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Message boards : Graphics cards (GPUs) : half a GTX295

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Temujin
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Message 12231 - Posted: 31 Aug 2009 | 9:55:32 UTC

Is there any way I can tell boinc to only use 1 core of my GTX295?

My gtx295 runs under linux and since the recent compute capability upgrade device #1 fails every WU while device #0 works fine. I've tried all available drivers (185.18.14, 185.18.31 & 190.18) but they all fail on device #1

I've been babysitting it recently, suspending all but 1 WU and although that works fine but I'd prefer boinc to do it itself.

So, untill there's a driver that works for my setup, does anyone know if there's some method of telling boinc to only use cuda device #0 ?

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Message 12239 - Posted: 31 Aug 2009 | 20:39:07 UTC - in response to Message 12231.

No.. because that would lead to micro management *duck*

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Message 12244 - Posted: 31 Aug 2009 | 23:38:09 UTC - in response to Message 12231.

Is there any way I can tell boinc to only use 1 core of my GTX295?

My gtx295 runs under linux and since the recent compute capability upgrade device #1 fails every WU while device #0 works fine. I've tried all available drivers (185.18.14, 185.18.31 & 190.18) but they all fail on device #1

I've been babysitting it recently, suspending all but 1 WU and although that works fine but I'd prefer boinc to do it itself.

So, untill there's a driver that works for my setup, does anyone know if there's some method of telling boinc to only use cuda device #0 ?


You can do this if you tell BOINC to use 50% of your processors. I do this with my i7 - at any time it uses four threads and one GPU.

Try it out...

R

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Temujin
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Message 12247 - Posted: 1 Sep 2009 | 8:30:05 UTC - in response to Message 12244.

So, untill there's a driver that works for my setup, does anyone know if there's some method of telling boinc to only use cuda device #0 ?
You can do this if you tell BOINC to use 50% of your processors. I do this with my i7 - at any time it uses four threads and one GPU.

thanks R

I gave this a quick try this morning, c2q and gtx295 and it cut the CPU down to 2 WUs but still allowed 2 GPU WUs (the 2nd of which promptly failed).

I'll have a play with different %'s tonight


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Message 12337 - Posted: 3 Sep 2009 | 21:34:54 UTC - in response to Message 12247.

I'll have a play with different %'s tonight


You must not use any value higher than 50%.

MrS
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Message 12349 - Posted: 3 Sep 2009 | 22:22:41 UTC - in response to Message 12337.

I'll have a play with different %'s tonight

You must not use any value higher than 50%.
MrS

I had a play with this, with 49% 1 got 1 CPU WU but still 2 GPU WUs
24% didn't cause a benchmark and had no effect.

I've gone back to 75% and use a script at 4am to suspend the current WU and resume a fresh one

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Message 12353 - Posted: 4 Sep 2009 | 0:29:48 UTC - in response to Message 12349.

theirs no option in boinc yet as to limit or %'s of gpu. hopefully in 6.10 that will change.
or v7.

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Message 12517 - Posted: 15 Sep 2009 | 20:18:24 UTC

I'm not sure what I've done, I've tried no end of things but my GTX295 is now running successfully both on cores.

Some of the last things I tried were setting ownership on /dev/nvidia[01] to the same as boinc and upgrading the nvidia drivers to 190.32. If I were to hazzard a guess, I'd say it was changing ownership that did the trick.

Now I've just got to get gpu #1 to run all full speed. It's stuck at performance level 0 (300MHz GPU & 100MHz memory) whereas gpu #0 is at level 2 (576MHz & 999MHz).
nvidia-settings just flatly refuses to adjust it and nvclock complains Coolbits isn't set even though it is :?

At least I don't have to babysit it any more :)

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Message boards : Graphics cards (GPUs) : half a GTX295

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