# DM Manual Pages
Examples
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 example, `DMDACreate()`.
tests/
dmmbfem.cxx
dmmbfield.cxx
dmmbio.cxx
dmmbmat.cxx
dmmbmg.cxx
dmmbutil.cxx
dmmbvec.cxx
dmmoab.cxx
makefile