petsc-3.8.4 2018-03-24
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KSPGuessFischerSetModel

 Use the Paul Fischer algorithm

Synopsis

#include "petscksp.h" 
PetscErrorCode  KSPGuessFischerSetModel(KSPGuess guess,PetscInt model,PetscInt size)
Logically Collective on KSP

Input Parameters

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

Keywords

KSP, set, options, prefix, database

See Also

KSPGuess, KSPGuessCreate(), KSPSetUseFischerGuess(), KSPSetGuess(), KSPGetGuess()

Level:advanced
Location:src/ksp/ksp/guess/impls/fischer/fischer.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages