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

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Index of all DMDA routines
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Index of all manual pages