PETSc version 3.16.6

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

Level

intermediate

Location

src/ksp/ksp/impls/cheby/cheby.c

Implementations

KSPChebyshevSetEigenvalues_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