Posts by ivan
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41)
Message boards :
Number crunching :
CMS@Home needs about fifty good volunteers...
(Message 1713945)
Posted 16 Aug 2015 by  ivan
Post: I'm out too, my internet connection is too slow.. Cheers, mate. |
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Message boards :
Number crunching :
CMS@Home needs about fifty good volunteers...
(Message 1713944)
Posted 16 Aug 2015 by ivan
Post: Hi Ivan, I wish you the very very best of luck with this endeavour, but I fear that I am unable to help personally. Chris, I understand. |
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Message boards :
Number crunching :
CMS@Home needs about fifty good volunteers...
(Message 1713943)
Posted 16 Aug 2015 by ivan
Post: Download, mostly, the VM image is the best part of 1 GB. To be honest I haven't taken particular notice of the size of the returned data. Ah, yes, that's unfortunate, but I need to press on with this as soon as I can. Let the chips fall where they may, we don't need the most capable players, in fact we need more the average guys. |
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Message boards :
Number crunching :
CMS@Home needs about fifty good volunteers...
(Message 1713872)
Posted 16 Aug 2015 by ivan
Post: Does Virtualbox still need the "Oracle VM VirtualBox Extension Pack" (with matching version number) in order to use the remote desktop display? You're too quick, Richard! Yes, see my redacted post... |
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45)
Message boards :
Number crunching :
CMS@Home needs about fifty good volunteers...
(Message 1713867)
Posted 16 Aug 2015 by ivan
Post: Some of you know that I work on the CMS experiment at the LHC machine at CERN. Some of you (particularly those who came to lunch with Uli in London recently) also know that I've taken on the job of being the public spokesman for the CMS@Home project, which ultimately aims to provide distributed-computing facilities to the more blue-skies speculative CMS scenarios (we already have the WLCG "GRID" for mainstream simulation and analysis, of course). In the last few days, the pre-beta CMS@Home project has reached a major milestone -- we now can submit jobs to be run in the framework, and receive the results back for analysis. (HUZZAH!) Unfortunately, there are critics, there are sceptics, there are nay-sayers... So, I want to now run a test to compare CMS@Home against our traditional submission methods. And I have a natural target to present the results in just under four weeks' time. Plan is this: next Wednesday, all going well, I will submit identical jobs to both the traditional route and CMS@Home. It'll be a fairly significant set of work, but should take less than a week either way. Then I collate and compare the results, and hopefully win some critics around. We have currently a fairly enthusiastic set of volunteers (word leaked out early) but to do this in the time-scale I envisage, it'd be helpful to have about another fifty volunteers. I'll get onto how you can join in a minute... Unfortunately, CMS@Home is not a set-and-forget project like SETI@Home, it requires some user assistance. To start with, we run within a Virtual Machine (if you're already running projects such as vLHC@Home then this will have no problems for you). It's also resource-hungry. Basic requirements are: a) A 64-bit processor b) Installation of Oracle's VirtualBox VM. Any modern version should do, BOINC will download V4.3.12 if you let it, V4.3.30 is the latest in that series, V5.0 also works except in Windows 10. c) Good network connectivity, as there are large files to be transferred, especially at startup. I'd say a minimum of 10 Mbps; I survived at 6 Mbps but now I'm reduced to 3 Mbps I don't even try at home. So, how do you volunteer? You can join at http://boincai05.cern.ch/CMS-dev, but you need an invitation code to do so (we got a lot of spurious sign-ups early on, perhaps in preparation for spamming runs :-(. You can find the code at http://www.brunel.ac.uk/~eesridr/cmsinvite.txt (deliberately non-clickable). If you'd like to participate and have the requisite resources, please join as above, and test that you can run a task (a task runs for 24 hours, and tries to run as many "jobs" as possible in that time -- I create the jobs as required). With luck, you should start running a job within 30 minutes of downloading a task. When the task is running in BOINCMGR, select it and click on the VM button to the left; this will bring up a remote desktop display. At this point what you are most concerned about is the display of running jobs -- type ALT+F3 to bring up a "top" display (UNIX/Linux people will know what that means...); to further narrow in type 'u' (for user) and then 'boinc<cr>' (for the user name. Hopefully, within about 30 minutes you will see a job called cmsRun occupying the top line of the job display, using close to 100% of CPU time. If that happens, please send me a short personal message along the lines of "Success!". Once I've had about fifty of these I'll delete the invitation code; don't be miffed if you miss out -- if this works how I hope, we'll be open for business before the year's out! Happy Crunching! [Edit] Oh, to see the VBox display you'll also need the appropriate Extension Pack for your version of VirtualBox -- download here. [/Edit] |
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46)
Message boards :
Number crunching :
PC Upgrading.
