petsc-master 2019-06-19
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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_plex_hash_location - Use grid hashing for point location
-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 - Maxmimum mesh point height used to project locally
-dm_plex_regular_refinement - Use special nested projection algorithm for regular refinement
-dm_plex_check_symmetry - Check that the adjacency information in the mesh is symmetric
-dm_plex_check_skeleton <celltype> - Check that each cell has the correct number of vertices
-dm_plex_check_faces <celltype> - 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 <num> - Scale the TikZ
-dm_plex_print_fem <num> - View FEM assembly information, such as element vectors and matrices

See Also

DMType, DMPlexCreate(), DMCreate(), DMSetType()

Level

intermediate

Location

src/dm/impls/plex/plexcreate.c

Examples

src/dm/impls/plex/examples/tutorials/ex2.c.html
src/dm/impls/plex/examples/tutorials/ex5.c.html
src/dm/impls/forest/examples/tutorials/ex1.c.html
src/dm/field/examples/tutorials/ex1.c.html
src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex56.c.html
src/snes/examples/tutorials/ex62.c.html
src/snes/examples/tutorials/ex77.c.html
src/ts/examples/tutorials/ex11.c.html
src/ts/examples/tutorials/ex48.c.html

Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages