petsc-3.11.4 2019-09-28
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KSPGMRESGetCGSRefinementType

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

Synopsis

#include "petscksp.h"  
PetscErrorCode  KSPGMRESGetCGSRefinementType(KSP ksp,KSPGMRESCGSRefinementType *type)
Not Collective

Input Parameter

ksp -the Krylov space context

Output Parameter

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(), KSPGMRESSetCGSRefinementType(),
KSPGMRESGetOrthogonalization()

Level

intermediate

Location

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

Implementations

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

Index of all KSP routines
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Index of all manual pages