Hi, Terry, Thank you very much for your help. It worked!
Min -----Original Message----- From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On Behalf Of Terry Frankcombe Sent: 16 April 2009 12:07 To: Open MPI Users Subject: Re: [OMPI users] An mpirun question 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 _______________________________________________ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users ________________________________________________________________________ This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ 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.
