petsc-3.13.6 2020-09-29
KSPFCGSetTruncationType
specify how many of its stored previous directions FCG uses during orthoganalization
Synopsis
#include "petscksp.h"
PetscErrorCode KSPFCGSetTruncationType(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 the last 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_fcg_truncation_type <standard, notay> -specify how many of its stored previous directions FCG uses during orthoganalization
.seealso: KSPFCDTruncationType, KSPFCGGetTruncationType
Level
intermediate
Location
src/ksp/ksp/impls/fcg/fcg.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages