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Help required! Cuda on new system crashes!
Richard Haselgrove:
--- Quote from: Gizbar on 30 Oct 2009, 04:45:58 pm ---
I have:- Asus M4A79T deluxe, 4Gb corsair DDR3 ram, AMD955 clocked up to 3.6Ghz at stock voltage, and a 9800GTX+ on Win7-64 bit release candidate, with Lunatics v0.1.
I installed a new GTX260 (a Gigabyte super overclock 896Mb, running at 680Mhz core, 1500Mhz shaders, and 2500Mhz ram).
regards, Gizbar.
--- End quote ---
You don't mention your power supply. Your new GPU will draw significantly more power than the old one - could that be the problem?
Gizbar:
Hi Richard, thanks for the reply.
I don't think so. I have a Corsair 620w power supply, and I've used a power supply guide at http://extreme.outervision.com/psucalculatorlite.jsp which is telling me I should be drawing no more than about 80% of it's rating.
I've done some more testing today with 3dmark06 and used GPU-Z to log the temperatures too. It hasn't crashed once and hasn't been over 74c. While running the Cuda app, the temperature was averaging 72c, which I don't think is too excessive for the GTX260 IIRC. CPU on it's own is running fine, ran 4 instances of Prime95 to test it, never got above 51-52c.
It only seems to have a problem switching from one Cuda wu to the next, AFAICT. This leaves the wu partially done, as the crash makes it go back to the last save point in the wu, which could be as little as 3%. That doesn't bother me in itself, but it does bother me that it doesn't restart that wu, and goes onto another instead. I now have several sitting like this.
I just don't know why. I'll get a new PSU if I have to, but nothing else seems to be failing, and I thought that running the benchmark at top quality for an hour or more would stress the component just as much. Maybe it's because they're all running together? I'll try that now. My other system only has a 500w OCZ power supply in it, and is running flawlessly with the 9800GTX+ in it.
regards, Gizbar.
efmer (fred):
Another thing you should check. If the motherboard can handle the current of your card from the bus. This is also an significant amount of current.
I have a board that crashed while starting a WU but sometimes it ran for a day or so.
The power supply was large enough, but the regulator on the board was not up to the task.
Gizbar:
Thanks Fred. Not sure how to check that one out, but the board is only a few months old and Asus make a big thing about the no. of phases they have and the stable supply to everything on it. There are no other cards running on any bus apart from that one. I'm going to do a few more tests with 3dmark vantage and then possibly try the non-vlarkill version of the cuda app, to see if that makes a difference. I've not had to sort a problem like this before with Seti, normally any problems are my own doing, and I've had to pay the price for doing it, and get help sorting it out, normally from the Seti boards.
regards, Gizbar.
efmer (fred):
You only tried this on Win 7 X64? I don't think the drivers are quite finished. I still wait for a driver that runs my 2 GTX 295 without crashing all the CUDA tasks. And making my system feel like a 386 systems from way way back.
The same system works just fine on XP 64.
And you may have a defective card, I had more than 100% defects.. ;D before I got some stable cards.
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