You may also want to check with the admin. I know on the system I use, he will prevent you from using many nodes until you demonstrate you know what you are doing.
-----Original Message----- From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On Behalf Of Jeff Squyres Sent: Wednesday, March 24, 2010 3:33 PM To: Open MPI Users Subject: Re: [OMPI users] Non-root install; hang there running on multiple nodes Can you mpirun non-MPI applications, like "hostname"? I frequently run this as a first step to debugging a wonky install. For example: shell$ hostname barney shell$ mpirun hostname barney shell$ cat hosts barney rubble shell$ mpirun --hostfile hosts hostname barney rubble shell$ On Mar 24, 2010, at 4:28 PM, haoanyi wrote: > Hi, > > I installed OpenMPI1.4.1 as a non-root user on a cluster. It is totally OK when I run with mpirun or mpiexec on one single node for many processes. However, when I lauch many processes on multiple nodes, I can observe jobs are distributed to those nodes (by using "top"), but all the jobs just hang there and cannot finish. > > I think the nodes use TCP to communicate with each other. This cluster also provides MPICH2, which was configured by the sys admin., and has no problem to do node communication in MPICH2. Besides, I read from some posts, which says this may be caused by TCP firewall. Since I have no root's right, and I don't know what shall request the admin. to do to fix this problem. So, can you tell me how to do that either by the admin root or by the non-root user (if possible)? > > Thank you very much. > Hao > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/ _______________________________________________ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users
