<div>Dear friends of Mathematics and Computer Science Division Argonne National Laboratory</div><div><br></div><div>I am installing mpich2 for paralell procesing practice.</div><div><br></div><div>I took the following guide<a href="http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1.4.1-installguide.pdf"> http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1.4.1-installguide.pdf</a></div>
<div><br></div><div>In the page 5, you speak about of create a file named machinefile, wich content is the list of hosts in the cluster.</div><div>This file must be created in any particular path? What is the location?</div>
<div><br></div><div>I was installed mpich2 in tres hosts (one master and two workers), building the package file.</div><div><br></div><div>When i enter the instruction mpiexec -n 3 -f machinefile /usr/local/mpich2-1.4.1p1/examples/cpi</div>
<div><br></div><div>where:</div><div><br></div><div><ul><li>The machinefile file is located in /root/ in all hosts in the cluster.</li></ul></div><div><ul><li>-n 3 make reference to the number of hosts in the cluster. It's correct? or -n 3 make reference to the cores in each host?</li>
</ul></div><div><br></div><div>The output of mpiexec -n 3 -f machinefile /usr/local/mpich2-1.4.1p1/examples/cpi is :</div><div><br></div><div><img src="cid:ii_135c10390ece4539" alt="Inline image 2"><br></div><div><br></div>
<div>When i enter the instruction mpiexec -n 6 -f machinefile /usr/local/mpich2-1.4.1p1/examples/cpi , the output is:</div><div><br></div><div><img src="cid:ii_135c0ff2b0ff9711" alt="Inline image 1"><br><br></div><div>The system try setup connection through ssh with other hosts, but wait and fail.</div>
<div><br></div><div>I appreciate your valuable help and collaboration.</div><div>Best Regards</div><div><br></div><div><br></div><div>Bernardo Augusto García Loaiza<br>Ingeniero de Sistemas <br>Estudiante de Maestría en Ingeniería Informática - Universidad EAFIT<div>
<a href="http://about.me/bgarcial" target="_blank">http://about.me/bgarcial</a><br><div><br></div></div><br>
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