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Subject: [OMPI users] issue with 2 connected computers
From: christophe petit (christophe.petit09_at_[hidden])
Date: 2012-07-20 00:13:03


Hello,

I try to launch an executable on 2 computers ( Debian 6.0 and MacOS snow
leopard ).

I have successfully installed on both Open-MPI 1.6 with the option
"--enable-heterogenous" and
setup passwordless ssh connection between the 2 computers.

My issue is that the distributed computing works fine but only when I
launch the
"mpirun -np 16 -hostfile hosts.txt program_exec" command from the MacOS
computer, not from Debian pc.

However, I have disabled firewall on MacOS with :

sysctl -w net.inet.ip.fw.enable=0

When I launched from Debian, I get :

*~/mpirun -np 16 -hostfile hosts.txt program_exec

[maco:01498] Error: unknown option "--daemonize"
Usage: orted [OPTION]...
Start an Open RTE Daemon

   --bootproxy <arg0> Run as boot proxy for <job-id>
-d|--debug Debug the OpenRTE
-d|--spin Have the orted spin until we can connect a debugger
                         to it
   --debug-daemons Enable debugging of OpenRTE daemons
   --debug-daemons-file Enable debugging of OpenRTE daemons, storing output
                         in files
   --gprreplica <arg0> Registry contact information.
-h|--help This help message
   --mpi-call-yield <arg0>
                         Have MPI (or similar) applications call yield when
                         idle
   --name <arg0> Set the orte process name
   --no-daemonize Don't daemonize into the background
   --nodename <arg0> Node name as specified by host/resource
                         description.
   --ns-nds <arg0> set sds/nds component to use for daemon (normally
                         not needed)
   --nsreplica <arg0> Name service contact information.
   --num_procs <arg0> Set the number of process in this job
   --persistent Remain alive after the application process
                         completes
   --report-uri <arg0> Report this process' uri on indicated pipe
   --scope <arg0> Set restrictions on who can connect to this
                         universe
   --seed Host replicas for the core universe services
   --set-sid Direct the orted to separate from the current
                         session
   --tmpdir <arg0> Set the root for the session directory tree
   --universe <arg0> Set the universe name as
                         username_at_hostname:universe_name for this
                         application
   --vpid_start <arg0> Set the starting vpid for this job
--------------------------------------------------------------------------
A daemon (pid 24370) died unexpectedly with status 251 while attempting
to launch so we are aborting.

There may be more information reported by the environment (see above).

This may be because the daemon was unable to find all the needed shared
libraries on the remote node. You may set your LD_LIBRARY_PATH to have the
location of the shared libraries on the remote nodes and this will
automatically be forwarded to the remote nodes.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
mpirun noticed that the job aborted, but has no info as to the process
that caused that situation.
--------------------------------------------------------------------------
*
LD_LIBRARY_PATH and PATH are correctly set on both ( Open-MPI is installed
on
"/usr/local/openmpi/" ).

Apparently, the problem comes from the Debian pc ...

If anyone sees what's wrong ?

Thanks.