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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="PCASMGetSubKSP"><H1>PCASMGetSubKSP</H1></A>
Gets the local <A HREF="../KSP/KSP.html#KSP">KSP</A> contexts for all blocks on this processor.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscpc.h"
PetscErrorCode PCASMGetSubKSP(PC pc,PetscInt *n_local,PetscInt *first_local,KSP *ksp[])
</PRE>
Collective on <A HREF="../PC/PC.html#PC">PC</A> iff first_local is requested
<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_local </B></TD><TD>- the number of blocks on this processor or NULL
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>first_local </B></TD><TD>- the global number of the first block on this processor or NULL,
all processors must request or all must pass NULL
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ksp </B></TD><TD>- the array of <A HREF="../KSP/KSP.html#KSP">KSP</A> contexts
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Note</FONT></H3>
After <A HREF="../PC/PCASMGetSubKSP.html#PCASMGetSubKSP">PCASMGetSubKSP</A>() the array of KSPes is not to be freed.
<P>
Currently for some matrix implementations only 1 block per processor
is supported.
<P>
You must call <A HREF="../KSP/KSPSetUp.html#KSPSetUp">KSPSetUp</A>() before calling <A HREF="../PC/PCASMGetSubKSP.html#PCASMGetSubKSP">PCASMGetSubKSP</A>().
<P>
<H3><FONT COLOR="#CC3333">Fortran note</FONT></H3>
The output argument 'ksp' must be an array of sufficient length or NULL_OBJECT. The latter can be used to learn the necessary length.
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../PC/PC.html#PC">PC</A>, ASM, additive Schwarz, get, sub, <A HREF="../KSP/KSP.html#KSP">KSP</A>, context
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCASMSetTotalSubdomains.html#PCASMSetTotalSubdomains">PCASMSetTotalSubdomains</A>(), <A HREF="../PC/PCASMSetTotalSubdomains.html#PCASMSetTotalSubdomains">PCASMSetTotalSubdomains</A>(), <A HREF="../PC/PCASMSetOverlap.html#PCASMSetOverlap">PCASMSetOverlap</A>(),
<BR><A HREF="../PC/PCASMCreateSubdomains2D.html#PCASMCreateSubdomains2D">PCASMCreateSubdomains2D</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/asm/asm.c.html#PCASMGetSubKSP">src/ksp/pc/impls/asm/asm.c</A>
<BR><A HREF="./index.html">Index of all PC routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex8.c.html">src/ksp/ksp/examples/tutorials/ex8.c.html</A><BR>
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