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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="PCCreate"><H1>PCCreate</H1></A>
Creates a preconditioner context.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
PetscErrorCode PCCreate(MPI_Comm comm,PC *newpc)
</PRE>
Collective on <A HREF="../Sys/MPI_Comm.html#MPI_Comm">MPI_Comm</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>comm </B> -MPI communicator
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>pc </B> -location to put the preconditioner context
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
The default preconditioner for sparse matrices is <A HREF="../PC/PCILU.html#PCILU">PCILU</A> or <A HREF="../PC/PCICC.html#PCICC">PCICC</A> with 0 fill on one process and block Jacobi with <A HREF="../PC/PCILU.html#PCILU">PCILU</A> or ICC
in parallel. For dense matrices it is always <A HREF="../PC/PCNONE.html#PCNONE">PCNONE</A>.
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../PC/PC.html#PC">PC</A>, create, context
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCSetUp.html#PCSetUp">PCSetUp</A>(), <A HREF="../PC/PCApply.html#PCApply">PCApply</A>(), <A HREF="../PC/PCDestroy.html#PCDestroy">PCDestroy</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>developer
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/pc/interface/precon.c.html#PCCreate">src/ksp/pc/interface/precon.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/ex21f.F.html">src/ksp/ksp/examples/tutorials/ex21f.F.html</A><BR>
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