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 Piazza dei Cavalieri 7 I-56126 Pisa, Italy
