petsc-3.6.2 2015-10-02
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DMDASetPreallocationCenterDimension

Determine the topology used to determine adjacency

Synopsis

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

Input Parameters

 dm - The DM 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