<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>We've used both NAT and fully routable private networks up to 1000s of nodes. NAT was a little more secure fire or needs. </div><div><br>On Apr 14, 2017, at 2:41 PM, Richter, Brian J {BIS} <<a href="mailto:Brian.J.Richter@pepsico.com">Brian.J.Richter@pepsico.com</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks a lot, Ed. I will be going the NAT route!
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<p class="MsoNormal" style="margin-bottom:3.0pt;text-indent:-.9pt"><b><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#404040">Brian J. Richter<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-bottom:2.0pt;line-height:120%"><span style="font-size:9.0pt;line-height:120%;font-family:"Century Gothic",sans-serif;color:#696B73">Global R&D Senior Analyst
<b>•</b> Information Technology <o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt;line-height:120%"><span style="font-size:9.0pt;line-height:120%;font-family:"Century Gothic",sans-serif;color:#696B73">617 W Main St, Barrington, IL 60010<b><br>
</b>Office: 847-304-2356 <b>• </b>Mobile: 847-305-6306<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt;line-height:120%"><span style="font-size:9.0pt;line-height:120%;font-family:"Arial",sans-serif;color:#696B73"><a href="mailto:Brian.J.Richter@pepsico.com"><span style="color:blue">Brian.J.Richter@pepsico.com</span></a></span><b><u><span style="font-size:11.0pt;line-height:120%;font-family:"Arial",sans-serif;color:blue"><o:p></o:p></span></u></b></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Swindelles, Ed [<a href="mailto:ed.swindelles@uconn.edu">mailto:ed.swindelles@uconn.edu</a>]
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<b>Sent:</b> Friday, April 14, 2017 1:40 PM<br>
<b>To:</b> Richter, Brian J {BIS} <<a href="mailto:Brian.J.Richter@pepsico.com">Brian.J.Richter@pepsico.com</a>>; <a href="mailto:beowulf@beowulf.org">beowulf@beowulf.org</a><br>
<b>Subject:</b> Re: [Beowulf] HPC and Licensed Software<o:p></o:p></span></p>
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<p class="MsoNormal">Hi Brian - <o:p></o:p></p>
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<p class="MsoNormal">For a couple years we did NAT through our head node for checking out licenses (including StarCCM) and talking to Red Hat Satellite. We’re now transitioning to fully routed networks for our compute nodes, but NAT did the job well.<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">Ed Swindelles<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">Manager of Advanced Computing<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">University of Connecticut<o:p></o:p></span></p>
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<p class="MsoNormal">On Apr 14, 2017, at 2:34 PM, Richter, Brian J {BIS} <<a href="mailto:Brian.J.Richter@pepsico.com">Brian.J.Richter@pepsico.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#17365D">Hi All,<span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#17365D"> </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#17365D">We just built our first HPC and I have what seems like a rather dumb question regarding best practices and compute nodes. Our HPC setup is currently small, we
have a HeadNode which runs MOAB/Torque and we have 4 compute nodes connected with IB. The compute nodes are on their own private network. My question is, what is the best way to handle software that requires licenses to run on the compute nodes? For instance
we are trying to get STARCCM+ up and running on the cluster, the license server is on our general user network, the headnode is also on the user network, but when we submit a job to torque for STARCCM it keeps throwing errors that the software cannot connect
to the license server. Is it best practice to create a network path from the compute nodes out to the license server through the HeadNode? I feel like I’m missing something really simple here.</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#17365D">Thanks!<span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:3.0pt;text-indent:-.9pt"><b><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#404040">Brian J. Richter</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt;line-height:13.2pt"><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:#696B73">Global R&D Senior Analyst<span class="apple-converted-space"> </span><b>•</b><span class="apple-converted-space"> </span>Information
Technology<span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt;line-height:13.2pt"><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:#696B73">617 W Main St, Barrington, IL 60010<b><br>
</b>Office: 847-304-2356<span class="apple-converted-space"> </span><b>•<span class="apple-converted-space"> </span></b>Mobile: 847-305-6306</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt;line-height:13.2pt"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#696B73"><a href="mailto:Brian.J.Richter@pepsico.com"><span style="color:purple">Brian.J.Richter@pepsico.com</span></a></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> <o:p></o:p></span></p>
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