Hi all,

I can't seem to run GPUGrid WUs without my Nvidia driver causing a BSOD within 30 minutes or so. This is with my PC just siting otherwise idle on the desktop. I've checked my temperatures and even tried maxing out all the GPU Fans in Rivatuner, and the GPUs are no running very hot(~60C under load).

Any ideas on what else might be causing this?

My Setup:

Q6600
8GB DDR2
2x GTX 260(SLI)
1x 8800GT
Vista 64 Ultimate
Nvidia Forceware 182.06
Boinc 6.6.20

have you tested the newer 182.50 Nvidia driver?

And is SLI turned OFF?

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I haven't tried disabling SLI yet, is it explicitly not supported?

SLI will officially prevent BOINC from seeing more than one GPU. If you want all of your video card cores to being processing BOINC tasks, SLI must be disabled.

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Ok, I have disabled SLI, but am still having problems:

- I can run CUDA WUs on Seti@home without any issues if GPUGRID is suspended.
- Running GPUGRID (with or without SETI running) causes a Nvidia driver BSOD within 30 minutes or so.

Just a theory, but i assume your power supply unit is upto the job? It maybe that trying to feed 3 GPU's at the same time could be having an inpact? With that type of configuration i would have thought a 800W+ would be needed?

Please install the newest driver from Nvidia, disable the Muli-GPU-Mode and reboot. Now try again. If there are still errors, try only one GC, perhaps one has an error. Maybe is ok for the short Seti WUs, but for GPU Grid...

Just a theory, but i assume your power supply unit is upto the job? It maybe that trying to feed 3 GPU's at the same time could be having an inpact? With that type of configuration i would have thought a 800W+ would be needed?

It's a 750watt Silverstone Zeus unit.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817256006

I'll try the newer Forceware driver when I get a chance. Are there any other benchmarks or stress tests that I can use that will load all my GPUs at once?

Alternately, is there any way to limit which GPU(s) GPUGRID can run WUs on?

Alternately, is there any way to limit which GPU(s) GPUGRID can run WUs on?

Not yet.

Regarding benchmarks: running a recent 3D Mark on the 2 GTX 260's, possibly at a higher resolution than the default, should result in a load higher than GPU-Grid on all 3 cards. Furmark is the choice if you want to maximize heat & power draw.. not sure how it handles multiple cards, though.

Distribution of the power over the different rails may also be an issue, which might not be caught by running 3D Mark on 2 GPUs in SLI. How did you connect your GPU power plugs?

MrS

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Scanning for our furry friends since Jan 2002

The PSU is quad rail , and has a pair of dual-headed PCI-E power plugs that I am using for the GTX 260s. I am using a dual 4-pin molex --> PCI-E power adapter for the 8800GT. I'd have to check if anything is on the same rail as the latter adapter.

Yeah I'd definatly say FurMark it's a beast.

I get a BSOD while playing Supreme Commander for some time and having GPUGRID running in the background :-(
I have Win XP 32bit and a GTX 285 with the latest drivers from nvidia!

You should stop GPUGrid before playing games -- you can run into memory issues because the game and GPUGrid are using up all the vidmem. You can do this manually every time or use an option in the cc_config file. Search the forums and you will find it, probably fairly recent.

I am using a dual 4-pin molex --> PCI-E power adapter for the 8800GT

Power distribution seems fine. The only possible weak spot which I can find is the quote above. It could be that the 8800GT draws just enough power to overload a certain rail if you're running GPU-Grid, whereas under seti the overall GPU power draw is lower and therefore the problem doesn't cause a BSOD.

I'd take the 8800GT out and test if GPU-Grid runs. Otherwise I'd start wildly swapping cards in and out in a somewhat organized manner, which would likely lead to seemingly random errors. I'd forget to write these down properly and at the end of the day still wouldn't know what caused the error, but the 3 card config would likely work.

MrS

(just kidding.. well, I hope)

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Scanning for our furry friends since Jan 2002

I am using a dual 4-pin molex --> PCI-E power adapter for the 8800GT.

IN every GPU Box they had this little adapter ... and a note that said use it only temporarily as it is not a recommended configuration. I think you are seeing an example of why this is not recommended and is only suitable as a temporary stop-gap.

I don't think it's that bad. I used one for my 9800GTX+ (quite thirsty) without problems. I connected both 4 pin Molex to different "cable threads", don't know if it made a difference.

MrS

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Scanning for our furry friends since Jan 2002

Im also getting BSOD on my Dual GTX 295's setup. Ive narrowed it down a little myself and it usually (but wont always) happens when i restart a suspended WU.
Im thinking i have a bad second graphics card but its stable for days sometimes or that firing up both 295's at once makes the PSU have a heart attack because of the sudden power draw. Not sure though and testing takes time.
I generally suspend GPUGrid when im playing games and need to use Quad SLI mode. Once im finished the game i disable SLI (if i used it, some games run perfect on one GPU) and un-suspend....then it BSOD's.

arghh had a crash on my vc driver after windows update ...
lost the 9 hours+ unit and it downloaded again after i rebooted and fixed the videocard error :(
grrr why oh why