[SciPy-User] EPD and fast FFT?

Dag Sverre Seljebotn dagss@student.matnat.uio...
Mon Mar 22 04:02:57 CDT 2010


Joseph Anderson wrote:
> Hello All,
>
> Anyone have any hints on speeding up the FFTs on EPD?
>
> I've just started to do some larger 1-d convolutions, and am finding the crunching to be somewhat slow for my data sets (Room Impulse Responses * Audio Files).
>
> I don't seem to think the EPD installation comes set up with FFTW... and, my first thought is that's what's needed to speed things up.
>
> Any advice?
>   
The latest EPD comes with Intel MKL; so that's likely what you want to 
use. It uses the FFTW 3 API, so any code you write would be usable with 
either MKL (costs money) or FFTW (GPL).

Personally I'd use Cython to start wrap the FFTW 3 API... at least if 
you know some C that shouldn't take long.

Dag Sverre


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