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Subject: Re: [OMPI users] OpenMPI out of band TCP retry exceeded
From: Ralph Castain (rhc_at_[hidden])
Date: 2011-04-28 09:01:59


On Apr 28, 2011, at 6:49 AM, Jeff Squyres wrote:

> On Apr 28, 2011, at 8:45 AM, Ralph Castain wrote:
>
>> What lead you to conclude 1.2.8?
>>
>>>>>> /opt/openmpi/i386/bin/mpirun -mca btl_openib_verbose 1 --mca btl ^tcp
>>>>>> --mca pls_ssh_agent ssh -mca oob_tcp_peer_retries 1000 --prefix
>>>>>> /usr/lib/openmpi/1.2.8-gcc/bin -np 239 --app procgroup
>
> His command line has "1.2.8" in it.

Actually, that isn't totally correct and may point to the problem. The mpirun cmd itself points to a version of OMPI located in /opt/openmpi. The error messages are clearly from a 1.3+ version - they look totally different for 1.2

However, the prefix passed to the backend nodes points to /usr/lib, and indeed looks like a 1.2.8 version.

Waris: is this a mistype? Are these two versions actually the same?

If not, that would explain the problem - you can't mix OMPI versions. As written, the cmd line has the potential to mix one version of mpirun with another version of the daemons.

>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
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