IPP & MKT FFTs comparison?

[thomas_deschamps]

Hi all,

Does anybody know if there is a comparison of the FFT and FFTinv functions of the IPP and MKT libraries?
I would like to use FFT for 2D & 3D images.

Thanks,

Thomas

[Vladimir_Dudnik]

Hi,

You probably talk about MKL (Match Kernel Library)?

If so, it is the fact that MKL uses IPP FFT inside for small sizes andown FFT implementation for big sizes of matrixes.

Regards,
Vladimir

[thomas_deschamps]

Thanks for your reply.
Do you have an estimate of these small and big sizes?
I have several kind of images.
Some are 64^3, others are 512^3.
Thanks,

Thomas

> If so, it is the fact that MKL uses IPP FFT inside for
> small sizes and own FFT implementation for big sizes
> of matrixes.

[Vladimir_Dudnik]

Hi,

regarding IPP, you canfind performance numbers ofalmost allIPP functions in IPP oolsperfsys folder.

You can ask about performance of MKL on MKL's forum.

Regards,
Vladimir

Message Edited by vdudnik on 10-10-2005 09:51 AM