Re: [ESPResSo-users] fftw files using P3M

[Olaf Lenz]

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Hi!

The fftw-files are files where fftw3 (surprise, surprise!) stores
information on how to best perform FFTs on you machine (the so called
"wisdom"). I am annoyed by these files since I started using ESPResSo,
but so far they did not really cause a problem.

To me it looks as though FFTW is not able to read the files it has
written before, but I do not understand why. Do you probably have a
problem with your quota, so that fftw sometimes cannot create new files?
Can you send me the script that creates the problem, then I can have a
look whether I can reproduce the problem, or whether the problem is
somewhere in your settings?

> My solution to this has been to copy the list of fftw3* files into
>  each directory where a new script will be run. This has been 
> successful in avoiding the error messages, but I am wondering what
>  causes the original problem and if this is a correct procedure.

In any case, your solution does not hurt, it won't break anything, so you
can do this. It shouldn't be necessary, though.

Olaf
- -- 
Dr. rer. nat. Olaf Lenz
Institut für Computerphysik, Allmandring 3, D-70569 Stuttgart
Phone: +49-711-685-63607

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