(Message 1712754)
Posted 14 Aug 2015 by ivan
Post: Criekey Iona only $220 bucks for 2 systems cost me that just for the AMD FX chip let alone with MoBo and 16 gig of Ram , nice score ...what ever one you chose I think you got your AUD<->GBP conversion the wrong way 'round, Glenn. :-) It's 2:1, so more like $900. |
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Message boards :
Number crunching :
Anybody running SETI on a switch?
(Message 1711668)
Posted 12 Aug 2015 by ivan
Post: Only 15TB? Try 32TB! Well, it's an old server (20 or so 1 TB drives) that I rescued when it was retired for being out of warranty -- it's our group data server/backup (still 13 TB free). I'm thinking of slotting 4x 8TB Helium drives in the spare bays of one of my 20-core servers if I can convince The Professor to find the dosh, our sysadmin wants to get some idea of their reliability before we switch to them in ~2 years' time (he tells me we'll have something like 1.5 PB in our data centre when the current tender is met and delivered). |
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Message boards :
Number crunching :
Anybody running SETI on a switch?
(Message 1711407)
Posted 11 Aug 2015 by ivan
Post: Anybody running SETI on a switch? No, but I'm running it on a 15 TB disk server. |
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Message boards :
Number crunching :
extremely slow machine
(Message 1711394)
Posted 11 Aug 2015 by ivan
Post: I also have a 24 core xeon machine. Comparing your APR of 9.78 GFLOPS to my hosts APR of 11.76 GFLOPS does seem that far off when you compare the CPU specs. What are you using to monitor your CPUs? boincmgr (if you can get it working on your particular Linux...) will show how many jobs are running; top shows how many jobs are running and what the instantaneous CPU usage is; gkrellm will show graphs of CPU usage (I usually set mine to 300 secs history) and if you set up lm_sensors you can monitor temperatures and fan speeds, etc, as well (there's a plugin to show CPU speeds, too). gnome-system-monitor also shows individual CPU usage, but overlaid on one graph, so not ideal for a 24-core machine. |
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Message boards :
Number crunching :
Panic Mode On (99) Server Problems?
(Message 1710971)
Posted 10 Aug 2015 by ivan
Post: I may have missed this, as I only read up 20 or so posts, but I have 348 tasks in progress, and normally I would only have 300. 100 for the CPU, and 100 each for my GPU's. Did something change? Yes, you added a computer... 7715048 has 300 tasks, 5483835 has 48. |
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Message boards :
Number crunching :
extremely slow machine
(Message 1710103)
Posted 8 Aug 2015 by ivan
Post: Hi I presume you have HyperThreading turned on. Your completed tasks for 100 credits take roughly twice as long as my 2x6-core Xeon with HT off so I don't think it's doing too badly. You need to wait a lot longer than two days to see what your RAC finally asymptotes to. |
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Message boards :
Number crunching :
Panic Mode On (99) Server Problems?
