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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Glasgow University have a raspberry pi cluster in the Comp Sci department<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><a href="https://raspberrypicloud.wordpress.com/">https://raspberrypicloud.wordpress.com/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Seems to be one at Southampton also:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">http://www.southampton.ac.uk/~sjc/raspberrypi/<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Beowulf [mailto:beowulf-bounces@beowulf.org]
<b>On Behalf Of </b>Lux, Jim (337C)<br>
<b>Sent:</b> 16 May 2016 18:43<br>
<b>To:</b> Jonathan Aquilina <jaquilina@eagleeyet.net>; Carlos Linares Lopez <clinares@inf.uc3m.es><br>
<b>Cc:</b> beowulf@beowulf.org<br>
<b>Subject:</b> Re: [Beowulf] recommendations on ARM distro?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Someone has done a fairly large (64 nodes) cluster of raspis.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Computationally, it’s not a great solution in a GFLOPS/Watt or GFLOPS/money sense.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">OTOH, if you wanted to have a class assemble toy clusters, the hardware cost is fairly low.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I might choose a BeagleBone Black instead of a raspi, but that’s purely a personal preference – it took me less time to get my BBB up and running
(<1 hr from opening the box) than the raspi (half a day, mostly trying to get a bootable image together in a Windows environment).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I think there is some significant pedagogical value in actually bringing up a cluster from scratch and dealing with sysadmin issues like assigning
IP addresses, how you push software to the nodes, etc. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">One problem with the “cheap and cheerful” boards is that the boards are easy, but you need power supplies, some sort of way to manage the hardware
(although “spread out on the table top” is fine at first, but, please, get an ESD mat and wear a wrist strap…)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The other problem is getting visible output – you could spend more on displays, cables, KVM, than on the computers.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">If you could find inexpensive $100 laptops, that might be a better starting point. They have a keyboard, a display, a power supply, etc. You can
get recertified HP laptops for <$90 from newegg.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">If you’re a glutton for punishment, you could use WiFi for the networking..<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Jim Lux<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">(818)354-2075 (office)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">(818)395-2714 (cell)<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Beowulf [<a href="mailto:beowulf-bounces@beowulf.org">mailto:beowulf-bounces@beowulf.org</a>]
<b>On Behalf Of </b>Jonathan Aquilina<br>
<b>Sent:</b> Saturday, May 14, 2016 11:45 PM<br>
<b>To:</b> Carlos Linares Lopez <<a href="mailto:clinares@inf.uc3m.es">clinares@inf.uc3m.es</a>><br>
<b>Cc:</b> <a href="mailto:beowulf@beowulf.org">beowulf@beowulf.org</a><br>
<b>Subject:</b> Re: [Beowulf] recommendations on ARM distro?<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">What is everyone's thoughts on raspi's for a cluster?<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
<p><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif">On 2016-05-12 21:58, Carlos Linares Lopez wrote:<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New"">My first e-mail in the list, ...something I finally understand! :)<br>
<br>
I have a small cluster of 3 odroid u3 running Unbuntu 14.04 LTS (I do<br>
have to update it these days to 16.04). I use condor and it works very<br>
nicely<br>
<br>
You can see a short demo here: <a href="https://www.youtube.com/watch?v=t4QPX50u4rg">
https://www.youtube.com/watch?v=t4QPX50u4rg</a><br>
<br>
<br>
<br>
El 12/5/16 a las 21:09, C Bergström escribió: <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New"">On Fri, May 13, 2016 at 2:59 AM, Mark Hahn <<a href="mailto:hahn@mcmaster.ca">hahn@mcmaster.ca</a>> wrote:
<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New"">Hi all,<br>
we have a (tiny) experimental ARM box - based on Cavium ThunderX, but have<br>
run into basic issues with distros (ie, ARM+ldap+ubuntu=fail).<br>
<br>
If you're using ARM (on something bigger than a RPi), what distro are you<br>
using?<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New"">I don't have 1st hand experience with the combination you're<br>
referencing above, but peanut gallery comments<br>
<br>
1) I'd encourage you to retry the default Cavium provided OS - I<br>
realize that the package manager may not be fun, but they have thus<br>
far been good about software support for our needs<br>
<br>
2) Fedora has put quite a bit of effort into their AArch64 distro<br>
------------<br>
I'm happy to connect you to people @ARM or @Cavium which is likely a<br>
better support channel for critical software like this.<br>
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