Hi, I am not expert, I am user like you but I think I can help you, Q. After installing OpenMPI on each machine ,do i need to run a service/daemon on each machine? Ans. No, not at all, Open MPI takes care of that for you.
Q. How does peers in MPI environment communicate ? Ans. Using Communicator(name of the group of processes to whom it belongs, technically handle) and rank of the process in that Communicator. Q. After implementing parallel program , do I have to install the application on every machine ? Ans. Not necessary. Use "--preload-binary" option while launching the application through mpirun or mpiexec. Useful links: 1. http://www.open-mpi.org/faq/?category=running#simple-spmd-run 2. http://www.open-mpi.org/faq/ 3. man page for mpirun Regards, Vipin K. On Mon, Jun 29, 2009 at 8:21 AM, Ashika Umanga Umagiliya < auma...@biggjapan.com> wrote: > Greeting all, > > I am new to Open MPI and I have some newbie questions. I have given 4 > machines at our laboratory to set up Open MPI.Our net work is simply > TCP/Ethernet running Debian Linux. > > 1) After installing OpenMPI on each machine ,do i need to run a > service/daemon on each machine? (How does peers in MPI environment > communicate ?) > > 2) After implementing parallel program , do I have to install the > application on every machine ? (I thought the program automatically > propagated to other peers , like in RMI applications? ) > > > > Thanks in advance, > Umanga > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- Vipin K. Research Engineer, C-Dot, Bangalore, India
