SNESFASSetLevels#

Sets the number of levels to use with SNESFAS. Must be called before any other SNESFAS routine.

Synopsis#

#include "petscsnes.h"  
PetscErrorCode SNESFASSetLevels(SNES snes, PetscInt levels, MPI_Comm *comms)

Input Parameters#

  • snes - the SNES context of SNESType SNESFAS

  • levels - the number of levels

  • comms - optional communicators for each level; this is to allow solving the coarser problems on smaller sets of processors.

Note#

If the number of levels is one then the solver uses the -fas_levels prefix for setting the level options rather than the -fas_coarse prefix.

See Also#

SNES: Nonlinear Solvers, SNES, SNESFAS, 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