On Tue, Oct 28, 2014 at 1:32 AM, Jerome Kieffer <Jerome.Kieffer@esrf.fr> wrote:

On Tue, 28 Oct 2014 04:28:37 +0000
Nathaniel Smith <njs@pobox.com> wrote:

> It's definitely attractive. Some potential issues that might need dealing
> with, based on a quick skim:

In my tests, numpy's FFTPACK isn't that bad considering
* (virtually) no extra overhead for installation
* (virtually) no plan creation time
* not that slower for each transformation

Because the plan creation was taking ages with FFTw, numpy's FFTPACK was often faster (overall)

Cheers,

Ondrej says that f90 fftpack (his mod) runs faster than fftw. The main thing missing from fftpack is the handling of transform sizes that are not products of 2,3,4,5.

Chuck