Hi Min Zhu You need to read about hostfiles and bynode/byslot scheduling. See here: <http://www.open-mpi.org/faq/?category=running#mpirun-scheduling>
Ciao On Thu, 2009-04-16 at 10:43 +0100, Min Zhu wrote: > Dear all, > > > > I wonder if you could help me with this question. > > I have got 3 Linux servers with 8 processors on each server. If I want > to run a job using mpirun command > > and specify the number of processors to be used on each server. Is > there any way to do this? At the moment, > > I find that I can only issue such command “mpirun –np 14 –host > cfd1,cfd2 ./wrf.exe’ which means the mpirun > > Will run the job using 7 processors on each server cfd1 and cfd2. Can > I specify say using 8 processors on cfd1 and > > 6 processors on cfd2? I ask this question because I found that the > different combination of processors on those > > Servers can influence the computation time dramatically. Thank you > very much in advance, > > > > Cheers, > > > > Min Zhu > > > > CONFIDENTIALITY NOTICE: This e-mail, including any attachments, > contains information that may be confidential, and is protected by > copyright. It is directed to the intended recipient(s) only. If you > have received this e-mail in error please e-mail the sender by > replying to this message, and then delete the e-mail. Unauthorised > disclosure, publication, copying or use of this e-mail is prohibited. > Any communication of a personal nature in this e-mail is not made by > or on behalf of any RES group company. E-mails sent or received may be > monitored to ensure compliance with the law, regulation and/or our > policies. > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
