DMCoarsen#

Coarsens a DM object using a standard, non-adaptive coarsening of the underlying mesh

Synopsis#

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMCoarsen(DM dm, MPI_Comm comm, DM *dmc)

Collective on dm

Input Parameters#

  • dm - the DM object

  • comm - the communicator to contain the new DM object (or MPI_COMM_NULL)

Output Parameter#

  • dmc - the coarsened DM

See Also#

DM, DMRefine(), DMDestroy(), DMView(), DMCreateGlobalVector(), DMCreateInterpolation()

Level#

developer

Location#

src/dm/interface/dm.c

Examples#

src/dm/impls/stag/tutorials/ex4.c.html
src/ksp/ksp/tutorials/ex65.c.html

Implementations#

DMCoarsen_Composite in src/dm/impls/composite/pack.c
DMCoarsen_DA in src/dm/impls/da/da.c
DMCoarsen_Forest in src/dm/impls/forest/forest.c
DMCoarsen_Moab in src/dm/impls/moab/dmmbmg.cxx
DMCoarsen_Plex in src/dm/impls/plex/plexcoarsen.c
DMCoarsen_Redundant in src/dm/impls/redundant/dmredundant.c
DMCoarsen_Stag in src/dm/impls/stag/stag.c
DMCoarsen_SNESVI in src/snes/impls/vi/rs/virs.c


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