DMDAGetNeighbors#

Gets an array containing the MPI rank of all the current processes neighbors.

Synopsis#

#include "petscdmda.h"   
PetscErrorCode DMDAGetNeighbors(DM da, const PetscMPIInt *ranks[])

Not Collective

Input Parameter#

  • da - the DMDA object

Output Parameter#

  • ranks - the neighbors ranks, stored with the x index increasing most rapidly. The process itself is in the list

Notes#

In 2d the array is of length 9, in 3d of length 27

Not supported in 1d

Do not free the array, it is freed when the DMDA is destroyed.

Fortran Note#

Pass in an array of the appropriate length to contain the values

See Also#

DMDA - Creating vectors for structured grids, DMDA, DM

Level#

intermediate

Location#

src/dm/impls/da/da.c


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