DMDASetPreallocationCenterDimension#

Determine the topology used to determine adjacency

Synopsis#

#include "petscdmda.h"   
PetscErrorCode DMDASetPreallocationCenterDimension(DM dm, PetscInt preallocCenterDim)

Input Parameters#

  • dm - The DMDA object

  • preallocCenterDim - The dimension of points which connect adjacent entries

Notes#

     FEM:   Two points p and q are adjacent if q \in closure(star(p)), preallocCenterDim = dim
     FVM:   Two points p and q are adjacent if q \in star(cone(p)),    preallocCenterDim = dim-1
     FVM++: Two points p and q are adjacent if q \in star(closure(p)), preallocCenterDim = 0

See Also#

DMDA - Creating vectors for structured grids, DM, DMDA, DMCreateMatrix(), DMDAPreallocateOperator()

Level#

developer

Location#

src/dm/impls/da/dapreallocate.c


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