#include "petscksp.h" PetscErrorCode KSPSetNormType(KSP ksp,KSPNormType normtype)Logically Collective on KSP
ksp | - Krylov solver context | |
normtype | - one of |
KSP_NORM_NONE - skips computing the norm, this should only be used if you are using
the Krylov method as a smoother with a fixed small number of iterations.
Implicitly sets KSPConvergedSkip as KSP convergence test.
KSP_NORM_PRECONDITIONED - the default for left preconditioned solves, uses the l2 norm
of the preconditioned residual P^{-1}(b - A x)
KSP_NORM_UNPRECONDITIONED - uses the l2 norm of the true b - Ax residual.
KSP_NORM_NATURAL - supported by KSPCG, KSPCR, KSPCGNE, KSPCGS
Level:advanced
Location:src/ksp/ksp/interface/itcreate.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages