[Pw_forum] NaN in phonon

[Paolo Giannozzi]

On Jan 8, 2007, at 18:23 , Ezad Shojaee wrote:

> i tried to perform ph.x by a grid and at the 10th point, i have NaN in
> the 15th mode, so is seems that the code is in a cycle and does not
> continue what should i do according to the long time it has take for
> the 9 points before?!! what's the problem?

NaN = Not a Number = serious trouble. It is impossible to say what
the problem is on the basis of the above information alone

Paolo
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Paolo Giannozzi, Democritos and University of Udine, Italy