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    <p>Ahh... the joys of starting up PVM! I use PVM via an external library, <a href="http://www.cs.umd.edu/projects/hpsl/chaos/ResearchAreas/ic/" rel="nofollow noreferrer">InterComm</a>. Getting PVM to start nicely on any platform is always a fun exercise. Here are some things you can try:</p> <p>If you can <code>rsh</code> to your compute nodes, set <code>$PVM_RSH=/path/to/rsh</code>. Otherwise, to configure via <code>ssh</code>:</p> <p>Setup <a href="http://rcsg.rice.edu/rcsg/shared/passwordless_ssh.html" rel="nofollow noreferrer">passwordless SSH</a> and manually verify that it works.</p> <p>Then, create <code>$PVM_ROOT/ssh</code>, containing something like:</p> <pre><code>#!/bin/sh host=$1 shift /usr/bin/ssh $host ". ~/.pvmprofile; $@" </code></pre> <p>Once that's taken care of: </p> <p>Set some environment variables (this is machine-dependent):</p> <pre><code>setenv PVM_ARCH LINUX64 setenv PVM_ROOT /users/ps14/opt-intel/pvm3 setenv PVM_BIN ${PVM_ROOT}/bin # Set the following accordingly: setenv PVM_RSH ${PVM_ROOT}/ssh #setenv PVM_RSH rsh </code></pre> <p>Now, create a ".pvmprofile" file containing these variables:</p> <pre><code>rm -f ~/.pvmprofile env | grep PVM_ &gt; ~/.pvmprofile </code></pre> <p>Create a hostfile containing unique hostnames:</p> <pre><code>sort -k 1,1 -u ${PBS_NODEFILE} &gt;! pvm_hostfile </code></pre> <p>Now, start PVM &amp; add nodes. I like to do this as a one-liner:</p> <pre><code>printf "%s\n%s\n" conf quit|${PVM_ROOT}/lib/pvm pvm_hostfile </code></pre>
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    1. COIf this doesn't work, edit `$PVM_ROOT/ssh` to use `/usr/bin/rsh`
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    2. COThank you very much, I solved the problem recently. I just forgot to post the answer back here for anyone in the future. Just some notes on the answer you provided, they didn't work because using ubuntu packages, it sent the files everywhere. Thus a localized file doesn't exist(for PVM_ROOT). However, one is needed to run programs in the HOME directory, and setting into the usual ARCH determined by `getpvmarch` (quite useful when I didn't know the arch). The actual problem was similar to the loopback problem. Just needed to hardcode the IP address and put it above the localhost in /etc/hosts
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    3. COhmmms, if that sounded too aggressive, sorry. Your answer was great and useful for anyone else in the future. <br> But if people install it via ubuntu it would be different. I'm wishing I didn't start off being lazy, however using apt-get is a lot easier when there are existing machines.
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