Open kozross opened 6 years ago
I would just create some pseudo signal that of size 2^N and a pseudo signal of size that is not a power of 2. And run some comparison test on local machine thousands of times and compare the results. It would be great if you could help. That's a very generous offer. :)
@adis300 I can do that, but I know pretty much nothing about DSP, which means I don't even know how to generate a pseudo-signal! Additionally, if there's some existing benchmark or test for this kinda thing, it'd probably be better and more convincing. Can you suggest anything?
In this project, the example shows how to generate a pseudo sine wave and applied FFT. I think this gentlemen provided some benchmark in his README file (https://bitbucket.org/jpommier/pffft). You can take a look at the FFTPACK vs FFTW performance comparison. The work I did is just repackaging Dr. Monty's work from 1997 that translates 1d transform from fortran to C, making it very easy to use for all developers.
I'd like to see some. I'd be happy to run them myself, but as I have no idea how FFT performance is evaluated, I'd love some help finding a suitable test.