The SAD (sum of absolute difference) are usually used in video encoder motion estimation, and it occuppiesabout 40% ormore cycles in video encoder. BUT according toThreadedFunctionsList.txt, it's not multi-threads supported!!!This is reallyunbelievable. However, I found many intell IPP articles mentions the multi-threads ipp usage for video encode. i.e. http://software.intel.com/en-us/articles/threading-and-intel-integrated-performance-primitives/ Especially, the following articles give an examples to use ippiSAD4x4_8u32sin multi-threads speed up. http://software.intel.com/zh-cn/articles/32027/ So, I try to open multi-threads configure for the ippiSAD* function viaippSetNumThreads. But it doesnot work. Who can exactly tell me if the ippiSAD* function are multi-threads supports? If not, can it be multi-threads with other tools, e.g. OpenMP? and how to? Thank you in advance.
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