KSPSetComputeEigenvalues#

Sets a flag so that the extreme eigenvalues values will be calculated via a Lanczos or Arnoldi process as the linear system is solved.

Synopsis#

#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode KSPSetComputeEigenvalues(KSP ksp, PetscBool flg)

Logically Collective

Input Parameters#

ksp - iterative context obtained from KSPCreate()
flg - PETSC_TRUE or PETSC_FALSE

Note#

Currently this option is not valid for all iterative methods.

See Also#

KSP: Linear System Solvers, KSPComputeEigenvalues(), KSPComputeEigenvaluesExplicitly(), KSP

Level#

advanced

Location#

src/ksp/ksp/interface/itfunc.c

Examples#

src/ksp/ksp/tutorials/ex71.c

Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages