petsc-3.10.5 2019-03-28
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 <N> -
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