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<p><font face="serif">Guys -- it took a lot of work this weekend,
and I am still waiting on IT to complete their configuration
changes, but the newest version of MPI is compiled and working
on the cluster in Godsey.</font></p>
<p><font face="serif">There is some bad news though -- <br>
</font></p>
<p><font face="serif">1. You will need make changes to your .bashrc
file to point to the location of the newly compiled MPI stuff</font></p>
<p><font face="serif"> In a former exercise I had you add the
following to your .bashrc</font></p>
<pre><font face="serif"> <font face="monospace">export PATH="${PATH}:/usr/lib64/openmpi/bin:."</font></font></pre>
<pre> export LD_LIBRARY_PATH="/usr/local/lib:/usr/local/lib64:/usr/lib64/openmpi/lib”</pre>
<p><font face="serif"> Delete those lines and replace with</font></p>
<font face="serif"> <font face="monospace">export
MPI_PATH="/usr2/MPI"</font></font><br>
<font face="serif"><font face="monospace"> export
PATH="${PATH}:${MPI_PATH}/bin:."</font></font><br>
<font face="monospace"> export LD_LIBRARY_PATH="/usr/local/lib:/usr/local/lib64</font><font
face="serif"><font face="monospace">:${MPI_PATH}/lib"</font><br>
</font>
<p><font face="serif">2. You will have to REBUILD all of your ssh
keys to match the new hostnames. Here are the <a
moz-do-not-send="true"
href="https://docs.google.com/document/d/1FNjbIc6t8-2Z-GnJsWIzn4LU0N0SBil3vtviLbxiyRU/edit?usp=sharing">instructions</a>
on how to do that. <br>
</font></p>
<p><br>
</p>
<p>3. Once you have done this, log out and log back in -- make sure
that you can log into henry without a password. On henry you can
check the ability to log into all of the systems without a
password by runing my script</p>
<p> /tmp/checkup.pl</p>
<p><br>
</p>
<p>I have an off-campus meeting at 11:45, so I will be leaving class
early on Monday. I need you to come to the classroom and try and
get all this done so we can move on with the MPI assignments on
Wednesday. The good news is that we can now use THE UPDATED
COMPILER suite for any MPI/PTHREAD/OpenMP programming. Hopefully
I can also get this to work with CUDA! <br>
</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-signature">-- <br>
<b><i>Andrew J. Pounds, Ph.D.</i></b><br>
<i>Professor of Chemistry and Computer Science</i><br>
<i>Director of the Computational Science Program</i><br>
<i>Mercer University, Macon, GA 31207 (478) 301-5627</i></div>
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