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<h1> Docs: Changes: 2.1.5</h1>
<p align="center"><font color="#FF0000" size="5"><a
name="CHANGES">CHANGES</a> in PETSc 2.1.5 </font></p>
<p><font size="4"><strong><u>General:</u></strong></font>
<ul>
<li>Replace autoconf-configure with python-configure. Tested on Linux,
IRIX, Alpha-OSF, Mac OSX</li>
<li>Added PETSc interface to UMFPACK (Seq)</li>
<li>SuperLU & SuperLU_DIST insterface is updated to the latest download
versions. Complex version of these packages are now supported.</li>
<li>Added Support for QR factorization into PETSc/SPOOLES interface (Seq)</li>
<li>Added Support for installing PETSc with TAU instrumentation package.
Please check config files in bmake/linux_tau.</li>
<li>Added support for Cray SX-6 vector machine</li>
</ul>
<p><u><b>Vec:</b></u><ul>
<li>Added VecMaxPointwiseDivide()</li>
</ul>
<p><u><b>Mat:</b></u><ul>
<li>Added MatTranspose() for SBAIJ</li>
<li>Added MatConvert_SeqAIJ_SeqSBAIJ()</li>
<li>Added MatGetInertia()</li>
<li>Added MatAXPY() to SBAIJ and BAIJ mat formats</li>
<li>Added MatSetValuesBlocked() for SEQSBAIJ and MPISBAIJ formats</li>
<li>Improved single precision SSE factorization routines</li>
<li>Added scalable parallel binary viewer for MPIAIJ matrix</li>
</ul>
<p><u><b>SLES:</b></u><ul>
<li>Added ICC preconditioner support for MATSEQAIJ</li>
<li>PCSetUp() now defaults to ICC for SBAIJ</li>
<li>BoomerAMG preconditioner now defaults to zero initial guess</li>
<li>Added GetTotalBlocks() and GetLocalBlocks() to PCBJacobi</li>
<li>Improved LU and ILU damping for AIJ matrix type<br>
- New factorization damping policy (check manual)</li>
</ul>
<p><u><b>SNES:</b></u><br>
<br>
<u><b>TS:</b></u><ul>
<li>Added TSGetDuration()</li>
</ul>
<p><u><b>Other:</b></u><ul>
<li>Turned off logging of objects and actions by default - saves
memory usage</li>
<li>Reduce memory usage for DA and SDA objects</li>
<li>Support generation of SBAIJ matrices from DA</li>
</ul>
<p><u><b>Fortran:</b></u><ul>
<li>Added f90 support for intel compilers on linux and linux64<br>
</li>
</ul>
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