Direct sparse solver using UMFPACK. More...

#include <solvers.hpp>

Inheritance diagram for mfem::UMFPackSolver:

Collaboration diagram for mfem::UMFPackSolver:

Public Member Functions
	UMFPackSolver (bool _use_long_ints=false)
	For larger matrices, if the solver fails, set the parameter _use_long_ints = true. More...

	UMFPackSolver (SparseMatrix &A, bool _use_long_ints=false)
	Factorize the given SparseMatrix using the defaults. For larger matrices, if the solver fails, set the parameter _use_long_ints = true. More...

virtual void	SetOperator (const Operator &op)
	Factorize the given Operator op which must be a SparseMatrix. More...

void	SetPrintLevel (int print_lvl)
	Set the print level field in the Control data member. More...

virtual void	Mult (const Vector &b, Vector &x) const
	Operator application: `y=A(x)`. More...

virtual void	MultTranspose (const Vector &b, Vector &x) const
	Action of the transpose operator: `y=A^t(x)`. The default behavior in class Operator is to generate an error. More...

virtual	~UMFPackSolver ()

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 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...

Public Attributes
double	Control [UMFPACK_CONTROL]

double	Info [UMFPACK_INFO]

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
void	Init ()

Protected Attributes
bool	use_long_ints

SparseMatrix *	mat

void *	Numeric

SuiteSparse_long *	AI

SuiteSparse_long *	AJ

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 { 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...

Detailed Description

Direct sparse solver using UMFPACK.

Definition at line 343 of file solvers.hpp.

Constructor & Destructor Documentation

mfem::UMFPackSolver::UMFPackSolver ( bool _use_long_ints = false )

inline

For larger matrices, if the solver fails, set the parameter _use_long_ints = true.

Definition at line 359 of file solvers.hpp.

mfem::UMFPackSolver::UMFPackSolver	(	SparseMatrix &	A,
		bool	_use_long_ints = `false`
	)

inline

Factorize the given SparseMatrix using the defaults. For larger matrices, if the solver fails, set the parameter _use_long_ints = true.

Definition at line 364 of file solvers.hpp.

mfem::UMFPackSolver::~UMFPackSolver ( )

virtual

Definition at line 1854 of file solvers.cpp.

Member Function Documentation

void mfem::UMFPackSolver::Init ( )

protected

Definition at line 1673 of file solvers.cpp.

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

virtual

Operator application: y=A(x).

Implements mfem::Operator.

Definition at line 1788 of file solvers.cpp.

void mfem::UMFPackSolver::MultTranspose	(	const Vector &	x,
		Vector &	y
	)		const

virtual

Action of the transpose operator: y=A^t(x). The default behavior in class Operator is to generate an error.

Reimplemented from mfem::Operator.

Definition at line 1820 of file solvers.cpp.

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

virtual

Factorize the given Operator op which must be a SparseMatrix.

The factorization uses the parameters set in the Control data member.

Note: This method calls SparseMatrix::SortColumnIndices() with op, modifying the matrix if the column indices are not already sorted.

Implements mfem::Solver.

Definition at line 1688 of file solvers.cpp.

void mfem::UMFPackSolver::SetPrintLevel ( int print_lvl )

inline

Set the print level field in the Control data member.

Definition at line 375 of file solvers.hpp.

Member Data Documentation

SuiteSparse_long* mfem::UMFPackSolver::AI

protected

Definition at line 349 of file solvers.hpp.

SuiteSparse_long * mfem::UMFPackSolver::AJ

protected

Definition at line 349 of file solvers.hpp.

double mfem::UMFPackSolver::Control[UMFPACK_CONTROL]

Definition at line 354 of file solvers.hpp.

double mfem::UMFPackSolver::Info[UMFPACK_INFO]

mutable

Definition at line 355 of file solvers.hpp.

SparseMatrix* mfem::UMFPackSolver::mat

protected

Definition at line 347 of file solvers.hpp.

void* mfem::UMFPackSolver::Numeric

protected

Definition at line 348 of file solvers.hpp.

bool mfem::UMFPackSolver::use_long_ints

protected

Definition at line 346 of file solvers.hpp.

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

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation