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World Community Grid Forums
Category: Support
Forum: GPU Support Forum
Thread: Dear techs: |
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Thread Status: Active Total posts in this thread: 24
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pirogue
Veteran Cruncher USA Joined: Dec 8, 2008 Post Count: 685 Status: Offline Project Badges: 
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Is it possible to check why a certain device (1817515) is getting so many WUs marked as Invalid?
----------------------------------------I've got identical GPUs running on separate PCs with the same driver, CPU, and OS. One of them (1817515) is generating Invalids at what seems to be an abnormal rate. The only difference I can see is that the one with no invalids is a dedicated cruncher. I've tried running overclocked, underclocked, and stock, and still get invalids. Based upon the details, there is no way to tell why the WUs are getting marked as invalid. Is there any way and/or willingness to tell from behind the scenes? |
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7846 Status: Offline Project Badges: 
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Try swapping the gpu's. If the invalids follow the card, that will be a clue there is a problem with the card. If the invalids stay with the machine it narrows down the places to look for the problem. Hope this helps.
----------------------------------------Cheers
Sgt. Joe
*Minnesota Crunchers* |
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nanoprobe
Master Cruncher Classified Joined: Aug 29, 2008 Post Count: 2998 Status: Offline Project Badges: 
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Is it possible to check why a certain device (1817515) is getting so many WUs marked as Invalid? I've got identical GPUs running on separate PCs with the same driver, CPU, and OS. One of them (1817515) is generating Invalids at what seems to be an abnormal rate. The only difference I can see is that the one with no invalids is a dedicated cruncher. I've tried running overclocked, underclocked, and stock, and still get invalids. Based upon the details, there is no way to tell why the WUs are getting marked as invalid. Is there any way and/or willingness to tell from behind the scenes? Mobo memory might be the first place to look. Might be time for a memtest
In 1969 I took an oath to defend and protect the U S Constitution against all enemies, both foreign and Domestic. There was no expiration date.
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Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges:
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You also mention the device having invalids is the device that isn't a dedicated 24/7 cruncher. How is this system being used and how often? Do you see anything like a driver reset? Are you using a screen saver? Do you have the system set to turn off the display when idle? Do you have Aero turned on or off? All of these things can and do have effects on some machines and projects. Knowing this behavior and what card you have will benefit the trouble shooters and future readers having similar problems.
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pirogue
Veteran Cruncher USA Joined: Dec 8, 2008 Post Count: 685 Status: Offline Project Badges:
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I was kind of hoping there was some flag buried deep in the results file that would give some indication.
----------------------------------------Memtest ran with no errors. I don't use a screensaver and the monitor is set for always on. I use the power button. It's used for checking email and browsing forums. The driver reset hasn't happened since I installed the 12.11 beta driver. I just disabled aero. I'll see if it makes a difference. I really don't want to be swapping cards in and out. [Edit 1 times, last edit by pirogue at Oct 29, 2012 4:04:23 PM] |
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mmstick
Senior Cruncher Joined: Aug 19, 2010 Post Count: 151 Status: Offline Project Badges: 
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Causes:
----------------------------------------* Corrupted OpenCL driver * Corrupted Display driver * Unstable VRAM (decrease GPU memory frequency) * Unstable Core frequency (increase core voltage/decrease core frequency) * Unstable CPU/RAM (Prime95 stress test) * Not all GPUs are created equal, it's even possible the GPU isn't stable on stock frequency. [Edit 2 times, last edit by mmstick at Oct 29, 2012 8:48:37 PM] |
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pirogue
Veteran Cruncher USA Joined: Dec 8, 2008 Post Count: 685 Status: Offline Project Badges:
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No invalids for 7 hours.
---------------------------------------- I'm even running at 1125 MHz core.  |
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nanoprobe
Master Cruncher Classified Joined: Aug 29, 2008 Post Count: 2998 Status: Offline Project Badges:
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No invalids for 7 hours. I'm even running at 1125 MHz core. 7970? PM me at XS when you get the chance.
In 1969 I took an oath to defend and protect the U S Constitution against all enemies, both foreign and Domestic. There was no expiration date.
----------------------------------------[Edit 1 times, last edit by nanoprobe at Oct 29, 2012 10:34:26 PM] |
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Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges:
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Was it disabline Aero? Let us know your final results so others can try it.
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pirogue
Veteran Cruncher USA Joined: Dec 8, 2008 Post Count: 685 Status: Offline Project Badges:
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Was it disabline Aero? Let us know your final results so others can try it. I don't know for a fact that is was disabling aero. It probably didn't hurt. I'm just glad I haven't had an invalid since I did it. |
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