[CP2K-user] [CP2K:22316] Troubleshooting: changing periodicity and index to radix array not found

[Michela Cavalieri]

Dr. Stein, thank you so much for your help! Sorry for the long time to 
respond on my end as well. For some reason, I did not receive an email 
notification! I am trying FFTW3 now and increased the print level to HIGH. 
I will update you as soon as possible.

Thank you very much!
Michela

On Thursday, July 9, 2026 at 11:25:07 AM UTC-4 Stein, Dr. Frederick wrote:

> Dear Michela,
> Sorry for the long time to respond. I guess it is just a very special 
> question.
> Your system may be too large for the internal FFT library. Please consider 
> PREFERRED_FFT_LIBRARY FFTW3. I have just run the calculation with FFTW3 
> but 
> replaced your system with hydrogen such that the underlying FFT-grids 
> should 
> be the same. If you still observe an error, could you increase the print 
> level and send a suitable output file.
> Best,
> Frederick
>

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