how I can crunch a lot of WU in, for example in gtx 560?
11 Dec 2011 16:39:55 UTC
Topic 196097
(moderation:
This is my question:
how I can crunch a lot of WU in for example gtx 560?
In a very good GPU with a lot of cores CUDA, can i crunch a lot of WU for GPU or only one?
In the future, i will buy a new computer with a great GPU and CPU, and i´m really interesting in process many WU...
how I can crunch a lot of WU in, for example in gtx 560?
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Yes you can crunch several work units at once depending on the GPU and how much GPU memory is available. Each work unit requires 300-350 MB of memory. A 1GB GTX 560 can run two at once and possibly more with a 2GB version of this card. You need an app_info.xml file to run more than one work unit per GPU.
Thnaks Jeroen, I ask you in
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Thnaks Jeroen, I ask you in the future when I will buy a nw computer...
Please accept my invitation for be friends and we can talk abaut hardware and more
RE: Thnaks Jeroen, I ask
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Accepted. :)
RE: Yes you can crunch
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i run 3 BRP4 tasks on the GPU simultaneously, and my GTX 560 Ti is only the 1GB version. and yes, i have confirmed that running 3 tasks at a time is more efficient than running 2 at a time (specifically, 2 tasks run ~24% more efficiently than 1 task, and 3 tasks run ~8% more efficiently than 2 tasks, so 3 tasks run ~30% more efficiently than 1 task). GPU load averages out to ~85% while VRAM usage averages out to ~775MB, and spikes as high as ~820MB once every few minutes. of course this means that there isn't enough VRAM to run 4 simultaneous tasks on a 1GB card - each task would have to consume no more than 256MB of VRAM in order for that to work. i suspect running 4 simultaneous tasks on the 2GB version would be possible since my GPU seemed to have some headroom while crunching 3 tasks. but despite the 2GB card having enough VRAM to run 6 tasks simultaneously, i think the GPU load would be maxed out at 4 tasks.
I'm running 6 WUs
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I'm running 6 WUs samulteniously on 560Ti with 2Gb. Probably can run 7 WUs but leave some memory for operation system to show me the progress.
RE: I'm running 6 WUs
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but have you experimented to see if running 6 simultaneous tasks is actually more efficient than running 5 or 4?
RE: RE: I'm running 6 WUs
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Yes, it is more efficient. Can't say much more efficient but I can see the difference.
You can see the discussion in :
http://einsteinathome.org/node/195666&nowrap=true#110720