DMDA#
“da” - A DM object that is used to help solve PDEs on a structured grid (or mesh) in 1, 2, or 3 dimensions.
Notes#
In the global representation of the vectors each process stores a non-overlapping rectangular (or slab in 3d) portion of the grid points.
In the local representation these rectangular regions (slabs) are extended in all directions by a stencil width set with DMDASetStencilWidth().
The vectors can be thought of as either cell centered or vertex centered on the grid (or mesh). But some variables cannot be cell centered and others
vertex centered; see the documentation for DMSTAG, a similar DM implementation which supports more general staggered grids.
Periodic boundary conditions can be handled by using a DMBoundaryType of DM_BOUNDARY_PERIODIC provided with DMDASetBoundaryType().
Other DMBoundaryTypevalues allow for different handling of terms along the boundary of the grid (or mesh).
See Also#
DMDA - Creating vectors for structured grids, DMType, DMCOMPOSITE, DMSTAG, DMDACreate(), DMCreate(), DMSetType(), DMDASetStencilWidth(), DMDASetStencilType(),
DMDAStencilType
Level#
intermediate
Location#
Examples#
src/dm/tutorials/ex19.c
src/dm/tutorials/swarm_ex3.c
src/dm/tutorials/ex20.c
src/dm/tutorials/ex1.c
src/dm/tutorials/ex10.c
src/dm/tutorials/ex7.c
src/dm/tutorials/ex25.c
src/dm/tutorials/ex51.c
src/dm/tutorials/ex15.c
src/dm/tutorials/ex9.c
Index of all DMDA routines
Table of Contents for all manual pages
Index of all manual pages