petsc-3.11.4 2019-09-28
KSPPIPEGCRGetMmax
get the maximum number of previous directions PIPEGCR will store
Synopsis
#include "petscksp.h"
PetscErrorCode KSPPIPEGCRGetMmax(KSP ksp,PetscInt *mmax)
Note: PIPEGCR stores mmax+1 directions at most (mmax previous ones, and one current one)
Not Collective
Input Parameter
ksp -the Krylov space context
Output Parameter
mmax -the maximum number of previous directons allowed for orthogonalization
Options Database
-ksp_pipegcr_mmax <N> -
Keywords
KSP, PIPEGCR, truncation
See Also
KSPPIPEGCR, KSPPIPEGCRGetTruncationType(), KSPPIPEGCRGetNprealloc(), KSPPIPEGCRSetMmax()
Level
intermediate
Location
src/ksp/ksp/impls/gcr/pipegcr/pipegcr.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages