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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
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<A NAME="MatPartitioningApply"><H1>MatPartitioningApply</H1></A>
Gets a partitioning for a matrix.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../MatOrderings/MatPartitioningApply.html#MatPartitioningApply">MatPartitioningApply</A>(<A HREF="../Mat/MatPartitioning.html#MatPartitioning">MatPartitioning</A> matp,<A HREF="../IS/IS.html#IS">IS</A> *partitioning)
</PRE>
Collective on <A HREF="../Mat/Mat.html#Mat">Mat</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>matp </B></TD><TD>- the matrix partitioning object
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>partitioning </B></TD><TD>- the partitioning. For each local node this tells the processor
number that that node is assigned to.
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
To specify the partitioning through the options database, use one of
the following
<pre>
-mat_partitioning_type parmetis, -mat_partitioning current
</pre>
To see the partitioning result
<pre>
-mat_partitioning_view
</pre>
<P>
<P>
The user can define additional partitionings; see <A HREF="../MatOrderings/MatPartitioningRegister.html#MatPartitioningRegister">MatPartitioningRegister</A>().
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../MatOrderings/MatPartitioningRegister.html#MatPartitioningRegister">MatPartitioningRegister</A>(), <A HREF="../MatOrderings/MatPartitioningCreate.html#MatPartitioningCreate">MatPartitioningCreate</A>(),
<BR><A HREF="../MatOrderings/MatPartitioningDestroy.html#MatPartitioningDestroy">MatPartitioningDestroy</A>(), <A HREF="../MatOrderings/MatPartitioningSetAdjacency.html#MatPartitioningSetAdjacency">MatPartitioningSetAdjacency</A>(), <A HREF="../IS/ISPartitioningToNumbering.html#ISPartitioningToNumbering">ISPartitioningToNumbering</A>(),
<A HREF="../IS/ISPartitioningCount.html#ISPartitioningCount">ISPartitioningCount</A>()
<P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>beginner<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/partition/partition.c.html#MatPartitioningApply">src/mat/partition/partition.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/mat/tutorials/ex11.c.html">src/mat/tutorials/ex11.c.html</A><BR>
<A HREF="../../../src/mat/tutorials/ex15.c.html">src/mat/tutorials/ex15.c.html</A><BR>
<A HREF="../../../src/mat/tutorials/ex17.c.html">src/mat/tutorials/ex17.c.html</A><BR>
<A HREF="../../../src/mat/tutorials/ex15f.F90.html">src/mat/tutorials/ex15f.F90.html</A><BR>
<A HREF="../../../src/mat/tutorials/ex17f.F90.html">src/mat/tutorials/ex17f.F90.html</A><BR>
<A HREF="../../../src/ksp/ksp/tutorials/ex64.c.html">src/ksp/ksp/tutorials/ex64.c.html</A><BR>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/mat/partition/impls/chaco/chaco.c.html#MatPartitioningApply_Chaco">MatPartitioningApply_Chaco in src/mat/partition/impls/chaco/chaco.c</A><BR>
<A HREF="../../../src/mat/partition/impls/hierarchical/hierarchical.c.html#MatPartitioningApply_Hierarchical">MatPartitioningApply_Hierarchical in src/mat/partition/impls/hierarchical/hierarchical.c</A><BR>
<A HREF="../../../src/mat/partition/impls/party/party.c.html#MatPartitioningApply_Party">MatPartitioningApply_Party in src/mat/partition/impls/party/party.c</A><BR>
<A HREF="../../../src/mat/partition/impls/pmetis/pmetis.c.html#MatPartitioningApply_Parmetis">MatPartitioningApply_Parmetis in src/mat/partition/impls/pmetis/pmetis.c</A><BR>
<A HREF="../../../src/mat/partition/impls/scotch/scotch.c.html#MatPartitioningApply_PTScotch">MatPartitioningApply_PTScotch in src/mat/partition/impls/scotch/scotch.c</A><BR>
<BR><A HREF="./index.html">Index of all MatOrderings routines</A>
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