KSPFGMRESSetModifyPC

Sets the routine used by FGMRES to modify the preconditioner.

Synopsis

int KSPFGMRESSetModifyPC(KSP ksp,int (*fcn)(KSP,int,int,PetscReal,void*),void* ctx,int (*d)(void*))
Collective on KSP

Input Parameters

ksp - iterative context obtained from KSPCreate
fcn - modifypc function
ctx - optional contex
d - optional context destroy routine

Calling Sequence of function

ierr = int fcn(KSP ksp,int total_its,int 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_modifypcsles

Contributed by Allison Baker

Notes

Several modifypc routines are predefined, including KSPFGMRESModifyPCNoChange() KSPFGMRESModifyPCSLES()

See Also

KSPFGMRESModifyPCNoChange(), KSPFGMRESModifyPCSLES()

Level:intermediate
Location:
src/sles/ksp/impls/fgmres/modpcf.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages