concepts::PETScFabric Class Reference

Fabric class for PETSc solvers. More...

#include <PETScFabric.hh>

Inheritance diagram for concepts::PETScFabric:

Collaboration diagram for concepts::PETScFabric:

List of all members.

Public Member Functions
virtual Operator< Real > *	operator() (Operator< Real > &matrix)
virtual Operator< Real > *	operator() (SparseMatrix< Real > &matrix)
virtual Operator< Real > *	operator() (Operator< Real > &matrix)=0
	Creates a linear solver from matrix.
	PETScFabric (const Real maxeps, const std::string ksptype, const std::string pctype=std::string("none"))
	Constructor.
	~PETScFabric ()
Protected Member Functions
virtual std::ostream &	info (std::ostream &os) const
	Returns information in an output stream.
Private Attributes
const std::string	ksptype_
	Type of Krylov Subspace Solver.
const Real	maxeps_
	Maximal residual.
const std::string	pctype_
	Type of preconditioner.
std::list< concepts::PETScMat * >	petscmat_
	Created auxiliary PETSc Matrices.

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Detailed Description

Fabric class for PETSc solvers.

Creates a PETScMat if Operator is not a PETScMat and a preconditioner is desired. This may have severe disadvantages:

• It is always memory inefficent.
• It may be O(n^2) slow, if Operator is not Matrix, LiCo, LiCoI or Compose
• It may cause a segmentation fault if the fabric goes out of scope before any of the solvers created like this. Make sure this does not happen.

Author:

Christoph Winkelmann, 2004

Definition at line 27 of file PETScFabric.hh.

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Constructor & Destructor Documentation

concepts::PETScFabric::PETScFabric	(	const Real	maxeps,
		const std::string	ksptype,
		const std::string	pctype = std::string("none")
	)		[inline]

Constructor.

Parameters:

maxeps	Maximal residual
ksptype	Type of Krylov Subspace Solver
pctype	Type of preconditioner

Definition at line 34 of file PETScFabric.hh.

concepts::PETScFabric::~PETScFabric

(

)

[inline]

Definition at line 53 of file PETScFabric.hh.

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Member Function Documentation

virtual std::ostream& concepts::PETScFabric::info

(

std::ostream &

os

)

const [inline, protected, virtual]

Returns information in an output stream.

Reimplemented from concepts::OutputOperator.

Definition at line 60 of file PETScFabric.hh.

virtual Operator<Real >* concepts::SolverFabric< Real >::operator()

(

SparseMatrix< Real > &

matrix

)

[inline, virtual, inherited]

Definition at line 26 of file solverFabric.hh.

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virtual Operator<Real >* concepts::SolverFabric< Real >::operator()

(

Operator< Real > &

matrix

)

[pure virtual, inherited]

Creates a linear solver from matrix.

The caller is responsible for the deletion of the delivered object.

Returns:

Reference to the linear solver

Implemented in vectorial::BramblePasciakFabric, and vectorial::CGUzawaFabric.

virtual Operator<Real>* concepts::PETScFabric::operator()

(

Operator< Real > &

matrix

)

[inline, virtual]

Definition at line 37 of file PETScFabric.hh.

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Member Data Documentation

const std::string concepts::PETScFabric::ksptype_ [private]

Type of Krylov Subspace Solver.

Definition at line 68 of file PETScFabric.hh.

const Real concepts::PETScFabric::maxeps_ [private]

Maximal residual.

Definition at line 66 of file PETScFabric.hh.

const std::string concepts::PETScFabric::pctype_ [private]

Type of preconditioner.

Definition at line 70 of file PETScFabric.hh.

std::list<concepts::PETScMat*> concepts::PETScFabric::petscmat_ [private]

Created auxiliary PETSc Matrices.

Definition at line 72 of file PETScFabric.hh.

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

• operator/PETScFabric.hh