BOINC Not Using Both GPUs
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Message boards : Number crunching : BOINC Not Using Both GPUs
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Did a little looking around (I'm sure the answer is out there) but can't find it. | |
ID: 981657 ·  | |
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Do you have anything plugged into the card? A second monitor or dummy plug may be needed. Also, have you tried extending the desktop to the second card? I've seen it happen a couple of times where Windows can see a device fine but Boinc can't. For me, a dummy plug did the trick. | |
| ID: 981659 · | |
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Thanks Dave....that is what I was trying to remember seeing as advice for this. At the moment the second card does not have anything plugged into it. The desktop is not extended to it either. No sli of course as well. | |
| ID: 981663 · | |
Thanks Dave....that is what I was trying to remember seeing as advice for this. At the moment the second card does not have anything plugged into it. The desktop is not extended to it either. No sli of course as well. With 2 cards I plugged a second monitor in and did a restart and was able to disconnect 2nd monitor and didn't need it again. May give that a try if you have one to try. Once I put 3 in I needed dummy plugs or Boinc only sees 2 cards. ____________ Official Abuser of Boinc Buttons... And no good credit hound!  | |
| ID: 981670 · | |
It did show up at one time while I had this box running Windows Home Server but I've since switched it over to Windows 7 for 64 bit. Has <use_all_GPUs> in the cc_config.xml file survived the transition? :-) Gruß, Gundolf ____________ Computer sind nicht alles im Leben. (Kleiner Scherz)  SETI@home classic workunits 3,758 SETI@home classic CPU time 66,520 hours | |
| ID: 981684 · | |
With 2 cards I plugged a second monitor in and did a restart and was able to disconnect 2nd monitor and didn't need it again. May give that a try if you have one to try. Once I put 3 in I needed dummy plugs or Boinc only sees 2 cards. Same problem on my XP64 host, plugged in a second (GTS250) nVidia card, a 9800GTX+, is already on the system, BOINC 6.10.17. does see the 'newer'G92 (GTS250) and uses it, but doesn't use the 9800GTX, anymore. Plugged in a monitor and extended the desktop, which did the job. Unplugged the monitor, but first, had to add a cc_config.xml, with <use_all_GPUs>1</use_all_GPUs> as option. And some log_flags. Now it (sometimes) run's 4 CPU CPDN WU's and 2 (0.04-0.24)CPU+GPU GPU-Grid or SETI or Einstein !? It made me wander why, it does run, these 2 (Not New) Projects, regardless of BOINC and WEB/Account, resource share! Has to be a debt-issue, cause I crunched both projects before. CPDN & GPUGrid. Received a load (~700) WU's from SETI, but they're still waiting to run. Nicely devided on 3 Quadies. Of which, 1 is 'stuck' with 100 (!) Docking WU's, 4 running and 96 pausing. The other mentioned above, 1, actually runs SETI and Collatz C. and always reaches it's limit of 150WU's a day, after 6 hours, so enough time left for SETI- WU's. ____________  Knight Who Says Ni N!, OUT numbered................. | |
| ID: 982078 · | |
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How odd. I did as Dave suggests above and plugged in a second monitor and voila up came the second GTX 285. So, being a curious fellow I unplugged it and rebooted. Up comes both GTXs again, as they once did. | |
| ID: 982343 · | |
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It depends on what is left in the registry. After a simple reboot there is still enough left there in the registry to use both GPU's, but after something like a driver update the registry probably gets cleared of cruft relating to the old driver and you have to do it again. | |
| ID: 982354 · | |
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let me know if this worked for you I'm running 2 ge force 8400 but boinc is only showing 1. | |
| ID: 982675 · | |
let me know if this worked for you I'm running 2 ge force 8400 but boinc is only showing 1. It did, he already posted to say: How odd. I did as Dave suggests above and plugged in a second monitor and voila up came the second GTX 285. So, being a curious fellow I unplugged it and rebooted. Up comes both GTXs again, as they once did. ____________  | |
| ID: 982696 · | |
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That did for me, too... | |
| ID: 982834 · | |
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Hmmm... one for two. My laptop now suddenly decided to drop one of its two Nvidia cards. Device Manager says everything is there and working properly. | |
| ID: 982843 · | |
Hmmm... one for two. My laptop now suddenly decided to drop one of its two Nvidia cards. Device Manager says everything is there and working properly. When you attached the external monitor, did you extend the desktop (in the Nvidia control panel) across the 2 desktops? F. ____________  | |
| ID: 982847 · | |
Device Manager says everything is there and working properly. I've seen Device Manager say the same about a blown audio card... but it really wouldn't work. Windows would find it, install its own drivers (the drivers from the manufacturer refused to install -> clue), it would get an interrupt and a memory address, but giving sound? Nuhuh. ;-) Same with two network Interface Cards. So I wouldn't take everything Device Manager says for truth. :-) ____________ Jord - BOINC FAQ Service - BOINC User Wiki Real is just a matter of perception. | |
| ID: 982852 · | |
Hmmm... one for two. My laptop now suddenly decided to drop one of its two Nvidia cards. Device Manager says everything is there and working properly. I have fixed, built, and tuned computers for years, and it is strange to say that for a hobby of solving math problems very fast, it is actually necessary to back-date a driver, and use on older OS. When I return a computer to someone, it has every driver, patch, and required software installed. The drive is defragged, and all virus, spyware, updates, and defrag happen every Thursday night into Friday morning. It is just interesting that to get maximum performance, you need to use older software revisions. ____________ Warning, addicted to SETI crunching! Crunching as a member of GPU Users Group. GPUUG Website | |
| ID: 982855 · | |
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Sorry for the double post. It seemed like it didn't go through the first time, so I pushed the button again. | |
| ID: 982859 · | |
Sorry for the double post. It seemed like it didn't go through the first time, so I pushed the button again. You should still be able to edit the duplicate to replace the text there with the apology? F. ____________ | |
| ID: 982864 · | |
I did. Even opened Explorer on the external monitor just to give it some exercise. Nada. I've pushed back the driver now as well. Also nada. There goes that theory. Regards, ____________ | |
| ID: 982898 · | |
Sage advice. Once you are on Windows, everything is relative. Regards, ____________ | |
| ID: 982901 · | |
It is just interesting that to get maximum performance, you need to use older software revisions. Only somewhat. I deal more with business apps personally but in that arena you are always working with a collection of sometimes competing requirements. Speed on a driver is paramount but I can see some code jockey doing a trade-off between uber speed and fixing some other thing that needs gobs of cycles. In a sense he sees it as "his" cycles to be applied to the greater "problem" since it looms bigger in his radar for fixing. We on the other hand look at the "problem" and shrug (probably something for some board manufacturer or bios that we couldn't give a rat's ass about) and go with the older driver because it doesn't reflect the compromise. Regards ____________ | |
| ID: 982905 · | |
Message boards : Number crunching : BOINC Not Using Both GPUs
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