topic Thank you for the reply, for in Intel® oneAPI Math Kernel Library

FFT Speed up Generation

MooN_K_ — Wed, 28 Aug 2013 21:19:30 GMT

Hey there

I d like to use the MKL library to generate the 1D FFT(complex to complex), with the size of 256.

To speed up the process i want to split the 256 FFT vector to 4 sub-vectors of 64 and run each on 1 thread (i have 4 threads on my processor).

How with the help of OMP library i can get all the sub-vectors executed simultaneously in the parallel mode? Any help or programming details will be apperciated.

Thanks

Please take a look at a

SergeyKostrov — Thu, 29 Aug 2013 00:17:57 GMT

Please take a look at a thread http://software.intel.com/en-us/forums/topic/402439 for more technical details on how to use MKL's DFTI functions. Then, a source data set of 256 elements is too small and I think in the end an overhead of 4-thread processing won't give you any performance gains. However, it will be a great academic experience for you on how to do some processing in parallel. Regarding OpenMP programming take a look at http://openmp.org/wp. Resources web-page has a link to Tutorials and Articles.

Thank you for the reply, for

MooN_K_ — Wed, 02 Oct 2013 06:30:00 GMT

Thank you for the reply