KSPGuessSetFromOptions

Sets the options for a KSPGuess from the options database

Synopsis

#include "petscksp.h"  
PetscErrorCode KSPGuessSetFromOptions(KSPGuess guess)

Collective

Input Parameter

• guess - KSPGuess object

Options Database Keys

• -ksp_guess_type - Turns on generation of initial guesses and sets the method; use -help for a list of available methods

• -ksp_guess_view - view the KSPGuess object

• -ksp_guess_fischer_model <a,b> - set details for the Fischer models

• -ksp_guess_fischer_monitor - monitor the Fischer models

• -ksp_guess_fischer_tol - set the tolerance for the Fischer models

• -ksp_guess_pod_size - Number of snapshots

• -ksp_guess_pod_monitor true - monitor the pod initial guess processing

• -ksp_guess_pod_tol - Tolerance to retain eigenvectors

• -ksp_guess_pod_Ainner true - Use the operator as inner product (must be SPD)

See Also

KSP: Linear System Solvers, KSPGuess, KSPGetGuess(), KSPGuessSetType(), KSPGuessType

Level

developer

Location

src/ksp/ksp/interface/iguess.c

Implementations

KSPGuessSetFromOptions_Fischer() in src/ksp/ksp/guess/impls/fischer/fischer.c
KSPGuessSetFromOptions_POD() in src/ksp/ksp/guess/impls/pod/pod.c

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Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages