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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: NVIDIA Support and Multicore.... |
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Thread Status: Active Total posts in this thread: 49
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
6 minutes left
----------------------------------------5 minutes left 4 minutes left 2 minutes left Oh, already done... well what can I say ... I920 on BillyGates OS v Q6600 on LinusTorvald OS. Milkyway@home 0.07 milkyway_nbody de_nbody_model3_3_4426_1286275250_0 01:56:31 (01:56:03) 05-10-2010 16:36 Ready to report And the result from the MW site: 212794525 161223078 5 Oct 2010 13:33:14 UTC 5 Oct 2010 15:45:55 UTC Completed and validated 6,991.92 6,963.09 60.26 60.26 MilkyWay@Home N-Body Simulation v0.07 Just 28 seconds gap between Elapsed and CPU time. There was another weird bonus... the 2 same time started CEP2 jobs were showing 98 percent efficiency. I have no eggsplanations for this... MW lite I suppose. Will test on W7-64 if ever I boot back to see how they do on that platform to get a real peer-peer comparison. But beyond, space science as a volunteer crunch project does not have my keen interest.
WCG
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Anyone interested in GPU crunching a biomedical project which is also the most demanding GPU crunching in the BOINC world might consider visiting GPUGrid
http://www.gpugrid.net/ The suggested 500w usage for crunching a GTX480 is not even close. One of my team mates did some killawatt testing, which is good enough for estimates, that showed typically your GPU will only use about 60% of it's rated TDP because it only uses the shader and not the core internal components of the GPU. A GTX480 comes in around 180w under full GPU crunching load. |
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Dataman
Ace Cruncher Joined: Nov 16, 2004 Post Count: 4865 Status: Offline Project Badges: 
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Anyone interested in GPU crunching a biomedical project which is also the most demanding GPU crunching in the BOINC world might consider visiting GPUGrid http://www.gpugrid.net/ The suggested 500w usage for crunching a GTX480 is not even close. One of my team mates did some killawatt testing, which is good enough for estimates, that showed typically your GPU will only use about 60% of it's rated TDP because it only uses the shader and not the core internal components of the GPU. A GTX480 comes in around 180w under full GPU crunching load. Spot on Snow Crash. If you want to give your nVidia GPU a real work out on some very promising biomed projects, give GPUGrid a try. Here are their projects: http://www.gpugrid.net/science.php However, it will drive your GPU to near 100% and uses about a half a CPU core/wu. I always recommend MW for beginner GPU crunchers. Then GPUGrid when you want more of a challenge. Either way, it is a lot better use of your card than wasting it (and your time) playing WoW!!  I find my 2xx cards are somewhere around 100w @ 100% but have never really looked into it. TIP: You can now click on 'attach to project" and the list now shows which BOINC projects have GPU processing and whether they use nvidia or ati cards or both.    [Edit 1 times, last edit by Dataman at Oct 5, 2010 4:42:39 PM] |
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Ingleside
Veteran Cruncher Norway Joined: Nov 19, 2005 Post Count: 974 Status: Offline Project Badges: 
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28 minutes, 19.097% >>>>>>> 146 minutes and declining on a stock Q6600... that than is 6 / 2.5 = 2.4 times faster (but do not know what if that GTX260's vs 6 to 6 1/2 hours on a i7 920 CPU. is running hyperthreading... presume so). For now, once again, Hallelujah... Linux it is. Oh, already done... well what can I say ... I920 on BillyGates OS v Q6600 on LinusTorvald OS. Milkyway@home 0.07 milkyway_nbody de_nbody_model3_3_4426_1286275250_0 01:56:31 (01:56:03) 05-10-2010 16:36 Ready to report Dataman runs the "Milkyway@home"-application on his GPU's, so if he's not made a mistake, his cpu-result is also with the "Milkyway@home"-application. Your result on the other hand is with the "MilkyWay@Home N-Body Simulation"-application...  "I make so many mistakes. But then just think of all the mistakes I don't make, although I might." |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
hmmm, there's nothing of the kind indicating a differential on the MW project selection page...
----------------------------------------Use CPU (enforced by 6.10+ clients) yes Use NVIDIA GPU if present (enforced by 6.10+ clients) no Use ATI GPU if present (enforced by 6.10+ clients) no It's anyway not relevant as when I have run a few under Windows 7-64 on same machine, I've got the data from own observation. The FPOPS in the header are for sure nonsense to get the in at almost 20 hours with a DCF on default 1.00000 and then doing them in less than 2. Why are we talking MW platform performance on WCG  ?edit: Now this is a puzzler... who crunches on GPU whilst using the system... some duh factor there. Amount of concurrent blocks(NVIDIA GPUs Only) Higher values lead to shorter completion times at the expense of interface lag (1 .. 50000, default is 128
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 1 times, last edit by Sekerob at Oct 5, 2010 7:20:00 PM] |
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Dataman
Ace Cruncher Joined: Nov 16, 2004 Post Count: 4865 Status: Offline Project Badges:
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Dataman runs the "Milkyway@home"-application on his GPU's, so if he's not made a mistake, his cpu-result is also with the "Milkyway@home"-application. That is correct, Sir.  MW is the only place I can find where you can come close to comparing "apples to apples".  You can see:- How long it takes your CPU vs your GPU - How long it took your wingman to do the same wu on his CPU vs your GPU (and vise versa) - And if you want to dig through a lot of data, You can find a GPU comparason where you and your wingman have the same CPU/GPU config. and one of you ran it on a GPU and the other on a CPU. (Unlike WCG, most DC projects allow you to look at your wingman's config if the wingman allows it.) However doing the latter, also means you have way too much spare time on your hands.  |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
So what does determine that one or the other CPU version is send... selecting the GPU card with Yes?
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WCG
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Dataman
Ace Cruncher Joined: Nov 16, 2004 Post Count: 4865 Status: Offline Project Badges:
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The be honest, I am not sure how the code mechanics works. As near as I can tell, if BOINC requests GPU work then the GPU app for the wu is selected and the CPU app for the wu if CPU work is requested.
----------------------------------------I stopped looking at code when I retired. Yes, in MW preferences you can select GPU only, CPU only or both. |
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Dataman
Ace Cruncher Joined: Nov 16, 2004 Post Count: 4865 Status: Offline Project Badges:
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Here's my pref's for MW
----------------------------------------Resource share If you participate in multiple BOINC projects, this is the proportion of your resources used by MilkyWay@home 100 Use CPU (enforced by 6.10+ clients) no Use NVIDIA GPU if present (enforced by 6.10+ clients) yes Use ATI GPU if present (enforced by 6.10+ clients) no Is it OK for MilkyWay@home and your team (if any) to email you? yes Should MilkyWay@home show your computers on its web site? yes Default computer location --- Amount of concurrent blocks(NVIDIA GPUs Only) Higher values lead to shorter completion times at the expense of interface lag (1 .. 50000, default is 128) 384 |
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kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges: 
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Am I right in recalling that Milky Way requires a double-precision-capable Nvidia card? There was some reason I couldn't run it, and I think that was it.
----------------------------------------I run GPUgrid on one of my machines, while the CPUs crunch WCG. GPUgrid runs ok even on some GPUs that the website says are too slow. Since I'm running the computer 24/7 for WCG, the GPU also runs 24/7 and so easily completes GPUgrid WUs before their deadlines.  |
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