petsc-3.5.2 2014-09-08
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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