petsc-3.9.4 2018-09-11
SNESFASSetLevels
Sets the number of levels to use with FAS. Must be called before any other FAS routine.
Synopsis
#include "petscsnes.h"
PetscErrorCode SNESFASSetLevels(SNES snes, PetscInt levels, MPI_Comm * comms)
Input Parameters
| snes | - the snes context
|
| levels | - the number of levels
|
| comms | - optional communicators for each level; this is to allow solving the coarser
problems on smaller sets of processors.
|
Notes
If the number of levels is one then the multigrid uses the -fas_levels prefix
for setting the level options rather than the -fas_coarse prefix.
Keywords
FAS, MG, set, levels, multigrid
See Also
SNESFASGetLevels()
Level
intermediate
Location
src/snes/impls/fas/fasfunc.c
Index of all SNESFAS routines
Table of Contents for all manual pages
Index of all manual pages