DMPLEX#
“plex” - A DM object that encapsulates an unstructured mesh, or CW Complex, which can be expressed using a Hasse Diagram. In the local representation, Vecs contain all unknowns in the interior and shared boundary. This is specified by a PetscSection object. Ownership in the global representation is determined by ownership of the underlying DMPLEX points. This is specified by another PetscSection object.
Options Database Keys#
-dm_refine_pre - Refine mesh before distribution
-dm_refine_uniform_pre - Choose uniform or generator-based refinement
-dm_refine_volume_limit_pre - Cell volume limit after pre-refinement using generator
-dm_distribute - Distribute mesh across processes
-dm_distribute_overlap - Number of cells to overlap for distribution
-dm_refine - Refine mesh after distribution
-dm_plex_hash_location - Use grid hashing for point location
-dm_plex_hash_box_faces <n,m,p> - The number of divisions in each direction of the grid hash
-dm_plex_partition_balance - Attempt to evenly divide points on partition boundary between processes
-dm_plex_remesh_bd - Allow changes to the boundary on remeshing
-dm_plex_max_projection_height - Maximum mesh point height used to project locally
-dm_plex_regular_refinement - Use special nested projection algorithm for regular refinement
-dm_plex_reorder_section - Use specialized blocking if available
-dm_plex_check_all - Perform all checks below
-dm_plex_check_symmetry - Check that the adjacency information in the mesh is symmetric
-dm_plex_check_skeleton
- Check that each cell has the correct number of vertices-dm_plex_check_faces
- Check that the faces of each cell give a vertex order this is consistent with what we expect from the cell type-dm_plex_check_geometry - Check that cells have positive volume
-dm_view :mesh.tex:ascii_latex - View the mesh in LaTeX/TikZ
-dm_plex_view_scale
- Scale the TikZ-dm_plex_print_fem
- View FEM assembly information, such as element vectors and matrices-dm_plex_print_fvm
- View FVM assembly information, such as flux updates
See Also#
DMPlex: Unstructured Grids, DM, DMPLEX, DMType, DMPlexCreate(), DMCreate(), DMSetType(), PetscSection
Level#
intermediate
Location#
Examples#
src/dm/impls/plex/tutorials/ex14.c
src/dm/impls/plex/tutorials/ex10.c
src/dm/impls/plex/tutorials/ex7.c
src/dm/field/tutorials/ex1.c
src/dm/impls/forest/tutorials/ex1.c
src/dm/impls/plex/tutorials/ex6.c
src/dm/impls/plex/tutorials/ex9.c
src/dm/impls/plex/tutorials/ex1.c
src/dm/impls/plex/tutorials/ex1f90.F90
Index of all DMPlex routines
Table of Contents for all manual pages
Index of all manual pages