petsc-3.10.2 2018-10-09
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KSPSetComputeRitz

Sets a flag so that the Ritz or harmonic Ritz pairs will be calculated via a Lanczos or Arnoldi process as the linear system is solved.

Synopsis

#include "petscksp.h" 
PetscErrorCode  KSPSetComputeRitz(KSP ksp, PetscBool flg)
Logically Collective on KSP

Input Parameters

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

Notes

Currently this option is only valid for the GMRES method.

Keywords

set, compute, ritz

See Also

KSPComputeRitz(), 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