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<A NAME="PCASMGetLocalSubmatrices"><H1>PCASMGetLocalSubmatrices</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 PCASMGetLocalSubmatrices(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>
<P>
Notes: Call after <A HREF="../PC/PCSetUp.html#PCSetUp">PCSetUp</A>() (or <A HREF="../KSP/KSPSetUp.html#KSPSetUp">KSPSetUp</A>()) but before <A HREF="../PC/PCApply.html#PCApply">PCApply</A>() (or KSPApply()) and before <A HREF="../PC/PCSetUpOnBlocks.html#PCSetUpOnBlocks">PCSetUpOnBlocks</A>())
<P>
Usually one would use PCSetModifySubmatrices() to change the submatrices in building the preconditioner.
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../PC/PC.html#PC">PC</A>, ASM, set, local, subdomains, additive Schwarz, block Jacobi
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCASMSetTotalSubdomains.html#PCASMSetTotalSubdomains">PCASMSetTotalSubdomains</A>(), <A HREF="../PC/PCASMSetOverlap.html#PCASMSetOverlap">PCASMSetOverlap</A>(), <A HREF="../PC/PCASMGetSubKSP.html#PCASMGetSubKSP">PCASMGetSubKSP</A>(),
<BR><A HREF="../PC/PCASMCreateSubdomains2D.html#PCASMCreateSubdomains2D">PCASMCreateSubdomains2D</A>(), <A HREF="../PC/PCASMSetLocalSubdomains.html#PCASMSetLocalSubdomains">PCASMSetLocalSubdomains</A>(), <A HREF="../PC/PCASMGetLocalSubdomains.html#PCASMGetLocalSubdomains">PCASMGetLocalSubdomains</A>(), PCSetModifySubmatrices()
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/pc/impls/asm/asm.c.html#PCASMGetLocalSubmatrices">src/ksp/pc/impls/asm/asm.c</A>
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