KSPFGMRESModifyPCNoChange#

this is the default used by fgmres - it doesn’t change the preconditioner.

Synopsis#

#include "petscksp.h" 
PetscErrorCode KSPFGMRESModifyPCNoChange(KSP ksp, PetscInt total_its, PetscInt loc_its, PetscReal res_norm, void *dummy)

Input Parameters#

  • ksp - the ksp context being used.

  • total_its - the total number of FGMRES iterations that have occurred.

  • loc_its - the number of FGMRES iterations since last restart. a restart (so number of Krylov directions to be computed)

  • res_norm - the current residual norm.

  • dummy - context variable, unused in this routine

Contributed by Allison Baker

You can use this as a template!

See Also#

KSPFGMRESSetModifyPC(), KSPFGMRESModifyPCKSP()

Level#

intermediate

Location#

src/ksp/ksp/impls/gmres/fgmres/modpcf.c


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