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

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, DM, DMPLEX, DMPlexCreate()

Level

advanced

Location

src/dm/impls/plex/plexpartition.c

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Index of all DMPlex routines
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Index of all manual pages