petsc-3.7.1 2016-05-15
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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 Many br

Input Parameters

ksp - the Krylov space context Many br
emax, emin - the eigenvalue estimates Many br

Options Database

-ksp_chebyshev_eigenvalues emin,emax - Many brNote: Call KSPChebyshevEstEigSet() or use the option -ksp_chebyshev_esteig a,b,c,d to have the KSP Many brestimate the eigenvalues and use these estimated values automatically Many br

Many br

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