[CP2K-user] [CP2K:14119] FFT library FFTW3 is not available ....

[vasanth kumar]

Hi Matthias
I tried to compile cp2k-7.1 in cygwin with the edited arch file, but got an
error.
pl find attached arch file and error screenshot.
Thank you for help
[image: image.png]

On Tue, 27 Oct 2020 at 14:20, Krack Matthias (PSI) <matthi... at psi.ch>
wrote:

> Hi
>
>
>
> The arch file does not include the flag –D__FFTW and thus that lib is not
> available. Just use the default FFT lib FFTSG which is part of the CP2K
> code.
>
> You may select the FFTSG as the preferred FFT lib (see
> https://manual.cp2k.org/trunk/CP2K_INPUT/GLOBAL.html#PREFERRED_FFT_LIBRARY)
> to get rid of the warning.
>
>
>
> Matthias
>
>
>
> *From:* cp... at googlegroups.com <cp... at googlegroups.com> *On Behalf Of *vasanth
> kumar
> *Sent:* Dienstag, 27. Oktober 2020 09:39
> *To:* cp... at googlegroups.com
> *Subject:* Re: [CP2K:14118] FFT library FFTW3 is not available ....
>
>
>
> hi Matthias
>
>
>
> tq for reply. I installed cp2k via cygwin on windows pc .
>
> I am seeing a file as libcp2kfft in the lib folder.
>
> I used an  arch file to compile the cp2k. arch file is attached to your
> reference.
>
> Thank you for help
>
>
>
>
>
> On Tue, 27 Oct 2020 at 13:24, Krack Matthias (PSI) <matthi... at psi.ch>
> wrote:
>
> Hi
>
>
>
> It seems your CP2K executable does not include the FFTW library. Check, if
> your CP2K executable was compiled with the –D__FFTW flag.
>
>
>
> Matthias
>
>
>
> *From:* cp... at googlegroups.com <cp... at googlegroups.com> *On Behalf Of *vasanth
> kumar
> *Sent:* Dienstag, 27. Oktober 2020 06:01
> *To:* cp... at googlegroups.com
> *Subject:* [CP2K:14116] FFT library FFTW3 is not available ....
>
>
>
>
> Hi
>
>
>
> I tried to reproduce the one of the presentation given in
> https://www.archer2.ac.uk/training/courses/201013-cp2k/
>
>
>
> but It is ended with  WARNING : FFT library FFTW3 is not available  Trying
> FFTSG as a default
>
>
>
> pl find the inp and out files
>
>
>
> pl suggest the solution
>
>
>
> your help greatly appreciated
>
>
>
> thank you
>
> --
>
> With Regards
>
> Dr. V. Vasantha Kumar
>
> Assoc. Prof. of Physics
>
> Vignan Institute of Technology and Science
>
> Hyderabad.
>
> Mob:9959363113
>
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>
>
>
> --
>
> With Regards
>
> Dr. V. Vasantha Kumar
>
> Assoc. Prof. of Physics
>
> Vignan Institute of Technology and Science
>
> Hyderabad.
>
> Mob:9959363113
>
> --
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-- 
With Regards

Dr. V. Vasantha Kumar
Assoc. Prof. of Physics
Vignan Institute of Technology and Science
Hyderabad.
Mob:9959363113
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