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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<HEAD> <link rel="canonical" href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMSetFromOptions.html" />
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<TITLE>DMSetFromOptions</TITLE>
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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/DM/DMSetFromOptions.html "><small>Report Typos and Errors</small></a></div>
<A NAME="DMSetFromOptions"><H1>DMSetFromOptions</H1></A>
sets parameters in a <A HREF="../DM/DM.html#DM">DM</A> from the options database
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../DM/DMSetFromOptions.html#DMSetFromOptions">DMSetFromOptions</A>(<A HREF="../DM/DM.html#DM">DM</A> dm)
</PRE>
Collective on dm
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>dm </B></TD><TD>- the <A HREF="../DM/DM.html#DM">DM</A> object to set options for
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_preallocate_only </B></TD><TD>- Only preallocate the matrix for <A HREF="../DM/DMCreateMatrix.html#DMCreateMatrix">DMCreateMatrix</A>(), but do not fill it with zeros
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_vec_type <type> </B></TD><TD>- type of vector to create inside <A HREF="../DM/DM.html#DM">DM</A>
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_mat_type <type> </B></TD><TD>- type of matrix to create inside <A HREF="../DM/DM.html#DM">DM</A>
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_is_coloring_type </B></TD><TD>- <global or local>
</TD></TR></TABLE>
<P>
<A HREF="../DMPLEX/DMPLEX.html#DMPLEX">DMPLEX</A> Specific Checks
<TABLE border="0" cellpadding="0" cellspacing="0">
<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 - <A HREF="../DMPLEX/DMPlexCheckSymmetry.html#DMPlexCheckSymmetry">DMPlexCheckSymmetry</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_skeleton </B></TD><TD>- Check that each cell has the correct number of vertices (only for homogeneous simplex or tensor meshes) - <A HREF="../DMPLEX/DMPlexCheckSkeleton.html#DMPlexCheckSkeleton">DMPlexCheckSkeleton</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_faces </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 - <A HREF="../DMPLEX/DMPlexCheckFaces.html#DMPlexCheckFaces">DMPlexCheckFaces</A>()
</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 - <A HREF="../DMPLEX/DMPlexCheckGeometry.html#DMPlexCheckGeometry">DMPlexCheckGeometry</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_pointsf </B></TD><TD>- Check some necessary conditions for PointSF - <A HREF="../DMPLEX/DMPlexCheckPointSF.html#DMPlexCheckPointSF">DMPlexCheckPointSF</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_interface_cones </B></TD><TD>- Check points on inter-partition interfaces have conforming order of cone points - <A HREF="../DMPLEX/DMPlexCheckInterfaceCones.html#DMPlexCheckInterfaceCones">DMPlexCheckInterfaceCones</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-dm_plex_check_all </B></TD><TD>- Perform all the checks above
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMView.html#DMView">DMView</A>(), <A HREF="../DM/DMCreateGlobalVector.html#DMCreateGlobalVector">DMCreateGlobalVector</A>(), <A HREF="../DM/DMCreateInterpolation.html#DMCreateInterpolation">DMCreateInterpolation</A>(), <A HREF="../DM/DMCreateColoring.html#DMCreateColoring">DMCreateColoring</A>(), <A HREF="../DM/DMCreateMatrix.html#DMCreateMatrix">DMCreateMatrix</A>(),
<BR><A HREF="../DMPLEX/DMPlexCheckSymmetry.html#DMPlexCheckSymmetry">DMPlexCheckSymmetry</A>(), <A HREF="../DMPLEX/DMPlexCheckSkeleton.html#DMPlexCheckSkeleton">DMPlexCheckSkeleton</A>(), <A HREF="../DMPLEX/DMPlexCheckFaces.html#DMPlexCheckFaces">DMPlexCheckFaces</A>(), <A HREF="../DMPLEX/DMPlexCheckGeometry.html#DMPlexCheckGeometry">DMPlexCheckGeometry</A>(), <A HREF="../DMPLEX/DMPlexCheckPointSF.html#DMPlexCheckPointSF">DMPlexCheckPointSF</A>(), <A HREF="../DMPLEX/DMPlexCheckInterfaceCones.html#DMPlexCheckInterfaceCones">DMPlexCheckInterfaceCones</A>()
<P>
<P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/dm/interface/dm.c.html#DMSetFromOptions">src/dm/interface/dm.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/ex8.c.html">src/dm/impls/plex/tutorials/ex8.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/impls/stag/tutorials/ex1.c.html">src/dm/impls/stag/tutorials/ex1.c.html</A><BR>
<A HREF="../../../src/dm/impls/stag/tutorials/ex2.c.html">src/dm/impls/stag/tutorials/ex2.c.html</A><BR>
<A HREF="../../../src/dm/impls/stag/tutorials/ex3.c.html">src/dm/impls/stag/tutorials/ex3.c.html</A><BR>
<A HREF="../../../src/dm/impls/stag/tutorials/ex4.c.html">src/dm/impls/stag/tutorials/ex4.c.html</A><BR>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/dm/impls/da/dacreate.c.html#DMSetFromOptions_DA">DMSetFromOptions_DA in src/dm/impls/da/dacreate.c</A><BR>
<A HREF="../../../src/dm/impls/forest/forest.c.html#DMSetFromOptions_Forest">DMSetFromOptions_Forest in src/dm/impls/forest/forest.c</A><BR>
<A HREF="../../../src/dm/impls/forest/p4est/pforest.c.html#DMSetFromOptions_pforest">DMSetFromOptions_pforest in src/dm/impls/forest/p4est/pforest.c</A><BR>
<A HREF="../../../src/dm/impls/moab/dmmoab.cxx.html#DMSetFromOptions_Moab">DMSetFromOptions_Moab in src/dm/impls/moab/dmmoab.cxx</A><BR>
<A HREF="../../../src/dm/impls/network/networkcreate.c.html#DMSetFromOptions_Network">DMSetFromOptions_Network in src/dm/impls/network/networkcreate.c</A><BR>
<A HREF="../../../src/dm/impls/patch/patchcreate.c.html#DMSetFromOptions_Patch">DMSetFromOptions_Patch in src/dm/impls/patch/patchcreate.c</A><BR>
<A HREF="../../../src/dm/impls/plex/plexcreate.c.html#DMSetFromOptions_NonRefinement_Plex">DMSetFromOptions_NonRefinement_Plex in src/dm/impls/plex/plexcreate.c</A><BR>
<A HREF="../../../src/dm/impls/plex/plexcreate.c.html#DMSetFromOptions_Plex">DMSetFromOptions_Plex in src/dm/impls/plex/plexcreate.c</A><BR>
<A HREF="../../../src/dm/impls/stag/stag.c.html#DMSetFromOptions_Stag">DMSetFromOptions_Stag in src/dm/impls/stag/stag.c</A><BR>
<BR><A HREF="./index.html">Index of all DM routines</A>
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