parallel_for_

opencv
c++

asked 2017-11-06 05:27:12 -0600

Dear all how to compile opencv code when we use parallel_for_ inside the code i need to add some options in g++ ? for example g++ - pthread ? it is not clear for me thanks per advence

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answered 2017-11-06 07:26:49 -0600

kbarni

4134 ●1 ●13 ●49

If you want to use OpenCV's parallel_for_, you don't need to add anything at compile time, but you need OpenCV compiled with WITH_TBB flag and have libtbb2 installed.

I find a lot easier to use the parallel_for directly from the tbb2 library. In this case toy need to add -ltbb to the g++ arguments.

See this answer about using TBB's parallel_for.

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parallel_for_ is a wrapper not only for TBB. It also works with OpenMP, pthreads (Linux), Concurrency and WINRT (Windows),, GCD (Apple) and CStripes.