petsc-dev 2014-04-19
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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