Message boards : Graphics cards (GPUs) : Very slow performance using GPU
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I have been running Rosetta for a while, having no problems using Vista and Linux. I bought a 8500GT to improve the computing. Found out the hard way that it wouldn't work on Linux, but I also have problems on vista. | |
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 Paul D. BuckSend message Joined: 9 Jun 08 Posts: 1050 Credit: 37,321,185 RAC: 0 Level  Scientific publications      | |
I have been running Rosetta for a while, having no problems using Vista and Linux. I bought a 8500GT to improve the computing. Found out the hard way that it wouldn't work on Linux, but I also have problems on vista. When you say the most current version of BOINC, which version is that? (ALWAY give the version number) ... also it is not clear to me which system you are attempting to work with now... Vista? 32-Bit or 64-Bit? Lastly, which version number of video driver? The *GENERAL* experience here is that BOINC Manger version 6.5.0 is about the best to run CUDA and non-CUDA tasks on a machine. The 0.07 number is just an estimate BTW, the actual usage if you are running 6.62 tasks should be virtually non-existent CPU load on both Windows and linux. | |
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[B^S] Brandon Kuschel Send message Joined: 28 Aug 08 Posts: 6 Credit: 981,346,542 RAC: 998,769 Level  Scientific publications  | |
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Please note that tasks run on an 8500GT will be very slow even under the best of circumstances. | |
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Remember, CPU load is not the same as GPU load. Also, keep in mind that the settings for CPU usage don't affect GPU usage running CUDA. That's a problem many have seen, their graphics cards run full tilt non-stop for CUDA processing, even if thier CPU's are almost idle, so they need to be sure to keep the video card cool. Otherwise, the card may overheat and become unstable giving driver errors or even BSOD's. But if you can do that, yeah, CUDA apps can run on the video card leaving your CPU almost idle to run non-CUDA apps or tasks. | |
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ExtraTerrestrial Apes Volunteer moderator Volunteer tester  Send message Joined: 17 Aug 08 Posts: 2705 Credit: 1,311,122,549 RAC: 0 Level  Scientific publications | |
Remember, CPU load is not the same as GPU load. That's exactly the point. The GPU is crunching along and since app 6.62 it doesn't need major support from the CPU any more. If you set BOINC for 100% CPU use you should get your normal number of cpu tasks (1, 2, 4 .. whatever number of cores you have) and an additional GPU task. By the way, if you're only running on the cpu you shouldn't be able to notice a difference between 95 and 100% - thanks to scheduling and task priority black magic ;) However, with a 8500GT running GPU-Grid your system *should* come to a crawl, which is caused by the low speed of that card due to the small number of stream processors (32). No BOINC settings are going to change this. MrS ____________ Scanning for our furry friends since Jan 2002 | |
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Scott Brown Send message Joined: 21 Oct 08 Posts: 144 Credit: 2,973,555 RAC: 0 Level  Scientific publications  | |
The 8500GT is actually a 16 shader card, and thus, will also have trouble making deadlines. | |
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ExtraTerrestrial Apes Volunteer moderator Volunteer tester Send message Joined: 17 Aug 08 Posts: 2705 Credit: 1,311,122,549 RAC: 0 Level Scientific publications | |
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Oh dear, I should go to bed.. :D | |
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Paul D. Buck Send message Joined: 9 Jun 08 Posts: 1050 Credit: 37,321,185 RAC: 0 Level Scientific publications | |
Oh dear, I should go to bed.. :D Um, one more point ... with 6.5.0 you will get all cores and the GPU ... with 6.4.5 and prior most have to make that odd little config file to get cores + 1 operation ... | |
| ID: 6370 | Rating: 0 | rate:
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Tom Shaffer Send message Joined: 6 Jan 09 Posts: 1 Credit: 231,798,781 RAC: 0 Level  Scientific publications | |
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Upon my learning of CUDA,I replaced the 256MB ATI graphics card that came with my computer with a 512MB NVIDIA GeForce 9400 GT graphics card. The GeForce 9400 GT card works fine with seti@home and seti@home beta. However when I added GPUGRID to the the boinc projects that run on my computer, completion of GPUGRID projects proved to be inpossible. For this reson I am not taking any GPUGRID projects until the problem can be corrected. | |
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ExtraTerrestrial Apes Volunteer moderator Volunteer tester Send message Joined: 17 Aug 08 Posts: 2705 Credit: 1,311,122,549 RAC: 0 Level Scientific publications | |
For this reson I am not taking any GPUGRID projects until the problem can be corrected. That's perfectly fine and not a problem, it's actually by design. GPU-Grid advises a card with more than 50 stream processors (shaders) for good reason.. and your card has only 16. So if you're fine with running seti on the card then everyone is happy ;) MrS ____________ Scanning for our furry friends since Jan 2002 | |
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Message boards : Graphics cards (GPUs) : Very slow performance using GPU
