petsc-3.9.2 2018-05-20
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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 <refine_never,refine_ifneeded,refine_always> -

Keywords

KSP, GMRES, iterative refinement

See Also

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

Level

intermediate

Location

src/ksp/ksp/impls/gmres/gmres.c

Implementations

KSPGMRESSetCGSRefinementType_GMRES in src/ksp/ksp/impls/gmres/gmres.c

Index of all KSP routines
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Index of all manual pages