petsc-3.11.4 2019-09-28
DMDAGetPreallocationCenterDimension
Return the topology used to determine adjacency
Synopsis
#include "petscdmda.h"
PetscErrorCode DMDAGetPreallocationCenterDimension(DM dm, PetscInt *preallocCenterDim)
Input Parameter
dm -The DM 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
DMCreateMatrix(), DMDAPreallocateOperator(), DMDASetPreallocationCenterDimension()
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