[Octave-bug-tracker] [bug #62317] AVX is missing for FFTW library

[Jinchuan Tang]

URL:
  <https://savannah.gnu.org/bugs/?62317>

                 Summary: AVX is missing for FFTW library
                 Project: GNU Octave
            Submitted by: jinchuantang
            Submitted on: Fri 15 Apr 2022 03:46:03 AM UTC
                Category: Libraries
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Jinchuan Tang
        Originator Email: 
             Open/Closed: Open
                 Release: 7.1.0
         Discussion Lock: Any
        Operating System: Microsoft Windows

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Details:

Dear all,
It seems that both my 6.4 and 7.1 version of Octave on Windows are producing
the incorrect version of fftw. It is supposed to be fftw-3.3.10-sse2-avx for I
have Intel avx enabled CPUs but the followings are what I have:

>> __octave_config_info__ ("fftw_version")
ans = fftw-3.3.10-sse2
>> __octave_config_info__ ("fftwf_version")
ans = fftw-3.3.10-sse2 
>> version -fftw
ans = fftw-3.3.10-sse2

Could there be a problem with the compile flags for windows?
In https://fftw.org/install/windows.html, we see this info:
Options to exploit SSE2/AVX (the DLL is still portable because it checks at
runtime to make sure SSE2/AVX is available):
[--enable-float] --enable-sse2.
[--enable-float] --enable-avx.

Thank you very much!

Best wishes,
Jinchuan Tang





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