topic Re: function fft() sometimes fails to calculate result in Intel® oneAPI Math Kernel Library

function fft() sometimes fails to calculate result

ellocco — Mon, 12 Sep 2022 08:41:34 GMT

Dear Sir or Madam!

Please have a look at:

https://github.com/oneapi-src/oneMKL/issues/222#issuecomment-1231785743

Regards,

Stefan

Re:function fft() sometimes fails to calculate result

ShanmukhS_Intel — Wed, 14 Sep 2022 16:39:34 GMT

Hi Stefan,

Thank you for posting on Intel Communities.

We would like to request you kindly post your query details here so that it would be helpful for other users with a similar issue.

Best Regards,

Shanmukh.SS

Re: Re:function fft() sometimes fails to calculate result

ellocco — Thu, 15 Sep 2022 07:46:27 GMT

Hi Shanmukh,

thanks for your response all the details are given in the thread above.

It took me quite some time and a couple of e-mails to find this forum here.

Beside the link above you might also check:
JuliaMath/FFTW.jl#250
and
https://discourse.julialang.org/t/comparison-of-different-fft-implementations/86021/2

Problem:

At least with 47499754 points the function fft() fails.

Kindest regards,

Stefan

Re:function fft() sometimes fails to calculate result

ShanmukhS_Intel — Thu, 22 Sep 2022 17:59:44 GMT

Hi,

We are looking into the details in the links shared by you. In the meantime, it would be good if you could share with us a sample reproducer and steps(if any) so that we could guide you in getting the issue resolved.

Best Regards,

Shanmukh.SS

Re: function fft() sometimes fails to calculate result

ellocco — Fri, 23 Sep 2022 13:28:20 GMT

Hi Shanmukh!

Sample reproducing code is given in the links I posted here.

Best Regards,

Stefan

Re:function fft() sometimes fails to calculate result

ShanmukhS_Intel — Fri, 30 Sep 2022 16:37:32 GMT

Hi,

Could you please share let us know your oneAPI environment details?

Best Regards,

Shanmukh.SS

Re: Re:function fft() sometimes fails to calculate result

ellocco — Mon, 03 Oct 2022 07:12:33 GMT

Hi Shanmukh!

Thanks for your kind reply! Have you checked the links that I have provided?

To be honest, I do not know what is still unknown. Do you have a more specific question?

What do you mean by "oneAPI environment"?

Kind regards,

Stefan

Re: function fft() sometimes fails to calculate result

Hsbsh — Fri, 07 Oct 2022 19:06:19 GMT

Interesting that "If I use rfft() instead of fft() the fft-algorithm can handle 47499754 points, even if I turn on the MKL".

Re: function fft() sometimes fails to calculate result

ShanmukhS_Intel — Mon, 10 Oct 2022 17:25:20 GMT

Hi Ellocco,

Apologies for the delay in response. We have gone through the links shared. However, we are facing issues while running the code. Attached the screenshot for your reference.

Could you please let us know if any dependencies need to be installed? and we would like to request you share the steps in code execution, as it helps reproduce the issue and address the same.

Best regards,

Shanmukh.SS

Re: function fft() sometimes fails to calculate result

Hsbsh — Mon, 10 Oct 2022 21:43:53 GMT

https://www.google.com/search?q=plotlyjs

Re: function fft() sometimes fails to calculate result

ellocco — Tue, 11 Oct 2022 11:11:17 GMT

Dear Shanmukh,

using PlotlyJs

is a part of a Julia script.

If you do not want to plot you can skip the plot function.

Packages under Julia can be installed via Pkg.

Best regards,

Stefan

Re: function fft() sometimes fails to calculate result

ShanmukhS_Intel — Wed, 02 Nov 2022 07:07:27 GMT

Hi Stefan,

Thank you for sharing the details.

It took me a while in getting the dependencies installed and set up the environment to reproduce the issue. We are able to reproduce your issue at our end and we have informed the development team regarding the same.

Best Regards,

Shanmukh.SS

Re:function fft() sometimes fails to calculate result

ShanmukhS_Intel — Mon, 04 Dec 2023 19:34:15 GMT

Hi,

Thank you for your patience. The issue raised by you has been targeted to be fixed in version 2024.1 and will be released in the coming months. If the issue persists with the new release, please start a new discussion thread in the community forum and we’ll investigate it further. Please check the release notes for upcoming features and bug fixes.

Best Regards,

Shanmukh.SS