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Subject: Re: [OMPI users] Executions in two different machines
From: Ralph Castain (rhc_at_[hidden])
Date: 2012-06-18 10:00:55

Try adding "-x LD_LIBRARY_PATH=<remote-prefix>" to your mpirun cmd line

On Jun 18, 2012, at 7:11 AM, Harald Servat wrote:

> Hello list,
> I'd like to use OpenMPI to execute an MPI application in two different
> machines.
> Up to now, I've configured and installed OpenMPI 1.6 in my two systems
> (each on a different directory). When I execute binaries within a system
> (in any) the application works well. However when I try to execute in
> the two systems, it does not work, in fact it complains it cannot find
> "orted". This is the command I try to run and its output
> # $HOME/aplic/openmpi/1.6/bin/mpirun -display-map --machinefile hosts
> -np 2 /bin/date
> ======================== JOB MAP ========================
> Data for node: M1 Num procs: 1
> Process OMPI jobid: [6021,1] Process rank: 0
> Data for node: M2 Num procs: 1
> Process OMPI jobid: [6021,1] Process rank: 1
> =============================================================
> bash: /home/harald/aplic/openmpi/1.6/bin/orted: El fitxer o directori no
> existeix
> --------------------------------------------------------------------------
> A daemon (pid 19598) died unexpectedly with status 127 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.
> --------------------------------------------------------------------------
> My guess is that the spawn process cannot find orted in M2 because the
> installation prefix of M1 and M2 differ. Is my guess correct? As I
> cannot change the prefix of the two installation, how can I tell mpirun
> to look for orted in a different place? After looking at the
> documentation, I've tried with --prefix and --launch-agent without
> success.
> Thank you very much in advance.
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