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   <div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="MATSOLVERKLU"><H1>MATSOLVERKLU</H1></A>
"klu" - A matrix type providing direct solvers (LU) for sequential matrices via the external package KLU. ./configure --download-suitesparse to install PETSc to use KLU
<P>
Use -pc_type lu -pc_factor_mat_solver_type klu to use this direct solver
<P>
Consult KLU documentation for more information on the options database keys below.
<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_klu_pivot_tol &lt;0.001&gt;                  </B></TD><TD>- Partial pivoting tolerance
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_klu_use_btf &lt;1&gt;                        </B></TD><TD>- Use BTF preordering
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_klu_ordering &lt;AMD&gt;                     </B></TD><TD>- KLU reordering scheme to reduce fill-in (choose one of) AMD COLAMD PETSC
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_klu_row_scale &lt;NONE&gt;                   </B></TD><TD>- Matrix row scaling (choose one of) NONE SUM MAX 
</TD></TR></TABLE>
<P>
Note: KLU is part of SuiteSparse <a href="http://faculty.cse.tamu.edu/davis/suitesparse.html">http://faculty.cse.tamu.edu/davis/suitesparse.html </a> <P>

<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
 <A HREF="../PC/PCLU.html#PCLU">PCLU</A>, <A HREF="../Mat/MATSOLVERUMFPACK.html#MATSOLVERUMFPACK">MATSOLVERUMFPACK</A>, <A HREF="../Mat/MATSOLVERCHOLMOD.html#MATSOLVERCHOLMOD">MATSOLVERCHOLMOD</A>, <A HREF="../PC/PCFactorSetMatSolverType.html#PCFactorSetMatSolverType">PCFactorSetMatSolverType</A>(), <A HREF="../Mat/MatSolverType.html#MatSolverType">MatSolverType</A>
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>beginner<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/impls/aij/seq/klu/klu.c.html#MATSOLVERKLU">src/mat/impls/aij/seq/klu/klu.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>
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