petsc-3.12.5 2020-03-29
KSPGetComputeEigenvalues
Gets the flag indicating that the extreme eigenvalues values will be calculated via a Lanczos or Arnoldi process as the linear system is solved.
Synopsis
#include "petscksp.h"
PetscErrorCode KSPGetComputeEigenvalues(KSP ksp,PetscBool *flg)
Not Collective
Input Parameter
ksp -iterative context obtained from KSPCreate()
Output Parameter
flg -PETSC_TRUE or PETSC_FALSE
Notes
Currently this option is not valid for all iterative methods.
See Also
KSPComputeEigenvalues(), KSPComputeEigenvaluesExplicitly(), KSP
Level
advanced
Location
src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages