topic Hi Fiona! in Intel® oneAPI Math Kernel Library

Intel Dfti equivalent to FFTW "fftw_plan_many_dft"

David_Sall — Mon, 06 Mar 2017 19:01:43 GMT

I am using the Intel Fortran compiler for Windows, Composer XE 2013 SP1. I am trying to convert my FORTRAN code to use the MKL FFT's, i.e., Dfti library. I could not find any reference or examples on the FFTW plan, "fftw_plan_many_dft". Can this be done using the Intel FFT's? Would it be possible for someone to show me the syntax of how this is done or point me to a reference where it is done?

Thank you very much for your help!

Sincerely,

David

Dear customer,

Zhen_Z_Intel — Tue, 07 Mar 2017 07:54:18 GMT

Dear customer,

The MKL provide FFTW3 wrapper API for both C and Fortran, you could refer to this document to use FFTW with MKL. And you could also find example for "dfftw_plan_many_dft" both forward and backwork from $MKLROOT/examples/examples_core_f/fftw3xf/source, hope it would be helpful to you.

Best regards,
Fiona

Hi Fiona!

David_Sall — Wed, 08 Mar 2017 12:20:48 GMT

Hi Fiona!

Thank you very much for your help. Super easy change to my code!

Sincerely,

David