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Subject: Re: [OMPI users] mpiexec hangs - new install
From: Ralph Castain (rhc_at_[hidden])
Date: 2010-07-23 17:17:48


Check for a firewall blocking tcp communications - that's the most common issue.

On Jul 23, 2010, at 3:05 PM, James wrote:

> Hi,
>
> I am trying to get OpenMPI running on my home network. This has two
> machines, t61 and quad, both running SuSE 11. I'm using the "hello_c"
> program from the examples as a test. It will run fine on each machine,
> using whatever number or processes I specify. However, when I try to
> run on multiple machines, it hangs.
>
> If I start from t61 with the command "mpiexec -host t61,quad -np 2 hello"
> then I see that command when I do a ps -ax on t61. On quad I see
> "orted --daemonize (long parameter string)". Both of them seem to be
> silently waiting on some event, but I've no idea what.
>
> Both machines are running OpenMPI 1.4.2 (compiled from same tar file),
> installed in /opt/openmpi. The executables are in the same user/path
> on each machine (/home/me/src/openmpi/examples), and path,
> LD_LIBRARY_PATH, and so on all seem the same.
>
> Any suggestions?
>
> Thanks,
> James
>
> PS: Also, may I suggest putting something in the FAQ pointing out
> that the environment vars need to be set in .tcshrc, not .login?
> It would have saved me several hours.
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