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

Input Parameters#

  • ksp - the Krylov space context

  • type - the type of refinement

  KSP_GMRES_CGS_REFINE_NEVER
  KSP_GMRES_CGS_REFINE_IFNEEDED
  KSP_GMRES_CGS_REFINE_ALWAYS

Options Database Key#

  • -ksp_gmres_cgs_refinement_type <refine_never,refine_ifneeded,refine_always> - refinement type

See Also#

KSP: Linear System Solvers, KSPGMRES, 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

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