PETScPCPerm.C File Reference

Permutation for PETSc preconditioners. More...

#include "PETScPCPerm.h"
#include <iostream>

Include dependency graph for PETScPCPerm.C:

Macros
#define	PetscCall(x)   if (x) std::cerr <<"PetscFree failed "<< x << std::endl;
	Workaround for nonexisting macro in older PETSc versions.

Functions
PetscErrorCode	PCPermCreate (PCPerm **pcperm)
	Create the permutated preconditioner. More...
PetscErrorCode	PCPermSetUp (PC pc, IS *perm, Mat A, const char *type)
	Configure the permutated preconditioner. More...
PetscErrorCode	PCPermApply (PC pc, Vec x, Vec y)
	Apply the permutated preconditioner. More...
PetscErrorCode	PCPermDestroy (PC pc)
	Destroy a permutated preconditioner. More...

Detailed Description

Permutation for PETSc preconditioners.

Date

Jan 15 2010

Author

Runar Holdahl / SINTEF

Function Documentation

PCPermApply()

PetscErrorCode PCPermApply	(	PC	pc,
		Vec	x,
		Vec	y
	)

Apply the permutated preconditioner.

Parameters

	pc	Preconditioner to apply
[in]	x	Vector to apply preconditioner to
[out]	y	The evaluate preconditioner value

References PCPerm::identity, PCPerm::order, and PCPerm::pc.

Referenced by PETScSolParams::addDirSmoother().

PCPermCreate()

PetscErrorCode PCPermCreate

(

PCPerm **

pc

)

Create the permutated preconditioner.

Parameters

[out]

pc

Pointer to the preconditioner to create.

References PCPerm::order.

Referenced by PETScSolParams::addDirSmoother().

PCPermDestroy()

PetscErrorCode PCPermDestroy

(

PC

pc

)

Destroy a permutated preconditioner.

Parameters

pc	Preconditioner to destroy

References PCPerm::pc, and PetscCall.

Referenced by PETScSolParams::addDirSmoother().

PCPermSetUp()

PetscErrorCode PCPermSetUp	(	PC	pc,
		IS *	perm,
		Mat	A,
		const char *	type
	)

Configure the permutated preconditioner.

Parameters

[out]	pc	Preconditioner to create
	perm	The index set describing the ordering
	A	The matrix to permutate
	type	type for preconditioner to create

References PCPerm::Aperm, PCPerm::identity, PCPerm::order, and PCPerm::pc.

Referenced by PETScSolParams::addDirSmoother().