DMGetBlockSize#
Gets the inherent block size associated with a DM
Synopsis#
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
PetscErrorCode DMGetBlockSize(DM dm, PetscInt *bs)
Not Collective
Input Parameter#
dm - the
DMwith block structure
Output Parameter#
bs - the block size, 1 implies no exploitable block structure
Notes#
This might be the number of degrees of freedom at each grid point for a structured grid.
Complex DM that represent multiphysics or staggered grids or mixed-methods do not generally have a single inherent block size, but
rather different locations in the vectors may have a different block size.
See Also#
DM Basics, DM, ISCreateBlock(), VecSetBlockSize(), MatSetBlockSize(), DMGetLocalToGlobalMapping()
Level#
intermediate
Location#
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages