KSPFGMRESSetModifyPC#
Sets the routine used by FGMRES to modify the preconditioner.
Synopsis#
#include "petscksp.h"
PetscErrorCode KSPFGMRESSetModifyPC(KSP ksp, PetscErrorCode (*fcn)(KSP, PetscInt, PetscInt, PetscReal, void *), void *ctx, PetscErrorCode (*d)(void *))
Logically Collective on ksp
Input Parameters#
ksp - iterative context obtained from KSPCreate
fcn - modifypc function
ctx - optional context
d - optional context destroy routine
Calling Sequence of function#
PetscErrorCode fcn(KSP ksp,PetscInt total_its,PetscInt loc_its,PetscReal res_norm,void*ctx);
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. res_norm - the current residual norm. ctx - optional context variable
Options Database Keys#
-ksp_fgmres_modifypcnochange -ksp_fgmres_modifypcksp
Contributed by Allison Baker
Notes#
Several modifypc routines are predefined, including KSPFGMRESModifyPCNoChange() KSPFGMRESModifyPCKSP()
See Also#
Level#
intermediate
Location#
Implementations#
KSPFGMRESSetModifyPC_FGMRES in src/ksp/ksp/impls/gmres/fgmres/fgmres.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages