1*46696af2SBarry Smith# Data Management (DM) 2*46696af2SBarry Smith 3*46696af2SBarry Smith`DM` objects are used to manage communication between the algebraic structures in PETSc (`Vec` and `Mat`) and mesh data structures 4*46696af2SBarry Smithin PDE-based (or other) simulations. See, for structured grids `DMDA`, for staggered grids `DMSTAG`, and for unstructured grids `DMPLEX`. 5*46696af2SBarry SmithUsers guide chapter: [](part_dm). 6*46696af2SBarry Smith 7*46696af2SBarry Smith<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/tutorials/index.html">Examples</A><BR> 8*46696af2SBarry Smith 9