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Performance comparison between Intel TBB task_list, openMP task and parallel for

I am planning on parallelizing a hotspot in a project. And I would like to know your opinion between the performance evaluation between parallel for, omp single followed by task and intel TBB task_list, under ideal conditions where number of threads are equal to computation items and when computation are much greater than available threads to see scheduling overhead(in order to evaluate the most efficient scheduler). I will also, be writing some sample test programs to evaluate myself but I also wanted to know if anybody had previously made these evaluations.

Thanks in advance.

Further information about different barrier algorithms

Hi!

I'm researching on barrier algorithms using SIMD instructions and I'm trying to deeply understand the different versions included in the RTL.

I've noticed that there is a new barrier algorithm (hierarchical) since the last time I had a look.

Where could I find a further description of them? Could someone from Intel provides me with further information?

 

Thank you in advance.

Kind regards.

Analyzing Intel® SDE's TSX-related log data for capacity aborts

Starting with version 7.12.0, Intel® SDE has Intel® TSX-related instruction and memory access logging features which can be useful for debugging Intel® TSX's capacity aborts. With the log data from the Intel SDE you can diagnose cache set population to determine if there is non-uniform cache set usage causing capacity overflows. A refined log data may be used to further diagnose the source of the aborts.

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