petsc-3.14.6 2021-03-30
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KSPChebyshevEstEigSetUseNoisy
use a noisy right hand side in order to do the estimate instead of the given right hand side
Synopsis
#include "petscksp.h"
PetscErrorCode
KSPChebyshevEstEigSetUseNoisy
(
KSP
ksp,
PetscBool
use)
Logically Collective
Input Arguments
ksp
- linear solver context
use
-
PETSC_TRUE
to use noisy
Options Database
-ksp_chebyshev_esteig_noisy <true,false>
Notes
This alledgely works better for multigrid smoothers
See Also
KSPChebyshevEstEigSet
()
Level
intermediate
Location
src/ksp/ksp/impls/cheby/cheby.c
Implementations
KSPChebyshevEstEigSetUseNoisy_Chebyshev in src/ksp/ksp/impls/cheby/cheby.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages