10 ParFUM

ParFUM is the name for the latest version of FEM. ParFUM includes additional features including parallel mesh modification and adaptivity (geometrical). ParFUM also contains functions which generate additional topological adjacency information. ParFUM cannot be built separate from CHARM++ since it uses various messaging mechanisms that MPI does not readily support. It is important to note that ParFUM adaptivity at the moment has some limitations. It works only for meshes which are two-dimensional. The other limitation is that the mesh on which it works on must have one layer of node-deep ghosts. Most applications reqire no or one layer ghosts, so it is really not a limitation, but for applications that need multiple layers of ghost information, the adaptivity operations cannot be used.