MKL FFTW interface performance

meneses__esteban — Mon, 31 Mar 2014 15:45:47 GMT

Hi,

I am trying to reproduce the results of the MKL FFTW interface in this report:

https://software.intel.com/sites/default/files/article/165868/intel-mkl-fft-training-ppt-v11.pdf

Does anybody know where I can get the source code used in that report?

So far, I have been running the source code in this webpage:

http://numbercrunch.de/blog/2010/03/parallel-fft-performance/comment-page-1/

but the MKL FFTW interface shows really poor performance. I wonder if there is something I am missing.

Thanks.

Esteban,

Dmitry_B_Intel — Tue, 01 Apr 2014 12:18:59 GMT

Esteban,

The MKL performance charts show the performance of other FFT problems than that measured by the benchmark code from Heiko's page.
In particular, the MKL charts show performance of a single transform, while the benchmark runs FFTs of 2 or 4 interwoven data sets. Genuine FFTW is good at such layouts.

A good starting place for benchmarking FFTs is http://www.fftw.org/benchfft/.

Thanks
Dima

topic MKL FFTW interface performance in Intel® oneAPI Math Kernel Library

MKL FFTW interface performance

Esteban,