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<p class="MsoNormal" style="vertical-align: top;"><span class="hps"><span style="font-family: Arial; color: black;" lang="EN">Dear Sir,</span></span></p>
<p class="MsoNormal" style="vertical-align: top;"><span class="hps"><span style="font-family: Arial; color: black;" lang="EN"> </span></span></p>
<p class="MsoNormal" style="vertical-align: top;"><span class="hps"><span style="font-family: Arial; color: black;" lang="EN">First</span></span><span style="font-family: Arial; color: black;" lang="EN"> <span class="hps">I wish</span> <span class="hps">everyone</span> <span class="hps">a</span>
<span class="hps">prosperous new year.</span> <span class="hps">I am</span> <span class="hps">setting up</span> <span class="hps">a</span> <span class="hps">Beowulf</span>
<span class="hps">cluster</span> <span class="hps">in</span> <span class="hps">virtual
machine</span> <span class="hps">(</span>VirtualBox) and I am <span class="hps">using</span>
<span class="hps">Fedora</span> <span class="hps">13</span>, as <span class="hps">part
of</span> <span class="hps">a</span> <span class="hps">final project for</span> my <span class="hps">university end course,</span> <span class="hps">using</span> <span class="hps">the</span> <span class="hps">passing libraries</span> <span class="hps">PVM</span>
<span class="hps">and</span> <span class="hps">MPICH2</span> <span class="hps">(</span>version
<span class="hps">MPICH2</span><span class="atn">-</span>1.3.1). <span class="hps">I
have followed</span> <span class="hps">all</span> <span class="hps">the steps</span>
<span class="hps">in</span> <span class="hps">your</span> <span class="hps">Installer</span>'s
Guide, and <span class="hps">almost</span> <span class="hps">everything</span> <span class="hps">seems to be</span> <span class="hps">working</span>. <span class="hps">I could</span>
<span class="hps">run</span> <span class="hps">the</span> <span class="hps">example but
just at</span> <span class="hps">the</span> <span class="hps">most</span> <span class="hps">master machine</span> <span class="hps">(front-</span>end).</span><span style="font-size: 10pt; font-family: Arial; color: rgb(136, 136, 136);" lang="EN-US"></span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US"> </span></p>
<p class="MsoNormal" style="vertical-align: top;"><span class="hps"><span style="font-family: Arial; color: black;" lang="EN">I have</span></span><span style="font-family: Arial; color: black;" lang="EN"> <span class="hps">some questions</span> <span class="hps">and</span> <span class="hps">would
like</span> <span class="hps">if</span> <span class="hps">possible</span> <span class="hps">that</span> <span class="hps">you</span> <span class="hps">give me some
explanations</span>.</span></p>
<p class="MsoNormal" style="vertical-align: top;"><span class="hps"><span style="font-family: Arial; color: black;" lang="EN"> </span></span></p>
<p class="MsoNormal" style="vertical-align: top;"><span class="hps"><span style="font-family: Arial; color: black;" lang="EN">My</span></span><span style="font-family: Arial; color: black;" lang="EN"> <span class="hps">final</span> <span class="hps">installation</span> <span class="hps">folder</span>
<span class="hps">is</span>: </span><span style="font-size: 10pt; font-family: "Courier New";" lang="EN-US">home/cluster/mpich2-install</span><span style="font-size: 10pt; font-family: Arial; color: rgb(136, 136, 136);" lang="EN-US"></span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US"> </span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US">The line:<span style=""> </span></span><span style="font-size: 10pt; line-height: 150%; font-family: "Courier New";" lang="EN-US">/home/cluster/mpich2-install
</span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US"> </span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US">At the line </span><span style="font-size: 10pt; line-height: 150%; font-family: "Courier New";" lang="EN-US">c, </span><span style="" lang="EN-US">what should I
have to do: execute the line or I have to increase the line in the file </span><span style="font-size: 10pt; line-height: 150%; font-family: "Courier New";" lang="EN-US">/.bash_profile</span><span style="" lang="EN-US"> or other file?</span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US"> </span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US">In the exemple </span><span style="font-size: 10pt; line-height: 150%; font-family: "Courier New";" lang="EN-US">mpiexec -f machinefile -n <number>
./examples/cpi</span><span style="font-family: "Courier New";" lang="EN-US"> I did not understand what means </span><span style="font-size: 10pt; line-height: 150%; font-family: "Courier New";" lang="EN-US">machinefile </span><span style="font-family: "Courier New";" lang="EN-US">I have to create some file informing the
hosts?</span><span style="" lang="EN-US"></span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US"> </span></p>
<p class="MsoNormal" style="vertical-align: top;"><span class="hps"><span style="font-family: Arial; color: black;" lang="EN">What is</span></span><span style="font-family: Arial; color: black;" lang="EN"> <span class="hps">the</span> <span class="hps">correct procedure for</span> <span class="hps">that the</span> <span class="hps">MPI</span> <span class="hps">works on</span>
<span class="hps">all</span> <span class="hps">machines in the cluster</span>?<br>
<span class="hps">In certain</span> <span class="hps">situations</span>, using the <span class="hps">command</span> <span class="hps"><b style=""><i style="">mpirun</i></b></span> I <span class="hps">get</span>
<span class="hps">the</span> <span class="hps">answer</span> <span class="hps">down.</span>
<span class="hps">What does</span> <span class="hps">it</span> <span class="hps">mean</span>?
<span class="hps">What</span> <span class="hps">should I</span> <span class="hps">do</span>
<span class="hps">about it</span>?</span><span style="font-size: 10pt; font-family: Arial; color: rgb(136, 136, 136);" lang="EN-US"></span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="font-size: 10pt; line-height: 150%; font-family: "Courier New";" lang="EN-US"> </span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="font-size: 10pt; line-height: 150%; font-family: "Courier New";" lang="EN-US">[proxy:0:0@mestre]
HYDU_create_process(/home/cluster/mpich2-1.3.1/src/pm/hydra/utils/launch/launch.c:69):
execvp error on file cpi (No such file or directory)</span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US"> </span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US">Best regards</span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US"> </span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style="" lang="EN-US">Roberto Neves Gonzaga, Rio de Janeiro, Brazil.</span></p>
<p class="MsoNormal" style="text-align: justify; line-height: 150%;"><span style=""> </span></p>