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Author Topic: Disable Core for GPU  (Read 6098 times)

olihar

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Disable Core for GPU
« on: March 12, 2012, 01:35:55 AM »
I have been wondering if you have a CPU with hyper threading do you disable 1 or 2 cores in Photoscan, due to Hyper threading being virtual core.

So for example if you have the i7 3930K it has 6+6 "cores" thats how Photoscan sees it.

I got a GTX 580 and I was wondering if I should disable 1 or 2 cores in Photoscan. Is there a thread enough to feed the GPU or does it need the whole real core for itself.

Wishgranter

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Re: Disable Core for GPU
« Reply #1 on: March 12, 2012, 03:19:33 AM »
Have tried - must disable 2 cores......
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Alexey Pasumansky

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Re: Disable Core for GPU
« Reply #2 on: March 13, 2012, 01:26:56 PM »
Hello olihar,

I think optimal decision should be based on several experiments, since it could even depend on the processor type.
Disabling one CPU core for each GPU is a recommended value, but in some cases disabling two cores may give optimal performance.
« Last Edit: March 14, 2012, 08:16:52 AM by Alexey Pasumansky »
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Alexey Pasumansky,
Agisoft LLC