petsc-3.4.5 2014-06-29

KSPGMRESSetCGSRefinementType

Sets the type of iterative refinement to use in the classical Gram Schmidt orthogonalization.

Synopsis

#include "petscksp.h"  
PetscErrorCode  KSPGMRESSetCGSRefinementType(KSP ksp,KSPGMRESCGSRefinementType type)

Logically Collective on KSP

Input Parameters

	ksp	- the Krylov space context
	type	- the type of refinement

Options Database

-ksp_gmres_cgs_refinement_type <never,ifneeded,always> -

Keywords

KSP, GMRES, iterative refinement

See Also

KSPGMRESSetOrthogonalization(), KSPGMRESCGSRefinementType, KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESGetCGSRefinementType(),
KSPGMRESGetOrthogonalization()

Level:intermediate
Location:src/ksp/ksp/impls/gmres/gmres.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages