concepts::PETScFabric Class Referenceabstract

Fabric class for PETSc solvers. More...

#include <PETScFabric.hh>

Inheritance diagram for concepts::PETScFabric:

Public Member Functions
virtual Operator< Real > *	operator() ()=0
	Creates a linear solver from matrix. More...
virtual Operator< Real > *	operator() (Operator< Real > &matrix)
virtual Operator< Real > *	operator() (Operator< Real > &matrix)=0
	PETScFabric (const Real maxeps, const std::string ksptype, const std::string pctype=std::string("none"))
	Constructor. More...
	~PETScFabric ()

Protected Member Functions
virtual std::ostream &	info (std::ostream &os) const

Private Attributes
const std::string	ksptype_
	Type of Krylov Subspace Solver. More...
const Real	maxeps_
	Maximal residual. More...
const std::string	pctype_
	Type of preconditioner. More...
std::list< concepts::PETScMat * >	petscmat_
	Created auxiliary PETSc Matrices. More...

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 30 of file PETScFabric.hh.

Constructor & Destructor Documentation

PETScFabric()

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 37 of file PETScFabric.hh.

~PETScFabric()

concepts::PETScFabric::~PETScFabric ( )

inline

Definition at line 56 of file PETScFabric.hh.

Member Function Documentation

info()

virtual std::ostream& concepts::PETScFabric::info ( std::ostream &  os ) const

inlineprotectedvirtual

Definition at line 63 of file PETScFabric.hh.

operator()() [1/3]

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

pure virtualinherited

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 concepts::UmfpackFabric, concepts::SuperLUFabric< F >, concepts::MumpsOverlapFabric< F >, and concepts::MumpsFabric< F >.

operator()() [2/3]

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

inlinevirtual

Definition at line 40 of file PETScFabric.hh.

operator()() [3/3]

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

pure virtualinherited

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

Member Data Documentation

ksptype_

const std::string concepts::PETScFabric::ksptype_

private

Type of Krylov Subspace Solver.

Definition at line 71 of file PETScFabric.hh.

maxeps_

const Real concepts::PETScFabric::maxeps_

private

Maximal residual.

Definition at line 69 of file PETScFabric.hh.

pctype_

const std::string concepts::PETScFabric::pctype_

private

Type of preconditioner.

Definition at line 73 of file PETScFabric.hh.

petscmat_

std::list<concepts::PETScMat*> concepts::PETScFabric::petscmat_

private

Created auxiliary PETSc Matrices.

Definition at line 75 of file PETScFabric.hh.

---

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

• operator/PETScFabric.hh