PCMGGetSmootherDown#
Gets the KSP context to be used as smoother before coarse grid correction (pre-smoother).
Synopsis#
#include "petscksp.h"
PetscErrorCode PCMGGetSmootherDown(PC pc, PetscInt l, KSP *ksp)
Not Collective, ksp returned is parallel if pc is
Input Parameters#
pc - the multigrid context
l - the level (0 is coarsest) to supply
Output Parameter#
ksp - the smoother
Note#
Calling this will result in a different pre and post smoother so you may need to set options on the post smoother also
See Also#
KSP: Linear System Solvers, PCMG, PCMGGetSmootherUp(), PCMGGetSmoother()
Level#
advanced
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages