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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="PCGASMGetSubmatrices"><H1>PCGASMGetSubmatrices</H1></A>
Gets the local submatrices (for this processor only) for the additive Schwarz preconditioner.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscpc.h"
PetscErrorCode PCGASMGetSubmatrices(PC pc,PetscInt *n,Mat *mat[])
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>pc </B> -the preconditioner context
<br>
<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>n </B></TD><TD>- the number of matrices for this processor (default value = 1)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mat </B></TD><TD>- the matrices
</TD></TR></TABLE>
<P>
Notes: matrices returned by this routine have the same communicators as the index sets (<A HREF="../IS/IS.html#IS">IS</A>)
used to define subdomains in <A HREF="../PC/PCGASMSetSubdomains.html#PCGASMSetSubdomains">PCGASMSetSubdomains</A>(), or <A HREF="../Sys/PETSC_COMM_SELF.html#PETSC_COMM_SELF">PETSC_COMM_SELF</A>, if the
subdomains were defined using <A HREF="../PC/PCGASMSetTotalSubdomains.html#PCGASMSetTotalSubdomains">PCGASMSetTotalSubdomains</A>().
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../PC/PC.html#PC">PC</A>, GASM, set, local, subdomains, additive Schwarz, block Jacobi
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
PCGASMSetTotalSubdomain(), <A HREF="../PC/PCGASMSetOverlap.html#PCGASMSetOverlap">PCGASMSetOverlap</A>(), <A HREF="../PC/PCGASMGetSubKSP.html#PCGASMGetSubKSP">PCGASMGetSubKSP</A>(),
<BR><A HREF="../PC/PCGASMCreateSubdomains2D.html#PCGASMCreateSubdomains2D">PCGASMCreateSubdomains2D</A>(), <A HREF="../PC/PCGASMSetSubdomains.html#PCGASMSetSubdomains">PCGASMSetSubdomains</A>(), <A HREF="../PC/PCGASMGetSubdomains.html#PCGASMGetSubdomains">PCGASMGetSubdomains</A>()
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/pc/impls/gasm/gasm.c.html#PCGASMGetSubmatrices">src/ksp/pc/impls/gasm/gasm.c</A>
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