If i mpirun the MPI application--'hello world' on a single computer(dual core) itself, it is work. But it can't be successful when i mpirun it across multiple nodes. The rsh/ssh agent is work, i can rsh/ssh to other nodes.Everytime i mpirun 'hostname' , the remote rsh/ssh agent ask for the password.I enter the password but the Openmpi is hang. It is just hang and nothing else.

I don't know what happen to my Openmpi enviroment or operating system.

Would you ever encount this problem?

Vincent
"Jeff Squyres (jsquyres)" <jsquyres@cisco.com> 說：

Can you provide a little more information?

What exactly are you trying to mpirun across multiple nodes? Is it an MPI application or a non-MPI application? For example, can you mpirun "hostname" (i.e., the Unix hostname utility) across multiple nodes successfully?

If you're trying to mpirun a user application, what application is it? Can you mpirun a trivial MPI application (e.g., hello world) successfully?

Thanks.

From: users-bounces@open-mpi.org [mailto:users-bounces@open-mpi.org] On Behalf Of shen T.T.
Sent: Wednesday, June 21, 2006 11:01 AM
To: users@open-mpi.org
Subject: [OMPI users] rsh/ssh is work but mpirun hang ?

I have installed the openmpi -1.0.2 on the Fedora Core5 operating system. I use the Intel Fortran compiler. I can rsh/ssh to the other processor in our cluster( 2 PC's , 4cores). I can mpirun on a processor itself successfully. When i mpirun on 2 PC's, after entering the password, the program will be hung!

Does anyone encounter this problem?How do i check and fix it?

Thanks in advance

Vincent

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