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Losing work done when stopping GPU computations.

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narrowboat

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Message 45627 - Posted: 19 Jan 2011, 11:38:58 UTC

Hi there,
I wondered if anyone could help? I'm using my GPU to crunch Milkyway (when the computer has not been used for two minutes) and all is fine except when I start using it again the crunching stops as per instructions, but when it starts again any computation is lost and time elapsed and progress reverts to zero. I'm sure that in the past this wasn't the case or am I imagining that?
Have just replaced my GTX 295 with a GTX 580...wow!!!!
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Profile Paul D. Buck

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Message 45628 - Posted: 19 Jan 2011, 12:19:18 UTC - in response to Message 45627.  

Hi there,
I wondered if anyone could help? I'm using my GPU to crunch Milkyway (when the computer has not been used for two minutes) and all is fine except when I start using it again the crunching stops as per instructions, but when it starts again any computation is lost and time elapsed and progress reverts to zero. I'm sure that in the past this wasn't the case or am I imagining that?
Have just replaced my GTX 295 with a GTX 580...wow!!!!

Because of the short run times, minutes only, MW on the GPU does not checkpoint. So, yes, all the work done in lost. But, by not checkpointing, more work is actually done over the long haul because of the time saved avoiding wasteful disk writes...
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Message boards : Number crunching : Losing work done when stopping GPU computations.

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