KSPGuessFischerSetModel#
Use the Paul Fischer algorithm or its variants to compute the initial guess
Synopsis#
#include "petscksp.h"
PetscErrorCode KSPGuessFischerSetModel(KSPGuess guess, PetscInt model, PetscInt size)
Logically Collective
Input Parameters#
guess - the initial guess context
model - use model 1, model 2, model 3, or any other number to turn it off
size - size of subspace used to generate initial guess
Options Database Key#
-ksp_guess_fischer_model <model,size> - uses the Fischer initial guess generator for repeated linear solves
See Also#
KSP: Linear System Solvers, KSPGuess, KSPGuessCreate(), KSPSetUseFischerGuess(), KSPSetGuess(), KSPGetGuess(), KSP
Level#
advanced
Location#
Implementations#
KSPGuessFischerSetModel_Fischer in src/ksp/ksp/guess/impls/fischer/fischer.c
Index of all KSP routines
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Index of all manual pages