KSPPIPEGCRSetMmax#
set the maximum number of previous directions PIPEGCR will store for orthogonalization
Synopsis#
#include "petscksp.h"
PetscErrorCode KSPPIPEGCRSetMmax(KSP ksp, PetscInt mmax)
Note: mmax + 1 directions are stored (mmax previous ones along with a current one) and whether all are used in each iteration also depends on the truncation strategy (see KSPPIPEGCRSetTruncationType)
Logically Collective on ksp
Input Parameters#
ksp - the Krylov space context
mmax - the maximum number of previous directions to orthogonalize againt
Options Database#
-ksp_pipegcr_mmax
- maximum number of previous directions
See Also#
KSPPIPEGCR
, KSPPIPEGCRSetTruncationType()
, KSPPIPEGCRSetNprealloc()
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