3 ms·
Probably a massive difference. The generic X86 IPP implementation of 1 dimensional FFT is around 8x faster than the naive FFT variants I've tried. Intel also cl
by alfalfasprout 10y ago
Probably a massive difference. The generic X86 IPP implementation of 1 dimensional FFT is around 8x faster than the naive FFT variants I've tried. Intel also claims an effective 5.5x improvement over that when targeting AVX2 (so Haswell and later). Essentially, a 40x is not unusual.
When it comes to insanely optimized code, most of Intel's libraries (MKL, VSL, IPP, DAAL) are hard to beat.