KSPGMRESSetCGSRefinementType

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

Synopsis

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

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()

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