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Thank you Thomas for your suggestion. I take note of all the people’s comment and hope to come with a good solution.
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<div style="orphans: auto; widows: auto;" class=""><b style="text-align: -webkit-auto;" class="">Eric F.  Alemany</b></div>
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<div class="">On May 10, 2018, at 10:32 AM, Thomas M. Payerle <<a href="mailto:payerle@umd.edu" class="">payerle@umd.edu</a>> wrote:</div>
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<div class="">Assuming you plan for users to use R in jobs, it will need to be accessible to the execute/compute nodes.<br class="">
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I would usually suggest on a shared drive.   Although it should be OK if locally installed on each compute
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node (probably want at same exact path and with same R packages installed).  Presumably you would<br class="">
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also want it available on the login nodes (users tend to like to see what software is installed, etc).  I do not believe<br class="">
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R is needed on the headnode (the one running the scheduler) unless that also serves as the login node.<br class="">
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The situation for python would be the same, except that I do not recall if the slurm daemons or utilities want<br class="">
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python (if so, you would need it on the head node, but would not need science related packages like numpy/scipy).<br class="">
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<div class="gmail_quote">On Thu, May 10, 2018 at 11:35 AM, Eric F. Alemany <span dir="ltr" class="">
<<a href="mailto:ealemany@stanford.edu" target="_blank" class="">ealemany@stanford.edu</a>></span> wrote:<br class="">
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<div class="">Hi All,</div>
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<div id="m_-768708383162705272AppleMailSignature" class="">I know this might sounds as a very basic question: where in the cluster should I install Python and R?</div>
<div id="m_-768708383162705272AppleMailSignature" class="">Headnode?</div>
<div id="m_-768708383162705272AppleMailSignature" class="">Execute nodes ?</div>
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<div id="m_-768708383162705272AppleMailSignature" class="">And is there a particular directory (path) I need to install Python and R.<br class="">
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Background:</div>
<div id="m_-768708383162705272AppleMailSignature" class="">SLURM on Ubuntu 18.04</div>
<div id="m_-768708383162705272AppleMailSignature" class="">1 headnode </div>
<div id="m_-768708383162705272AppleMailSignature" class="">4 execute nodes</div>
<div id="m_-768708383162705272AppleMailSignature" class="">NFS shared drive among all nodes.</div>
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<div id="m_-768708383162705272AppleMailSignature" class="">Thank you all for your help.</div>
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<div id="m_-768708383162705272AppleMailSignature" class="">Best,</div>
<div id="m_-768708383162705272AppleMailSignature" class="">Eric</div>
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<div class=""><b style="text-align:-webkit-auto" class="">Eric F.  Alemany</b></div>
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<div class=""><i style="text-align:-webkit-auto" class="">System Administrator for Research</i></div>
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<div class=""><span style="text-align:-webkit-auto;background-color:rgba(255,255,255,0)" class="">Division of Radiation & Cancer  Biology</span></div>
<div class=""><span style="text-align:-webkit-auto;background-color:rgba(255,255,255,0)" class="">Department of Radiation Oncology</span></div>
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<div class=""><span style="text-align:-webkit-auto;background-color:rgba(255,255,255,0)" class="">Stanford University School of Medicine</span></div>
<div class=""><span style="text-align:-webkit-auto;background-color:rgba(255,255,255,0)" class="">Stanford, California 94305</span></div>
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<div class=""><span style="background-color:rgba(255,255,255,0)" class=""><font style="text-align:-webkit-auto" class="">Tel:</font><a href="tel:1-650-498-7969" dir="ltr" target="_blank" class="">1-650-498-7969</a><font style="text-align:-webkit-auto" class=""> 
 No Texting</font></span></div>
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<div dir="ltr" class="">Tom Payerle <br class="">
DIT-ACIGS/Mid-Atlantic Crossroads        <a href="mailto:payerle@umd.edu" target="_blank" class="">
payerle@umd.edu</a><br class="">
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<div class="">5825 University Research Park               (301) 405-6135<br class="">
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<div dir="ltr" class="">University of Maryland<br class="">
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