(Message 1709846)
Posted 7 Aug 2015 by ivan
Post: "...everything is one inch longer than its length..." Can I apply that recursively? (Like I do with [Theodore] Sturgeon's Revelation: "90% of everything is crud!") |
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Message boards :
Number crunching :
SETI/BOINC Milestones [ v2.0 ] - XXIX
(Message 1709036)
Posted 5 Aug 2015 by ivan
Post: Congratz on the Milestones guys, hit 5 million myself a while ago. Hmm, just slipped up another point in the overall credit but WB5TUF - Glenn is coming up fast on my six. :-( tottoatnorway is still leading me, but is his RAC slipping? Tune in next week for a new exciting adventure of "Pigs in Spaaace!". Moriarty: "You silly, twisted boy!" |
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Message boards :
Number crunching :
I seem to have found a Windows 10 / BIONC and/or S@H problem
(Message 1707825)
Posted 2 Aug 2015 by ivan
Post: i can honestly say i have no issue with the intel igpu driver it works flawless on my i7 nuc and the i5 nuc My little Celeron J1900 box (£130 at eBuyer) runs as a Win10 test-bed. AFAIK it's up to date with everything Microsoft throws at it. It frequently hangs on GPU jobs, and I have to abort them. Pity, because when they do run to completion they have about 60% of the performance of one of the four CPU cores... |
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Message boards :
Number crunching :
SETI/BOINC Milestones [ v2.0 ] - XXIX
(Message 1707773)
Posted 2 Aug 2015 by ivan
Post: My little Tegra TK1 "Jetson" is just coming up to its first birthday (next Wednesday), and its accumulated credit is a shade over 500k! (~107,000th computer overall.) Hippo, birdie, two ewes... |
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56)
Message boards :
Number crunching :
New Machine i just bought to crunch
(Message 1707458)
Posted 1 Aug 2015 by ivan
Post: http://www.ebay.com/itm/Dell-PowerEdge-R900-LFF-4x-2-93GHz-Quad-Core-X7350-32GB-RAM-2x-750GB-HDD-/181803272229?ssPageName=ADME:L:COSI:US:1123 Well, the rear view shows Dell's ID number (under the right-side fan) so you should be able to look up its delivery spec on Dell's support website (assuming it's a shot of the one they'll actually ship...). 16 Xeon cores should be OK, I figure on ~1000 RAC/core, depending on age (I don't run HyperThreading on our work machines, we need maximum single-thread performance as we don't multithread our applications yet). [Edit] Checked out the ID. The unit pictured shipped with only two CPUs as far as I can see. The manual says that it has 3x PCIE_X4 and 4 PCIE_X8 slots, but it's not clear if the sketch is adequately representing the sockets. You may have trouble putting a PCIe_X16 card in them if they are short sockets. [/Edit] |
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57)
Message boards :
Number crunching :
Current motherboards that can support 6+ GPUs?
(Message 1707109)
Posted 31 Jul 2015 by ivan
Post: Hi all, I've done some searching but everything I've found is several years out-of-date, I was looking for motherboard recommendations that can support at least 6 GPUs. I've found many that have 6 or 7 PCI slots, but all I've seen only appear to support 4 GPUs. Any advice appreciated, thanks. http://www.theregister.co.uk/2015/07/31/supermicro_2028gr_trt_server_review/ |
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Message boards :
Number crunching :
Windows 10 - Yea or Nay?
(Message 1706242)
Posted 29 Jul 2015 by ivan
Post: If 10 is the F'up I suspect, I may abandon Windows totally, and go for some Linux version. Works OK for me. Put it on my XP machine at home when it lost its HDD; the AthlonX2 that handled 32-bit XP OK wasn't up to 64-bit Linux, so I swapped in an i7 motherboard & CPU. I think part of the problem getting used to it was the Cinnamon display manager, it's a bit top-heavy. I put Mint on an old Atom netbook, using Mate rather than Cinnamon and that seems to work well, though I haven't tried to do much with it. |
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Message boards :
Number crunching :
Panic Mode On (99) Server Problems?
(Message 1706064)
Posted 28 Jul 2015 by ivan
Post: /me runs away, before someone finds the Straight Jacket. Just a word of advice from a pedant -- it's a straitjacket, from the word strait meaning a hindrance, a hardship, a narrow part or passage; as in dire straits, or Bass Strait, Magellan Strait or Bering Strait, or strait-laced. :-) |
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Message boards :
News :
Big boost for SETI@home from Yuri Milner's Breakthrough Listen Initiative
(Message 1703567)
Posted 21 Jul 2015 by ivan
Post: Wonderful news!!!!! http://www.telegraph.co.uk/news/uknews/11749475/Thankfully-no-hipsters-were-injured-London-Fire-Brigade-apologises-for-Shoreditch-tweet.html |
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