petsc-3.7.7 2017-09-25

DMPlexDistribute

Add partition overlap to a distributed non-overlapping DM.

Synopsis

#include "petscdmplex.h"   
#include "petscdmlabel.h"  
PetscErrorCode DMPlexDistributeOverlap(DM dm, PetscInt overlap, PetscSF *sf, DM *dmOverlap)

Not Collective

Input Parameter

	dm	- The non-overlapping distrbuted DMPlex object
	overlap	- The overlap of partitions, 0 is the default

Output Parameter

	sf	- The PetscSF used for point distribution
	dmOverlap	- The overlapping distributed DMPlex object, or NULL

Note: If the mesh was not distributed, the return value is NULL.

The user can control the definition of adjacency for the mesh using DMPlexGetAdjacencyUseCone() and DMPlexSetAdjacencyUseClosure(). They should choose the combination appropriate for the function representation on the mesh.

Keywords

mesh, elements

Examples