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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.14.5 v3.14.5 docs/manualpages/DMPLEX/DMPLEX.html "><small>Report Typos and Errors</small></a></div>
<A NAME="DMPLEX"><H1>DMPLEX</H1></A>
"plex" - A <A HREF="../DM/DM.html#DM">DM</A> object that encapsulates an unstructured mesh, or CW Complex, which can be expressed using a Hasse Diagram. In the local representation, <A HREF="../Vec/Vecs.html#Vecs">Vecs</A> contain all unknowns in the interior and shared boundary. This is specified by a <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> object. Ownership in the global representation is determined by ownership of the underlying DMPlex points. This is specified by another <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> object.
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_refine_pre </B></TD><TD>- 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
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_distribute </B></TD><TD>- Distribute mesh across processes
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_distribute_overlap </B></TD><TD>- Number of cells to overlap for distribution
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_refine </B></TD><TD>- Refine mesh after distribution
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_hash_location </B></TD><TD>- Use grid hashing for point location
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_partition_balance </B></TD><TD>- Attempt to evenly divide points on partition boundary between processes
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_remesh_bd </B></TD><TD>- Allow changes to the boundary on remeshing
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_max_projection_height </B></TD><TD>- Maxmimum mesh point height used to project locally
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_regular_refinement </B></TD><TD>- Use special nested projection algorithm for regular refinement
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_all </B></TD><TD>- Perform all shecks below
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_symmetry </B></TD><TD>- Check that the adjacency information in the mesh is symmetric
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_skeleton <celltype> </B></TD><TD>- Check that each cell has the correct number of vertices
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_faces <celltype> </B></TD><TD>- Check that the faces of each cell give a vertex order this is consistent with what we expect from the cell type
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_geometry </B></TD><TD>- Check that cells have positive volume
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_view :mesh.tex:ascii_latex </B></TD><TD>- View the mesh in LaTeX/TikZ
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_view_scale <num> </B></TD><TD>- Scale the TikZ
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_print_fem <num> </B></TD><TD>- View FEM assembly information, such as element vectors and matrices
</TD></TR></TABLE>
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMType.html#DMType">DMType</A>, <A HREF="../DMPLEX/DMPlexCreate.html#DMPlexCreate">DMPlexCreate</A>(), <A HREF="../DM/DMCreate.html#DMCreate">DMCreate</A>(), <A HREF="../DM/DMSetType.html#DMSetType">DMSetType</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/dm/impls/plex/plexcreate.c.html#DMPLEX">src/dm/impls/plex/plexcreate.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/dm/impls/plex/tutorials/ex2.c.html">src/dm/impls/plex/tutorials/ex2.c.html</A><BR>
<A HREF="../../../src/dm/impls/plex/tutorials/ex5.c.html">src/dm/impls/plex/tutorials/ex5.c.html</A><BR>
<A HREF="../../../src/dm/impls/plex/tutorials/ex6.c.html">src/dm/impls/plex/tutorials/ex6.c.html</A><BR>
<A HREF="../../../src/dm/impls/plex/tutorials/ex7.c.html">src/dm/impls/plex/tutorials/ex7.c.html</A><BR>
<A HREF="../../../src/dm/impls/plex/tutorials/ex9.c.html">src/dm/impls/plex/tutorials/ex9.c.html</A><BR>
<A HREF="../../../src/dm/impls/forest/tutorials/ex1.c.html">src/dm/impls/forest/tutorials/ex1.c.html</A><BR>
<A HREF="../../../src/dm/field/tutorials/ex1.c.html">src/dm/field/tutorials/ex1.c.html</A><BR>
<A HREF="../../../src/snes/tutorials/ex12.c.html">src/snes/tutorials/ex12.c.html</A><BR>
<A HREF="../../../src/snes/tutorials/ex17.c.html">src/snes/tutorials/ex17.c.html</A><BR>
<A HREF="../../../src/snes/tutorials/ex56.c.html">src/snes/tutorials/ex56.c.html</A><BR>
<A HREF="../../../src/snes/tutorials/ex62.c.html">src/snes/tutorials/ex62.c.html</A><BR>
<BR><A HREF="./index.html">Index of all DMPLEX routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
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