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<p class="MsoNormal">Thank you for taking the time to write that up, Benson, we’ll take a look.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">John McCulloch | PCPC Direct, Ltd. | desk 713-344-0923<o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Benson Muite <benson_muite@emailplus.org> <br>
<b>Sent:</b> Monday, January 20, 2020 10:02 PM<br>
<b>To:</b> Scott Atchley <e.scott.atchley@gmail.com>; John McCulloch <johnm@pcpcdirect.com><br>
<b>Cc:</b> beowulf@beowulf.org<br>
<b>Subject:</b> Re: [Beowulf] HPC demo<o:p></o:p></p>
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<p>a) For technically knowledgable audience, you could demonstrate some simple benchmarks codes.<o:p></o:p></p>
<p>b) For a more general audience, you might also look for some parallel open source applications that are specific to the domain of interest. For example for engineering, OpenFOAM (<a href="https://openfoam.com/">https://openfoam.com/</a>) has some demo setups
that can give good motivation. FENICS (<a href="https://fenicsproject.org/">https://fenicsproject.org/</a>) and DEAL.II (<a href="https://www.dealii.org/">https://www.dealii.org/</a>) also have some things. If Oil and Gas industry SpecFEM3D (<a href="https://geodynamics.org/cig/software/specfem3d/">https://geodynamics.org/cig/software/specfem3d/</a>).
If computational chemistry NWChem (<a href="http://www.nwchem-sw.org/index.php/Main_Page">http://www.nwchem-sw.org/index.php/Main_Page</a>) might be nice. There are of course many other codes as well. If the cluster is mostly used as a task farm to run many
single node jobs rather than for a large parallel application, some embarrassingly parallel task is fine (<a href="https://en.wikipedia.org/wiki/Embarrassingly_parallel">https://en.wikipedia.org/wiki/Embarrassingly_parallel</a>), ideally setup so that upper
management can execute it. One such application is Mitsuba (<a href="https://www.mitsuba-renderer.org/">https://www.mitsuba-renderer.org/</a>), some measurements for Mitsuba on a small 2 node setup can be found at
<a href="https://courses.cs.ut.ee/MTAT.08.037/2015_spring/uploads/Main/Martoja.pdf">
https://courses.cs.ut.ee/MTAT.08.037/2015_spring/uploads/Main/Martoja.pdf</a><o:p></o:p></p>
<p>Probably most useful is to find out users of the cluster and have one or two of them explain how you have/will help improve company profitability by making their workflow more effective.
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<p class="MsoNormal">On 1/14/20 10:54 PM, Scott Atchley wrote:<o:p></o:p></p>
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<p class="MsoNormal">Yes, we have built a few of them. We have one here, one at AMSE, and one that travels to schools in one of our traveling science trailers.<o:p></o:p></p>
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<p class="MsoNormal">On Tue, Jan 14, 2020 at 10:29 AM John McCulloch <<a href="mailto:johnm@pcpcdirect.com">johnm@pcpcdirect.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hey Scott, I think I saw an exhibit like what you’re describing at the AMSE when I was on a project in Oak Ridge. Was that it?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:black">John McCulloch | PCPC Direct, Ltd. | desk 713-344-0923</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> Scott Atchley <<a href="mailto:e.scott.atchley@gmail.com" target="_blank">e.scott.atchley@gmail.com</a>>
<br>
<b>Sent:</b> Tuesday, January 14, 2020 7:19 AM<br>
<b>To:</b> John McCulloch <<a href="mailto:johnm@pcpcdirect.com" target="_blank">johnm@pcpcdirect.com</a>><br>
<b>Cc:</b> <a href="mailto:beowulf@beowulf.org" target="_blank">beowulf@beowulf.org</a><br>
<b>Subject:</b> Re: [Beowulf] HPC demo<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">We still have
<a href="https://tinytitan.github.io" target="_blank">Tiny Titan</a> even though Titan is gone. It allows users to toggle processors on and off and the display has a mode where the "water" is colored coded by the processor, which has a corresponding light.
You can see the frame rate go up as you add processors and the motion becomes much more fluid.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Mon, Jan 13, 2020 at 7:35 PM John McCulloch <<a href="mailto:johnm@pcpcdirect.com" target="_blank">johnm@pcpcdirect.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I recently inherited management of a cluster and my knowledge is limited to a bit of Red Hat. I need to figure out a demo for upper management graphically demonstrating the speed
up of running a parallel app on one x86 node versus multiple nodes up to 36. They have dual Gold 6132 procs and Mellanox EDR interconnect. Any suggestions would be appreciated.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Respectfully,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:black">John McCulloch | PCPC Direct, Ltd.</span><o:p></o:p></p>
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