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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.7.5 v3.7.5 docs/manualpages/KSP/KSPPREONLY.html "><small>Report Typos and Errors</small></a></div>
<A NAME="KSPPREONLY"><H1>KSPPREONLY</H1></A>
This implements a stub method that applies ONLY the preconditioner. This may be used in inner iterations, where it is desired to allow multiple iterations as well as the "0-iteration" case. It is commonly used with the direct solver preconditioners like <A HREF="../PC/PCLU.html#PCLU">PCLU</A> and <A HREF="../PC/PCCHOLESKY.html#PCCHOLESKY">PCCHOLESKY</A>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<DT><B>-ksp_type preonly</B> -
<br>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/KSPCreate.html#KSPCreate">KSPCreate</A>(), <A HREF="../KSP/KSPSetType.html#KSPSetType">KSPSetType</A>(), <A HREF="../KSP/KSPType.html#KSPType">KSPType</A> (for list of available types), <A HREF="../KSP/KSP.html#KSP">KSP</A>
<BR>
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/ksp/impls/preonly/preonly.c.html#KSPPREONLY">src/ksp/ksp/impls/preonly/preonly.c</A>
<BR><A HREF="./index.html">Index of all KSP 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/ex30.c.html">src/ksp/ksp/examples/tutorials/ex30.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex52.c.html">src/ksp/ksp/examples/tutorials/ex52.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex52f.F.html">src/ksp/ksp/examples/tutorials/ex52f.F.html</A><BR>
<A HREF="../../../src/tao/constrained/examples/tutorials/maros.c.html">src/tao/constrained/examples/tutorials/maros.c.html</A><BR>
<A HREF="../../../src/tao/constrained/examples/tutorials/toy.c.html">src/tao/constrained/examples/tutorials/toy.c.html</A><BR>
<A HREF="../../../src/tao/constrained/examples/tutorials/toyf.F.html">src/tao/constrained/examples/tutorials/toyf.F.html</A><BR>
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