DMPlexCreateNeighborCSR#

Create a mesh graph (cell-cell adjacency) in parallel CSR format.

Synopsis#

#include "petscdmplex.h"   
PetscErrorCode DMPlexCreateNeighborCSR(DM dm, PetscInt cellHeight, PetscInt *numVertices, PetscInt **offsets, PetscInt **adjacency)

Collective on dm

Input Parameters#

dm - The DMPLEX
cellHeight - The height of mesh points to treat as cells (default should be 0)

Output Parameters#

numVertices - The number of local vertices in the graph, or cells in the mesh.
offsets - The offset to the adjacency list for each cell
adjacency - The adjacency list for all cells

Note#

This is suitable for input to a mesh partitioner like ParMetis.

See Also#

DMPlex: Unstructured Grids in PETSc, DM, DMPLEX, DMPlexCreate()

Level#

advanced

Location#

src/dm/impls/plex/plexpartition.c

Examples#

src/ts/tutorials/ex11_sa.c.html

Index of all DMPlex routines
Table of Contents for all manual pages
Index of all manual pages