I have the problem with FFT (IPP ver 7.0), ippsFFTFwd_CToC_32fc. The FFT len 2^19. According to ThreadedFunctionsList.txt, "ippsFFTFwd_CToC_32fc" is threaded.
I run it on 12 cores machine (L5640 2x6),through Parallel Studio, Visual Studio 2010 under Windows Server 2008, 64bit.
And see that only one core is working. And I did all that wroted in doc.
For instance, Direct FIR function is very good parallelized.
Can you help me with FFT ?