petsc-3.11.4 2019-09-28
KSPPIPEFCGSetTruncationType
specify how many of its stored previous directions PIPEFCG uses during orthoganalization
Synopsis
#include "petscksp.h"
PetscErrorCode KSPPIPEFCGSetTruncationType(KSP ksp,KSPFCDTruncationType truncstrat)
Logically Collective on KSP
KSP_FCD_TRUNC_TYPE_STANDARD uses all (up to mmax) stored directions
KSP_FCD_TRUNC_TYPE_NOTAY uses max(1,mod(i,mmax)) stored directions at iteration i=0,1,..
Input Parameters
| ksp | - the Krylov space context
|
| truncstrat | - the choice of strategy
|
Options Database
-ksp_pipefcg_truncation_type <standard,notay> -which stored search directions to orthogonalize against
See Also
KSPPIPEFCG, KSPPIPEFCGGetTruncationType, KSPFCDTruncationType
Level
intermediate
Location
src/ksp/ksp/impls/fcg/pipefcg/pipefcg.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages