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Subject: Re: [OMPI users] requirement on ssh when run openmpi
From: dani (dani_at_[hidden])
Date: 2013-07-28 23:48:50

But that is not a requirement on ssh.
That is a requirement on the install base on the second node - both must have the same environment variables set, using same paths on each machine.
either install openmpi on each node, and setup  /etc/profile.d/openmpi.{c,}sh and /etc/ files on both (preferred) or install to a common file system (e.g. nfs mount) and still use profile and ldconfig to setup environment.

On 29/07//2013 05:00, meng wrote:
Dear Reuti,
  Thank you for the reply.
  In examples directory on the computer c1, command "mpiexec -np 4 hello_c" is correctly executed.
 If I run " mpiexec -machinefile hosts hello_c " on computer c1, where hosts contains two line :
"  node3
the screen displays as follows:
bash: orted: command not found
A daemon (pid 5247) 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.--------------------------------------------------------------------------
mpiexec noticed that the job aborted, but has no info as to the process
that caused that situation.
  I dont know whats wrong with it.
  Thank you.

At 2013-07-27 16:44:56,Reuti <> wrote:
>Am 27.07.2013 um 08:48 schrieb meng:
>>    what 's the requriement, especially on ssh, to run openmpi? I have two computers, say c1 and c2. Through ssh, c1 can access c2 without password, but c2 can't access c1. Under this environment, can I use openmpi to compute parallely? 
>as long as you execute `mpiexec` only on c1, it should work. But you can't start a job on c2.
>-- Reuti
>>  Regards,
>> meng
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