http://permalink.gmane.org/gmane.comp.clustering.beowulf.general hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29508 <pre>Graham I also cannot connect to www.beowulf.org. I think it may be a routing/firewall issue near the beowulf.org end. I emailed the list owners, beowulf-owner&lt; at &gt;beowulf.org, a month ago but did not receive any replies, I'm not sure if the email did get through, it did not bounce! However, if you need to change you subscriber options, then you can use the email interface instead. Send an email to beowulf-request&lt; at &gt;beowulf.org with just the word "help" (without quotes) in the body, you will then get a reply with all the options available to you. The -request email address did work for me :-) HTH Fred On 03/05/12 13:40, Douglas Eadline wrote: </pre> Fred Youhanaie 2012-05-03T13:44:55 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29507 <pre> I know Penguin runs the list, but I'm not sure who to contact, I'll forward it to the list. Hopefully someone will be able to provide an answer. -- Doug URL doesn't work (for me) &gt; either bounce or vanish down a /dev/null hole. On Behalf Of Douglas Eadline Computing To change your subscription (digest mode or unsubscribe) visit To change your subscription (digest mode or unsubscribe) visit designated recipient, please notify the sender immediately, and delete the original and any copies. Any use of the message by you is prohibited. </pre> Douglas Eadline 2012-05-03T12:40:59 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29506 <pre>-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 27/04/12 11:48, Douglas Eadline wrote: An interesting point, the whole AMD/SeaMicro thing had passed me by I must admit, and so it will be interesting to see how both deals do pan out for the purchasers, especially how Intel balance/partition up their IB and Cray interconnect investments. cheers! Chris - -- Christopher Samuel - Senior Systems Administrator VLSCI - Victorian Life Sciences Computation Initiative Email: samuel&lt; at &gt;unimelb.edu.au Phone: +61 (0)3 903 55545 http://www.vlsci.unimelb.edu.au/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk+h5F0ACgkQO2KABBYQAh+MAgCfe+vLd87cW5rBo9KPwDEDC1dN yc0AoJcWfFNZxyzEGxuoRTV2wEFd7WZN =bWkM -----END PGP SIGNATURE----- </pre> Christopher Samuel 2012-05-03T01:50:21 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29505 <pre>Yeah well it seems intel is moving that direction. The big mystery question is: why those cheap buys (qlogics and mellanox). Why not Nvidia as well? You need a good chip in the end, and nvidia and AMD have probably a huge amount of patents in manycore/gpu domain that would be pretty much needed as well for intel. If you just want to espionage, take over some cheap communication fabrics and/or HPC manufacturers - if you want to make a profit you also need a fast chip. Now it's true the Kepler from Nvidia is 28 nm and not 22 nm, yet it's very impressive. If Nvidia in say a year from now manages to produce a great Tesla based upon it, they rock 'n roll and should be able to mount 2 gpu's on 1 card as the datapath is just 256 bits wide and not 384 bits as their previous one. Does anything i write here make sense? On May 2, 2012, at 10:42 PM, Douglas Eadline wrote: </pre> Vincent Diepeveen 2012-05-03T00:05:35 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29504 <pre>Wow, that was fast: Cray Completes Sale of Interconnect Hardware Assets to Intel http://investors.cray.com/phoenix.zhtml?c=98390&amp;p=irol-newsArticle&amp;ID=1690642 -- Doug </pre> Douglas Eadline 2012-05-02T20:42:35 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29503 <pre>You have no need of actually calculating something serious? Some sort of 2 core chip without ecc RAM and without low latency infiniband network that is enough for your calculations? Usually such cards are a $100 or so a piece. then add chip costs. i3 is right now. http://ark.intel.com/products/50177/Intel-Core-i3-560-Processor-(4M- Cache-3_33-GHz) $117-$138 introduction price for 3.3Ghz dual core chip. And it's TDP 73 watt. Add mainboard. Probably at full load we're looking at 150 watt or so. So best case you're looking at a $250 pricerange, or $125 a core, without network yet and without RAM and 75 watt a core. Isn't that a tad expensive? My nodes here, network not counted, were $25 a core (2.5Ghz Xeon L5420, they're under $30 on ebay now) and total box including Mellanox QDR card eats 170 watt from the power tap at full load (100 watt idle but that's not a relevant measure in HPC, much as opposed to server farms) so that's 21 watt a core. On May 1, 2012, at 5:10 PM, Hearns, John</pre> Vincent Diepeveen 2012-05-01T15:26:51 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29502 <pre>http://www.theregister.co.uk/2012/05/01/intel_pi_rival_nuc/ Ohhh.... Thinking of how to cool a rack full of these things with 2x16Gbyte DIMMS in each. Looks like you could seal that case and use immersive cooling - partially dip the case in the coolant but leave the top dry??? 2x mini PCIe slots for that fast interconnect Though - does anyone know much about networking over thunderbolt? John Hearns | CFD Hardware Specialist | McLaren Racing Limited McLaren Technology Centre, Chertsey Road, Woking, Surrey GU21 4YH, UK T: +44 (0) 1483 262000 D: +44 (0) 1483 262352 F: +44 (0) 1483 261928 E: john.hearns&lt; at &gt;mclaren.com W: www.mclaren.com &lt;http://www.mclaren.com/&gt; The contents of this email are confidential and for the exclusive use of the intended recipient. If you receive this email in error you should not copy it, retransmit it, use it or disclose its contents but should return it to the sender immediately and delete your copy. </pre> Hearns, John 2012-05-01T15:10:27 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29501 <pre> Some of things I read suggested this is about server fabrics. AMD's purchase of SeaMicro out from under Intel's arm may have had something to do with it. Intel needed a fabric for dense server boxes. I would think there may be a "back license" in there for Cray somewhere. Not sure this is an HPC play. -- Doug </pre> Douglas Eadline 2012-04-27T01:48:35 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29500 <pre>-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 25/04/12 16:52, Greg Lindahl wrote: Yeah, I'd guess that AMD would be a little worried, perhaps they should look at buying Gnodal, where some of the Quadrics people ended up, to get in on that act.. :-) - -- Christopher Samuel - Senior Systems Administrator VLSCI - Victorian Life Sciences Computation Initiative Email: samuel&lt; at &gt;unimelb.edu.au Phone: +61 (0)3 903 55545 http://www.vlsci.unimelb.edu.au/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk+Z960ACgkQO2KABBYQAh/TqQCfS4V3sNu3pf7cOIOJbSgRrmPB KEAAoIzjmfcz9J+3ot1TYNhbC2DIOTy4 =ndpG -----END PGP SIGNATURE----- </pre> Christopher Samuel 2012-04-27T01:34:37 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29499 <pre> On Apr 25, 2012, at 8:52 AM, Greg Lindahl wrote: Though it seems contradictory statements, for a very huge company it's not a problem to own 2 different productlines. Being 'director' of a company like that is kind of being a small manager within intel. Yet managing these newly acquired intel productlines requires a total different sort of leadership if i may say so. It's not babysitting a product - it requires in the long term real innovative form of thinking. Such persons aren't working usually as a manager at a huge company. These huge companies are total different organized and have such creative persons at total different spots in the organisation, requiring far more overhead in terms of number of employees, to get the same thing done. That means they need more turnover out of this business than Cray and Qlogics had, meanwhile the manager that after a while takes the spot of the CEO now, he will want to grow further and deeper into the giants company business, so it's always a ga</pre> Vincent Diepeveen 2012-04-25T08:52:11 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29498 <pre> This is a real surprise. Intel said then that the IB stuff they bought from QLogic/PathScale was intended for exoscale computing. For this buy Intel says: And a Cray guy said, this time: Very interesting. </pre> Greg Lindahl 2012-04-25T06:52:20 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29497 <pre>http://www.eetimes.com/electronics-news/4371639/Cray-sells-interconnect-hardware-unit-to-Intel that's one market where AMD no longer plays eh? </pre> Mark Hahn 2012-04-25T02:58:39 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29496 <pre>When i was in iceland some years ago for a long term meeting (no not the start of wikileaks - i was there for a less harmful reason) the thing happened i had feared - for some days when i was there half of the internet adresses in Europe mainland were impossible to reach from iceland. This happens regurarly from there. I had taken the server lucky with me, thanks to www.hotels.nl for sponsoring that. Usually Icelanders have 7 jobs, have more chessgrandmasters per 100k inhabitants than any other nation; actually tomorrow i might play an icelander who emigrated to Europe. So the guy who's heading the new datacenter there is probably a busy man. Just read on... He'll first need to build a construction against the 3000+ small earthquakes a year Iceland has or so, then every component needed he needs to import of course; a fuse broken? In Iceland that's BAD news - they might not be in store in a cirlce of 1000 kilometer around you :) Then when something arrives at the airport, your datacente</pre> Vincent Diepeveen 2012-04-21T00:02:40 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29495 <pre> Thanks, and also thanks to Gilad from Mellanox who put me in contact with another person who was able to answer this and other questions. One valuable thing I learnt was that IPoIB includes neighbor MTU information and so a system sending IP packets from a connected mode host to a datagram mode host will already know the destinations MTU. cheers, Chris </pre> Chris Samuel 2012-04-20T07:47:46 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29494 <pre>Combine this article: "A Cool Place for Cheap Flops" http://www.hpcwire.com/hpcwire/2012-04-11/a_cool_place_for_cheap_flops.html With this paper: "Relativistic Statistical Arbitrage" dspace.mit.edu/openaccess-disseminate/1721.1/62859 And it's looks like Iceland has a new industry: Datacenters for the high-frequency trading (HFT) gang. Just remember - you heard it here first, folks! ;) </pre> Prentice Bisbal 2012-04-20T13:37:34 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29493 <pre>The next release of Open Grid Scheduler/Grid Engine will be released at the Gompute User Group Meeting. The Gompute User Group Meeting is a free, 2-day, HPC event in Gothenburg, Sweden. Register for the event at: http://www.simdi.se/ ** Please let me know if you are interested in a Grid Engine track. Gridcore/Gompute contributed booth space at SC11 for the Grid Engine 2011.11 release (the first major release of open-source Grid Engine after separation from Oracle), and joined the Open Grid Scheduler project in April 2012. Rayson ================================= Open Grid Scheduler / Grid Engine http://gridscheduler.sourceforge.net/ Scalable Grid Engine Support Program http://www.scalablelogic.com/ </pre> Rayson Ho 2012-04-19T18:34:08 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29492 <pre>Taras, Updated for GE2011.11: http://gridscheduler.sourceforge.net/security.html Note that with this patch, users won't be able to pass dangerous env. vars into the environment of epilog or prolog (and SGE's rshd, sshd, etc) via qsub -v or qsub -V . However, the user job environment is not affected. Also, any of those "dangerous" env. vars can be inherited from the execution daemon's original start environment (so if LD_LIBRARY_PATH is really needed, set it in the execution daemon's environment). Compare to other implementations, we think our fix is not intrusive at all. We have never seen any sites running epilog or prolog that needs users' LD_LIBRARY_PATH to function. Rayson ================================= Open Grid Scheduler / Grid Engine http://gridscheduler.sourceforge.net/ Scalable Grid Engine Support Program http://www.scalablelogic.com/ On Thu, Apr 19, 2012 at 10:26 AM, Rayson Ho &lt;raysonlogin&lt; at &gt;gmail.com&gt; wrote: </pre> Rayson Ho 2012-04-19T17:22:05 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29491 <pre>Right, the GE2011.11p1.patch diff is against GE2011.11. GE2011.11p1 (ie. trunk) is compatible with GE2011.11, and GE2011.11 is also compatible with SGE 6.2u5. I can quickly create a diff for GE2011.11 during lunch time today - will let you know when it is done. Rayson ================================= Open Grid Scheduler / Grid Engine http://gridscheduler.sourceforge.net/ Scalable Grid Engine Support Program http://www.scalablelogic.com/ On Thu, Apr 19, 2012 at 8:31 AM, Taras Shapovalov &lt;taras.shapovalov&lt; at &gt;brightcomputing.com&gt; wrote: </pre> Rayson Ho 2012-04-19T14:26:19 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29490 <pre> On 19. apr. 2012, at 10.10, Chris Samuel wrote: Datagram mode is required. For connected mode, the node is required to establish both an UD QP (for nodes not capable of connected mode and multicast) and an RC QP. During address resolution, the requester capability is included as part of the L2 address. So yes, it works. -h </pre> Håkon Bugge 2012-04-19T09:06:06 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29489 <pre> Umm, yes, we know how to set it; the question is whether introducing nodes that have it set onto an IB fabric with nodes in datagram mode will cause issues and/or instability ? For instance can nodes in connected mode talk to nodes in datagram mode, and vice versa ? cheers, Chris </pre> Chris Samuel 2012-04-19T08:10:57 http://permalink.gmane.org/gmane.comp.clustering.beowulf.general/29488 <pre>echo connected &gt; /sys/class/net/ib0/mode -h On 19. apr. 2012, at 03.53, Christopher Samuel wrote: </pre> Håkon Bugge 2012-04-19T07:04:53 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.clustering.beowulf.general