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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<TITLE>MATSOLVERMUMPS</TITLE>
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<A NAME="MATSOLVERMUMPS"><H1>MATSOLVERMUMPS</H1></A>
A matrix type providing direct solvers (LU and Cholesky) for distributed and sequential matrices via the external package MUMPS.  Works with <A HREF="../Mat/MATAIJ.html#MATAIJ">MATAIJ</A> and <A HREF="../Mat/MATSBAIJ.html#MATSBAIJ">MATSBAIJ</A> matrices
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_4 &lt;0,...,4&gt; </B></TD><TD>- print level
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_6 &lt;0,...,7&gt; </B></TD><TD>- matrix prescaling options (see MUMPS User's Guide)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_7 &lt;0,...,7&gt; </B></TD><TD>- matrix orderings (see MUMPS User's Guidec)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_9 &lt;1,2&gt; </B></TD><TD>- A or A^T x=b to be solved: 1 denotes A, 2 denotes A^T
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_10 &lt;n&gt; </B></TD><TD>- maximum number of iterative refinements
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_11 &lt;n&gt; </B></TD><TD>- error analysis, a positive value returns statistics during -ksp_view
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_12 &lt;n&gt; </B></TD><TD>- efficiency control (see MUMPS User's Guide)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_13 &lt;n&gt; </B></TD><TD>- efficiency control (see MUMPS User's Guide)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_14 &lt;n&gt; </B></TD><TD>- efficiency control (see MUMPS User's Guide)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_icntl_15 &lt;n&gt; </B></TD><TD>- efficiency control (see MUMPS User's Guide)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_cntl_1 &lt;delta&gt; </B></TD><TD>- relative pivoting threshold
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_cntl_2 &lt;tol&gt; </B></TD><TD>- stopping criterion for refinement
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_mumps_cntl_3 &lt;adelta&gt; </B></TD><TD>- absolute pivoting threshold
</TD></TR></TABLE>
<P>

<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
 <A HREF="../PC/PCFactorSetMatSolverPackage.html#PCFactorSetMatSolverPackage">PCFactorSetMatSolverPackage</A>(), <A HREF="../Mat/MatSolverPackage.html#MatSolverPackage">MatSolverPackage</A>
<BR>
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/impls/aij/mpi/mumps/mumps.c.html#MATSOLVERMUMPS">src/mat/impls/aij/mpi/mumps/mumps.c</A>
<BR><A HREF="./index.html">Index of all Mat 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/ex52.c.html">src/ksp/ksp/examples/tutorials/ex52.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex53.c.html">src/ksp/ksp/examples/tutorials/ex53.c.html</A><BR>
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