petsc-3.9.4 2018-09-11
PCMGSetDistinctSmoothUp
sets the up (post) smoother to be a seperate KSP from the down (pre) smoother on all levels and adds the suffix _up to the options name
Synopsis
#include "petscksp.h"
PetscErrorCode PCMGSetDistinctSmoothUp(PC pc)
Logically Collective on PC
Input Parameters
| pc | - the preconditioner context
|
Options Database Key
| -pc_mg_distinct_smoothup | -
|
Notes: this does not set a value on the coarsest grid, since we assume that
there is no separate smooth up on the coarsest grid.
Keywords
MG, smooth, up, post-smoothing, steps, multigrid
See Also
PCMGSetNumberSmooth()
Level
advanced
Location
src/ksp/pc/impls/mg/mg.c
Index of all PCMG routines
Table of Contents for all manual pages
Index of all manual pages