[Pw_forum] nscf calculation

[Stefano de Gironcoli]

Sergey Lisenkov wrote:

>Dear Stefano,
>
>Thank you for your message. I calculate 1D-system, so I need to use k-points only in one direction. Probably, I should use less k-points, because I use tetrahedron method. But I found what is a problem. It is a very simple - no enough disk space. I looked into the files and found that the size of 1 wfc file is around 3 Gb, number of wfc files is a number of processors, and size of .save file is around 15 Gb. They are very very huge. This is a source of my problem. So, because, I have no enough disk space for such calculations, is it possible to reduce the size of these files?
>  
>
If you reduce the number of points the dimension of those files will be 
correspondingly reduced.
I really cannot immagine what system needs 400 points in a given direction.

stefano

>Thanks,
> Sergey
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