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<p class="MsoNormal">Oh, but sorting through spaghetti of different colors that are unlabeled is part of the fun… Especially if you have your head in one side of the rack, and the indication that something is working or not is on the other side, and you’re
doing it yourself with no help. For a real thrill, if using RPis in a small box, you should have full 10 meter long cables all stuffed in there.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">"jaquilina@eagleeyet.net" <jaquilina@eagleeyet.net><br>
<b>Date: </b>Monday, February 10, 2020 at 5:57 AM<br>
<b>To: </b>Jim Lux <james.p.lux@jpl.nasa.gov>, "beowulf@beowulf.org" <beowulf@beowulf.org><br>
<b>Subject: </b>Re: [Beowulf] [EXTERNAL] Re: Have machine, will compute: ESXi or bare metal?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I might have a solution for those of you guys that would sort out the spaghetti of network cables. Let me know if you’re interested and I’ll send you guys the website
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Jonathan Aquilina<o:p></o:p></p>
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<p class="MsoNormal">Owner managing director<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Phone (356) 20330099<o:p></o:p></p>
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<p class="MsoNormal">Mobile (356) 79957942<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Email sales@eagleeyet.net<o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Beowulf <beowulf-bounces@beowulf.org> on behalf of Lux, Jim (US 337K) via Beowulf <beowulf@beowulf.org><br>
<b>Sent:</b> Monday, February 10, 2020 2:54:50 PM<br>
<b>To:</b> beowulf@beowulf.org <beowulf@beowulf.org><br>
<b>Subject:</b> Re: [Beowulf] [EXTERNAL] Re: Have machine, will compute: ESXi or bare metal?</span>
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<p class="xmsonormal">One comment on “building a cluster with VMs”<o:p></o:p></p>
<p class="xmsonormal"><br>
Part of bringing up a cluster is learning how to manage the interconnects, and loading software into the nodes, and then finding the tools to manage a bunch of different machines simultaneously, as well as issues around shared network drives, boot images, etc.<br>
<br>
I would think (but have not tried) that the multi-VM approach is a bit too unrealistically easy – I assume you can do MPI between VMs, so you could certainly practice with parallel coding. But it seems that spinning up identical instances, all that can see
the same host resources, on the same machine with the same display and keyboard kind of bypasses a lot of the hard stuff.<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal" style="margin-bottom:12.0pt">OTOH, If you want a cheap experience at getting the booting working, controlling multiple machines, learning pdsh, etc. you could just get 3 or 4 Rpis or beagles, and face all the problems of a real cluster
(including managing a rat’s nest of wires and cables)<br>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal"><b><span style="font-size:12.0pt;color:black">From: </span>
</b><span style="font-size:12.0pt;color:black">Beowulf <beowulf-bounces@beowulf.org> on behalf of "jaquilina@eagleeyet.net" <jaquilina@eagleeyet.net><br>
<b>Date: </b>Sunday, February 9, 2020 at 10:30 PM<br>
<b>To: </b>"Renfro, Michael" <Renfro@tntech.edu>, "beowulf@beowulf.org" <beowulf@beowulf.org><br>
<b>Subject: </b>[EXTERNAL] Re: [Beowulf] Have machine, will compute: ESXi or bare metal?</span><o:p></o:p></p>
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<p class="xmsonormal"><span lang="EN-GB">Hi Guys just piggy backing on this thread</span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB"> </span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB">I am considering upgrading my pc to 64gb of ram and setting it up as a win 10 based hyper-v host. Would you say this is a good way to learn how to put a cluster together with out the need to invest in a small number
of servers? My pc is a ryzen 5 3600 6 core 12 thread cpu motherboard is an msi b450 tomahawk max gaming motherboard currently 32gb ddr4 3200 upgradable to 64.</span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB"> </span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB">Let me know your thoughts.</span><o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal"><span lang="EN-GB">Regards,</span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB">Jonathan Aquilina</span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB"> </span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB">EagleEyeT</span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB">Phone +356 20330099</span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB">Sales – <a href="mailto:sales@eagleeyet.net">
sales@eagleeyet.net</a></span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-GB">Support – support@eagleeyet.net</span><o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal"><b>From:</b> Beowulf <beowulf-bounces@beowulf.org> <b>On Behalf Of
</b>Renfro, Michael<br>
<b>Sent:</b> Monday, 10 February 2020 03:17<br>
<b>To:</b> beowulf@beowulf.org<br>
<b>Subject:</b> Re: [Beowulf] Have machine, will compute: ESXi or bare metal?<o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">No reason you can’t, especially if you’re not interested in benchmark runs (there’s a chance that if you ran a lot of heavily-loaded VMs, there could be CPU contention on the host).
<o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal">Any cluster development work I’ve done lately has used VMware VMs exclusively.<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="xmsonormal" style="margin-bottom:12.0pt">On Feb 9, 2020, at 7:10 PM, Mark Kosmowski <mark.kosmowski@solidstatecomputation.com> wrote:<o:p></o:p></p>
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<p align="center" style="margin:0in;margin-bottom:.0001pt;text-align:center;background:white">
<b><span style="font-size:12.0pt;color:red;background:white">External Email Warning</span></b><o:p></o:p></p>
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<b><span style="font-size:12.0pt;color:red">This email originated from outside the university. Please use caution when opening attachments, clicking links, or responding to requests.</span></b><o:p></o:p></p>
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<p>I purchased a Cisco UCS C460 M2 (4 @ 10 core Xeons, 128 GB total RAM) for $115 in my local area. If I used ESXi (free license), I am limited to 8 vcpu per VM. Could I make a virtual Beowulf cluster out of some of these VMs? I'm thinking this way I can
learn cluster admin without paying the power bill for my ancient Opteron boxes and also scratch my illumos itch while computing on Linux.<o:p></o:p></p>
<p>Thank you!<o:p></o:p></p>
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<p class="xmsonormal">_______________________________________________<br>
Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing<br>
To change your subscription (digest mode or unsubscribe) visit https://beowulf.org/cgi-bin/mailman/listinfo/beowulf<o:p></o:p></p>
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