PCG solver in hypre. More...

#include <hypre.hpp>

Inheritance diagram for mfem::HyprePCG:

Collaboration diagram for mfem::HyprePCG:

Public Member Functions
	HyprePCG (HypreParMatrix &_A)

void	SetTol (double tol)

void	SetMaxIter (int max_iter)

void	SetLogging (int logging)

void	SetPrintLevel (int print_lvl)

void	SetPreconditioner (HypreSolver &precond)
	Set the hypre solver to be used as a preconditioner. More...

void	SetResidualConvergenceOptions (int res_frequency=-1, double rtol=0.0)

void	SetZeroInintialIterate ()
	non-hypre setting More...

void	GetNumIterations (int &num_iterations)

virtual	operator HYPRE_Solver () const
	The typecast to HYPRE_Solver returns the internal pcg_solver. More...

virtual HYPRE_PtrToParSolverFcn	SetupFcn () const
	PCG Setup function. More...

virtual HYPRE_PtrToParSolverFcn	SolveFcn () const
	PCG Solve function. More...

virtual void	Mult (const HypreParVector &b, HypreParVector &x) const
	Solve Ax=b with hypre's PCG. More...

virtual	~HyprePCG ()

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

	HypreSolver (HypreParMatrix *_A)

virtual void	SetOperator (const Operator &op)
	Set/update the solver for the given operator. More...

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

virtual	~HypreSolver ()

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 MemoryClass	GetMemoryClass () const
	Return the MemoryClass preferred by the Operator. 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...

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 Attributes inherited from mfem::HypreSolver
HypreParMatrix *	A
	The linear system matrix. More...

HypreParVector *	B
	Right-hand side and solution vector. More...

HypreParVector *	X

int	setup_called
	Was hypre's Setup function called already? More...

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...

Detailed Description

PCG solver in hypre.

Definition at line 706 of file hypre.hpp.

Constructor & Destructor Documentation

mfem::HyprePCG::HyprePCG ( HypreParMatrix & _A )

Definition at line 2171 of file hypre.cpp.

mfem::HyprePCG::~HyprePCG ( )

virtual

Definition at line 2299 of file hypre.cpp.

Member Function Documentation

void mfem::HyprePCG::GetNumIterations ( int & num_iterations )

inline

Definition at line 730 of file hypre.hpp.

void mfem::HyprePCG::Mult	(	const HypreParVector &	b,
		HypreParVector &	x
	)		const

virtual

Solve Ax=b with hypre's PCG.

Reimplemented from mfem::HypreSolver.

Definition at line 2223 of file hypre.cpp.

virtual mfem::HyprePCG::operator HYPRE_Solver ( ) const

inlinevirtual

The typecast to HYPRE_Solver returns the internal pcg_solver.

Implements mfem::HypreSolver.

Definition at line 738 of file hypre.hpp.

void mfem::HyprePCG::SetLogging ( int logging )

Definition at line 2192 of file hypre.cpp.

void mfem::HyprePCG::SetMaxIter ( int max_iter )

Definition at line 2187 of file hypre.cpp.

void mfem::HyprePCG::SetPreconditioner ( HypreSolver & precond )

Set the hypre solver to be used as a preconditioner.

Definition at line 2202 of file hypre.cpp.

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

Definition at line 2197 of file hypre.cpp.

void mfem::HyprePCG::SetResidualConvergenceOptions	(	int	res_frequency = `-1`,
		double	rtol = `0.0`
	)

Use the L2 norm of the residual for measuring PCG convergence, plus (optionally) 1) periodically recompute true residuals from scratch; and 2) enable residual-based stopping criteria.

Definition at line 2210 of file hypre.cpp.

void mfem::HyprePCG::SetTol ( double tol )

Definition at line 2182 of file hypre.cpp.

virtual HYPRE_PtrToParSolverFcn mfem::HyprePCG::SetupFcn ( ) const

inlinevirtual

PCG Setup function.

Implements mfem::HypreSolver.

Definition at line 741 of file hypre.hpp.

void mfem::HyprePCG::SetZeroInintialIterate ( )

inline

non-hypre setting

Definition at line 728 of file hypre.hpp.