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

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Index of all SNESFAS routines
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Index of all manual pages