Opitmization with TBB [closed]

asked 2013-01-21 04:03:32 -0600

Rogeeeer
194 ●1 ●7

updated 2013-01-21 04:04:35 -0600

Hi,

I have to write a real-time AR application for an internship. So I have to deal with commercial use of the libraries. I don't really know if TBB is useful because I have a Xeon + Nvidia Quadro.

I was wondering about how TBB works : I saw that optimizations are already implemented in OpenCV and including TBB when I build with Cmake will allow these optimizations to be used.

So if I write my application without TBB and do some benchmarks with the 30days evaluation later, will I see some improvements ? I think that it's to simple to work...

If I recompile OpenCV with TBB support later, will I have to recompile everything ? Because CUDA support is quite long.

Thanks !

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Closed for the following reason not a real question by sammy
close date 2013-02-04 02:09:40.714006

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This is not a real question. Please rewrite it, and state clearly what's your programing, OpenCV-related issue. All your questions above can be answered by yourself, with a bit of work.

sammy ( 2013-01-21 08:39:43 -0600 )edit

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answered 2013-02-03 11:05:13 -0600

mgb
311 ●2 ●10

You don't need the 30day evaluation TBB it is available as GPL

TBB essentially allows you to call the same function in parallel on each cpu core/hyperthread. It's useful when you have a function that does the same thing to different data, doesn't depend on the output of other calls of itself and can be split into 4/8/16 blocks.

CUDA (since you have an NVIdia card) runs instructions on the GPU, it can process 100-1000 tasks in parallel but it takes time to get the data onto and off the card - so is useful when you want to process an entire image and have functions that operate only on a local section of the image.

Yes the cuda build of opencv takes along time because CUDA pre-builds the GPU code for different cards ahead of time.

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Opitmization with TBB [closed]

Closed for the following reason not a real question by sammy
close date 2013-02-04 02:09:40.714006

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Opitmization with TBB [closed] edit

Closed for the following reason not a real question by sammy close date 2013-02-04 02:09:40.714006

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1 answer

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Opitmization with TBB [closed]

Closed for the following reason not a real question by sammy
close date 2013-02-04 02:09:40.714006