petsc-3.7.3 2016-08-01
KSPChebyshevSetEigenvalues
Sets estimates for the extreme eigenvalues of the preconditioned problem.
Synopsis
#include "petscksp.h"
PetscErrorCode KSPChebyshevSetEigenvalues(KSP ksp,PetscReal emax,PetscReal emin)
Logically Collective on KSP
Input Parameters
| ksp | - the Krylov space context
|
| emax, emin | - the eigenvalue estimates
|
Options Database
-ksp_chebyshev_eigenvalues emin,emax -
Note: Call KSPChebyshevEstEigSet() or use the option -ksp_chebyshev_esteig a,b,c,d to have the KSP
estimate the eigenvalues and use these estimated values automatically
Keywords
KSP, Chebyshev, set, eigenvalues
Level:intermediate
Location:src/ksp/ksp/impls/cheby/cheby.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages