
virtual const Operator *	GetRestriction () const
	Restriction operator from input vectors for the operator to linear algebra (linear system) vectors. NULL means identity. More...
void	FormLinearSystem (const Array< int > &ess_tdof_list, Vector &x, Vector &b, Operator *&A, Vector &X, Vector &B, int copy_interior=0)
	Form a constrained linear system using a matrix-free approach. More...
virtual void	RecoverFEMSolution (const Vector &X, const Vector &b, Vector &x)
	Reconstruct a solution vector x (e.g. a GridFunction) from the solution X of a constrained linear system obtained from Operator::FormLinearSystem(). More...
void	PrintMatlab (std::ostream &out, int n=0, int m=0) const
	Prints operator with input size n and output size m in Matlab format. More...
virtual	~Operator ()
	Virtual destructor. More...
Type	GetType () const
	Return the type ID of the Operator class. More...

Protected Attributes
Vector	v0
Vector	v1
Vector	w0
Vector	w1
Vector	q
Vector	u1
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
	Dimension of the output / number of rows in the matrix. More...
int	width
	Dimension of the input / number of columns in the matrix. More...

Additional Inherited Members
Public Types inherited from mfem::Operator
enum	Type {   ANY_TYPE, MFEM_SPARSEMAT, Hypre_ParCSR, PETSC_MATAIJ,   PETSC_MATIS, PETSC_MATSHELL, PETSC_MATNEST, PETSC_MATHYPRE,   PETSC_MATGENERIC }
	Enumeration defining IDs for some classes derived from Operator. More...
Public Attributes inherited from mfem::Solver
bool	iterative_mode
	If true, use the second argument of Mult() as an initial guess. More...
Protected Member Functions inherited from mfem::IterativeSolver
double	Dot (const Vector &x, const Vector &y) const
double	Norm (const Vector &x) const

Detailed Description

MINRES method.

Definition at line 221 of file solvers.hpp.

Constructor & Destructor Documentation

mfem::MINRESSolver::MINRESSolver ( )

inline

Definition at line 228 of file solvers.hpp.

mfem::MINRESSolver::MINRESSolver ( MPI_Comm  _comm )

inline

Definition at line 231 of file solvers.hpp.

Member Function Documentation

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

virtual

Operator application: y=A(x).

Implements mfem::Operator.

Definition at line 1046 of file solvers.cpp.

void mfem::MINRESSolver::SetOperator ( const Operator &  op )

virtual

Also calls SetOperator for the preconditioner if there is one.

Reimplemented from mfem::IterativeSolver.

Definition at line 1032 of file solvers.cpp.

virtual void mfem::MINRESSolver::SetPreconditioner ( Solver &  pr )

inlinevirtual

This should be called before SetOperator.

Reimplemented from mfem::IterativeSolver.

Definition at line 234 of file solvers.hpp.

Member Data Documentation

Vector mfem::MINRESSolver::q

mutableprotected

Definition at line 224 of file solvers.hpp.

Vector mfem::MINRESSolver::u1

mutableprotected

Definition at line 225 of file solvers.hpp.

Vector mfem::MINRESSolver::v0

mutableprotected

Definition at line 224 of file solvers.hpp.

Vector mfem::MINRESSolver::v1

mutableprotected

Definition at line 224 of file solvers.hpp.

Vector mfem::MINRESSolver::w0

mutableprotected

Definition at line 224 of file solvers.hpp.

Vector mfem::MINRESSolver::w1

mutableprotected

Definition at line 224 of file solvers.hpp.

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

• linalg/solvers.hpp
• linalg/solvers.cpp