Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

From: Tim Prins (tprins_at_[hidden])
Date: 2007-10-22 20:41:30


Hi Jorge,

This is interesting. The problem is the universe name:
root@(none):default-universe

The "(none)" part is supposed to be the hostname where mpirun is executed. Try
running:
hostname

and:
uname -n

These should both return valid hostnames for your machine.

Open MPI pretty much assumes that all nodes have a valid (preferably unique)
hostname. If the above commands don't work, you probably need to fix your
cluster.

Let me know if this does not work.

Thanks,

Tim

On Thursday 18 October 2007 09:22:09 pm Jorge Parra wrote:
> Hi,
>
> When trying to execute an application that spawns to another node, I
> obtain the following message:
>
> # ./mpirun --hostfile /root/hostfile -np 2 greetings
> Syntax error: "(" unexpected (expecting ")")
> --------------------------------------------------------------------------
> Could not execute the executable
> "/opt/OpenMPI/OpenMPI-1.1.5b/exec/bin/greetings
> ": Exec format error
>
> This could mean that your PATH or executable name is wrong, or that you do
> not
> have the necessary permissions. Please ensure that the executable is able
> to be
>
> found and executed.
> --------------------------------------------------------------------------
>
> and in the remote node:
>
> # pam_rhosts_auth[183]: user root has a `+' user entry
> pam_rhosts_auth[183]: allowed to root_at_192.168.1.102 as root
> PAM_unix[183]: (rsh) session opened for user root by (uid=0)
> in.rshd[184]: root_at_192.168.1.102 as root: cmd='( ! [ -e ./.profile ] || .
> ./.pro
> file; orted --bootproxy 1 --name 0.0.1 --num_procs 3 --vpid_start 0
> --nodename 1
> 92.168.1.103 --universe root@(none):default-universe --nsreplica
> "0.0.0;tcp://19
> 2.168.1.102:32774" --gprreplica "0.0.0;tcp://192.168.1.102:32774"
> --mpi-call-yie
> ld 0 )'
> PAM_unix[183]: (rsh) session closed for user root
>
> I suspect the command that rsh is trying to execute in the remote node
> fails. It seems to me that the first parenthesis in cmd='( ! is not well
> interpreted, thus causing the syntax error. This might prevent .profile to
> run and to correctly set PATH. Therefore, "greetings" is not found.
>
> I am attaching to this email the appropiate configuration files of my
> system and openmpi on it. This is a system in an isolated network, so I
> don't care too much for security. Therefore I am using rsh on it.
>
> I would really appreciate any suggestions to correct this problem.
>
> Thank you,
>
> Jorge