PetscErrorCode KSPGMRESClassicalGramSchmidtOrthogonalization(KSP ksp,PetscInt it)Collective on KSP
| ksp | - KSP object, must be associated with GMRES, FGMRES, or LGMRES Krylov method | |
| its | - one less then the current GMRES restart iteration, i.e. the size of the Krylov space |
| -ksp_gmres_classicalgramschmidt | - Activates KSPGMRESClassicalGramSchmidtOrthogonalization() | |
| -ksp_gmres_cgs_refinement_type <refine_never,refine_ifneeded,refine_always> | - determine if iterative refinement is used to increase the stability of the classical Gram-Schmidt orthogonalization. |
Notes: Use KSPGMRESSetCGSRefinementType() to determine if iterative refinement is to be used