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Subject: Re: [OMPI users] can't run mpi-jobs on remote host
From: Ralph Castain (rhc_at_[hidden])
Date: 2014-04-11 10:25:36


Please see:

http://www.open-mpi.org/faq/?category=rsh#ssh-keys

short answer: you need to be able to ssh to the remote hosts without a password

On Apr 11, 2014, at 1:09 AM, Lubrano Francesco <lubrano.francesco_at_[hidden]> wrote:

> Dear MPI users,
> I have a problem with open-mpi (version 1.8).
> I'm just beginning to undestand how mpi works and I can't find solution of my problem on FAQ page.
> I have two machines (a local host and a remote host) with linux open-suse (latest version) and open-mpi 1.8
> I can run open-mpi jobs on both machines from theirself (in a "local" way).
> I have not connections problem: ssh from the first to the second works correctly and I can run programs on remote machine.
> If I run a simple non mpi program on the remot host from the local one, it doesnt' work. I think it is a buffer pointer problem (status 1). I didn't change open-mpi settings and PATH is correct. I have just one open-mpi versione on both of them. Open-mpi doesn't show any error: just return to the local machine.
> I can also request to run a false program: it does not change. on the terminal I can read
>
> francesco_at_linux-hldu:~> mpirun -host Frank_at_158.110.39.110 hostname
> Password:
> francesco_at_linux-hldu:~>
>
> If I request debug, the result is:
>
> francesco_at_linux-hldu:~> mpirun -d --host Frank_at_158.110.39.110 hostname
> [linux-hldu.site:02537] sess_dir_finalize: job session dir not empty - leaving
> [linux-hldu.site:02537] procdir: /tmp/openmpi-sessions-francesco_at_linux-hldu_0/33429/0/0
> [linux-hldu.site:02537] jobdir: /tmp/openmpi-sessions-francesco_at_linux-hldu_0/33429/0
> [linux-hldu.site:02537] top: openmpi-sessions-francesco_at_linux-hldu_0
> [linux-hldu.site:02537] tmp: /tmp
> Password:
> [linux-o5sl.site:04273] sess_dir_finalize: job session dir not empty - leaving
> [linux-o5sl.site:04273] procdir: /tmp/openmpi-sessions-Frank_at_linux-o5sl_0/33429/0/1
> [linux-o5sl.site:04273] jobdir: /tmp/openmpi-sessions-Frank_at_linux-o5sl_0/33429/0
> [linux-o5sl.site:04273] top: openmpi-sessions-Frank_at_linux-o5sl_0
> [linux-o5sl.site:04273] tmp: /tmp
> [linux-o5sl.site:04273] sess_dir_finalize: job session dir not empty - leaving
> exiting with status 1
> [linux-hldu.site:02537] sess_dir_finalize: job session dir not empty - leaving
> exiting with status 1
>
> Do you understand where is the problem? How can I get more information?
> Thank you for your cooperation
>
> regards
>
> Francesco
>
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