MFEM  v3.3.2
Finite element discretization library
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mfem::GMRESSolver Class Reference

GMRES method. More...

#include <solvers.hpp>

Inheritance diagram for mfem::GMRESSolver:
Collaboration diagram for mfem::GMRESSolver:

Public Member Functions

 GMRESSolver ()
 GMRESSolver (MPI_Comm _comm)
void SetKDim (int dim)
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
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...
- 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 OperatorGetGradient (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 OperatorGetProlongation () const
 Prolongation operator from linear algebra (linear system) vectors, to input vectors for the operator. NULL means identity. More...
virtual const OperatorGetRestriction () 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...

Protected Attributes

int m
- Protected Attributes inherited from mfem::IterativeSolver
const Operatoroper
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 {
 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

GMRES method.

Definition at line 143 of file solvers.hpp.

Constructor & Destructor Documentation

mfem::GMRESSolver::GMRESSolver ( )

Definition at line 149 of file solvers.hpp.

mfem::GMRESSolver::GMRESSolver ( MPI_Comm  _comm)

Definition at line 152 of file solvers.hpp.

Member Function Documentation

void mfem::GMRESSolver::Mult ( const Vector x,
Vector y 
) const

Operator application: y=A(x).

Implements mfem::Operator.

Definition at line 522 of file solvers.cpp.

void mfem::GMRESSolver::SetKDim ( int  dim)

Definition at line 155 of file solvers.hpp.

Member Data Documentation

int mfem::GMRESSolver::m

Definition at line 146 of file solvers.hpp.

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