DMDAGetPreallocationCenterDimension#

Return the topology used to determine adjacency

Synopsis#

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

Input Parameter#

  • dm - The DMDA object

Output Parameter#

  • 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#

DM, DMDA, DMCreateMatrix(), DMDAPreallocateOperator(), DMDASetPreallocationCenterDimension()

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