petsc-3.12.5 2020-03-29
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