# Data Management (DM) `DM` objects are used to manage communication between the algebraic structures in PETSc (`Vec` and `Mat`) and mesh data structures in PDE-based (or other) simulations. See, for structured grids `DMDA`, for staggered grids `DMSTAG`, and for unstructured grids `DMPLEX`. Users guide chapter: [](part_dm). Examples

usfft/
hypre/
kokkos/
tests/
da1.c
da2.c
da3.c
da.c
dacorn.c
dacreate.c
dadd.c
dadestroy.c
dadist.c
dageometry.c
dagetarray.c
dagetelem.c
daghost.c
dagtol.c
dagtona.c
daindex.c
dainterp.c
dalocal.c
daltol.c
dapf.c
dapreallocate.c
dareg.c
dascatter.c
dasub.c
daview.c
fdda.c
gr1.c
gr2.c
grglvis.c
grvtk.c