petsc-3.8.4 2018-03-24
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KSPSetUseFischerGuess

 Use the Paul Fischer algorithm

Synopsis

#include "petscksp.h" 
PetscErrorCode  KSPSetUseFischerGuess(KSP ksp,PetscInt model,PetscInt size)
Logically Collective on KSP

Input Parameters

ksp - the Krylov context
model - use model 1, model 2 or any other number to turn it off
size - size of subspace used to generate initial guess

Options Database

-ksp_fischer_guess <model,size> -uses the Fischer initial guess generator for repeated linear solves

Keywords

KSP, set, options, prefix, database

See Also

KSPSetOptionsPrefix(), KSPAppendOptionsPrefix(), KSPSetUseFischerGuess(), KSPSetGuess(), KSPGetGuess()

Level:advanced
Location:src/ksp/ksp/interface/itcl.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages