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Torch not fully utilizing CPU #65

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czhang96 opened this issue Jun 23, 2016 · 3 comments
Closed

Torch not fully utilizing CPU #65

czhang96 opened this issue Jun 23, 2016 · 3 comments

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@czhang96
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Built torch-android without CUDA, CPU only.

In android-demo, do not make any tensors cuda

Running the android-demo, android studio monitor shows only ~ 25% CPU usage. Any reason why it's not 100 (as it is when trying similar caffe-android ports)? I tried torch.setnumthreads(4), but it doesn't seem to have done anything.

Why is this happening?
@arbuzz
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arbuzz commented Aug 4, 2016

Experiencing the same

@ExenVitor
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It's the same problem with #68. You can try to compile OpenBlas.

@borisfom
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Torch itself using a single thread, so unless your program utilizes parallel OpenBLas etc. if would only use a single core.

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@arbuzz @ExenVitor @czhang96 @borisfom