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From: Jorge Parra (jeparra_at_[hidden])
Date: 2007-10-18 21:22:09


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
": Exec format error

This could mean that your PATH or executable name is wrong, or that you do
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 ] || .
file; orted --bootproxy 1 --name 0.0.1 --num_procs 3 --vpid_start 0
--nodename 1 --universe root@(none):default-universe --nsreplica
"0.0.0;tcp://19" --gprreplica "0.0.0;tcp://"
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,