[Pw_forum] which file is a must for continueing ph.x run if time_max is reached?

[Paolo Giannozzi]

On Friday 13 January 2006 18:32, Konstantin Kudin wrote:

>  Actually, suppose the job is restarted on the same nodes as before,
> but the process ordering got screwed up. Would it be possible to do
> something like this:
>
>  -upon a restart probe for the existence of the restartable files (the
> names are generally known!) on each node, and make a list of what is
> available
>
>  -figure out if each process can see some unique file, and create a
> 1-to-1 mapping from process numbers to file numbers
>
>  -then upon read/write simply remap the sequential file numbers into
> the other ordering

you may need not only to remap files, but also to have the same distribution
of grid points in R-space and vectors in G-space across processors 
than in the previous run. In the specific case of phonon calculation it
might not be needed; I have to check this.

Paolo

-- 
Paolo Giannozzi             e-mail:  giannozz at nest.sns.it
Scuola Normale Superiore    Phone:   +39/050-509876, Fax:-563513 
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