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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="MatIncreaseOverlap"><H1>MatIncreaseOverlap</H1></A>
Given a set of submatrices indicated by index sets, replaces the index sets by larger ones that represent submatrices with additional overlap.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Mat/MatIncreaseOverlap.html#MatIncreaseOverlap">MatIncreaseOverlap</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> mat,<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> n,<A HREF="../IS/IS.html#IS">IS</A> is[],<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> ov)
</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>mat </B></TD><TD>- the matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>n </B></TD><TD>- the number of index sets
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>is </B></TD><TD>- the array of index sets (these index sets will changed during the call)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ov </B></TD><TD>- the additional overlap requested
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database</FONT></H3>
<DT><B>-mat_increase_overlap_scalable </B> -use a scalable algorithm to compute the overlap (supported by MPIAIJ matrix)
<br>
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatCreateSubMatrices.html#MatCreateSubMatrices">MatCreateSubMatrices</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/interface/matrix.c.html#MatIncreaseOverlap">src/mat/interface/matrix.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ">MatIncreaseOverlap_MPIAIJ in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ_Scalable">MatIncreaseOverlap_MPIAIJ_Scalable in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ_Once_Scalable">MatIncreaseOverlap_MPIAIJ_Once_Scalable in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ_Receive_Scalable">MatIncreaseOverlap_MPIAIJ_Receive_Scalable in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ_Send_Scalable">MatIncreaseOverlap_MPIAIJ_Send_Scalable in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ_Local_Scalable">MatIncreaseOverlap_MPIAIJ_Local_Scalable in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ_Once">MatIncreaseOverlap_MPIAIJ_Once in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ_Local">MatIncreaseOverlap_MPIAIJ_Local in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/mpi/mpiov.c.html#MatIncreaseOverlap_MPIAIJ_Receive">MatIncreaseOverlap_MPIAIJ_Receive in src/mat/impls/aij/mpi/mpiov.c</A><BR>
<A HREF="../../../src/mat/impls/aij/seq/aij.c.html#MatIncreaseOverlap_SeqAIJ">MatIncreaseOverlap_SeqAIJ in src/mat/impls/aij/seq/aij.c</A><BR>
<A HREF="../../../src/mat/impls/baij/mpi/baijov.c.html#MatIncreaseOverlap_MPIBAIJ">MatIncreaseOverlap_MPIBAIJ in src/mat/impls/baij/mpi/baijov.c</A><BR>
<A HREF="../../../src/mat/impls/baij/mpi/baijov.c.html#MatIncreaseOverlap_MPIBAIJ_Once">MatIncreaseOverlap_MPIBAIJ_Once in src/mat/impls/baij/mpi/baijov.c</A><BR>
<A HREF="../../../src/mat/impls/baij/mpi/baijov.c.html#MatIncreaseOverlap_MPIBAIJ_Local">MatIncreaseOverlap_MPIBAIJ_Local in src/mat/impls/baij/mpi/baijov.c</A><BR>
<A HREF="../../../src/mat/impls/baij/mpi/baijov.c.html#MatIncreaseOverlap_MPIBAIJ_Receive">MatIncreaseOverlap_MPIBAIJ_Receive in src/mat/impls/baij/mpi/baijov.c</A><BR>
<A HREF="../../../src/mat/impls/baij/seq/baij2.c.html#MatIncreaseOverlap_SeqBAIJ">MatIncreaseOverlap_SeqBAIJ in src/mat/impls/baij/seq/baij2.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/mpi/sbaijov.c.html#MatIncreaseOverlap_MPISBAIJ">MatIncreaseOverlap_MPISBAIJ in src/mat/impls/sbaij/mpi/sbaijov.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/mpi/sbaijov.c.html#MatIncreaseOverlap_MPISBAIJ_Once">MatIncreaseOverlap_MPISBAIJ_Once in src/mat/impls/sbaij/mpi/sbaijov.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/mpi/sbaijov.c.html#MatIncreaseOverlap_MPISBAIJ_Local">MatIncreaseOverlap_MPISBAIJ_Local in src/mat/impls/sbaij/mpi/sbaijov.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/seq/sbaij2.c.html#MatIncreaseOverlap_SeqSBAIJ">MatIncreaseOverlap_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaij2.c</A><BR>
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