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" 
#include "petscmat.h" 
PetscErrorCode KSPGetComputeEigenvalues(KSP ksp, PetscBool *flg)

Not Collective

Input Parameter

• ksp - iterative solver obtained from KSPCreate()

Output Parameter

• 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, KSPSetComputeRitz()

Level

advanced

Location

src/ksp/ksp/interface/itfunc.c

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Index of all KSP routines
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Index of all manual pages