Dear Paolo tahnks for your Ref. But i think there is bug in Q.E., When i run pw.x, CPUs work for 29 sec but time given in output file is 6 sec. Thanks again for your answer Mohsen Modaresi
On Thu, Apr 29, 2010 at 2:21 PM, Paolo Giannozzi <giannozz at democritos.it>wrote: > mohsen modaresi wrote: > > > When i run parallel (With MPICH) version with 4 core, > > in output file i see this "total time until now 6.06 sec." it take > > but if i use my watch29 sec to run. What is the problem? > > another problem: > > If i use MPICH with 1 core it takes only 17 sec (on my watch) which is > > smaller than 29, Why? > > See Sec.3, "Understanding parallelization", and sec.6.4, > "Parallelization issues", of the user guide. > > P. > -- > Paolo Giannozzi, Democritos and University of Udine, Italy > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20100430/1dd6d5c5/attachment.htm
