KSPGetDiagonalScaleFix#
Determines if KSP
diagonally scales the system back after solving.
Synopsis#
#include "petscksp.h"
#include "petscmat.h"
PetscErrorCode KSPGetDiagonalScaleFix(KSP ksp, PetscBool *fix)
Not Collective
Input Parameter#
ksp - the
KSP
context
Output Parameter#
fix -
PETSC_TRUE
to scale back after the system solve,PETSC_FALSE
to not rescale (default)
Notes#
Must be called after KSPSetDiagonalScale()
If PETSC_TRUE
will slow things down, because it rescales the matrix before and
after each linear solve. This is intended mainly for testing to allow one
to easily get back the original system to make sure the solution computed is
accurate enough.
See Also#
KSPGetDiagonalScale()
, KSPSetDiagonalScale()
, KSPSetDiagonalScaleFix()
, KSP
Level#
intermediate
Location#
src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages