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Subject: Re: [OMPI users] pipe function call failed...
From: Ralph Castain (rhc_at_[hidden])
Date: 2010-03-09 11:52:19


Ignoring an error doesn't seem like a good idea. The real question is why we are getting that error - it sounds like the newest Glibc release has changed the API?? Can you send us the revised one so we can put in a test and use the correct API for the installed version?

On Mar 9, 2010, at 9:40 AM, Lasse Kliemann wrote:

> $ mpirun -n 1 ls
> --------------------------------------------------------------------------
> mpirun was unable to launch the specified application as it encountered an error:
>
> Error: pipe function call failed when setting up I/O forwarding subsystem
> Node: xxxxx.xxxxxxxxxx.xxxxxxxx.xx
>
> while attempting to start process rank 0.
> --------------------------------------------------------------------------
>
> I receive this error constantly. I tracked it down so far that it
> appears now certain that the 'tcgetattr' and 'tcsetattr' calls in
> 'orte/mca/iof/base/iof_base_setup.c' are responsible. 'errno' is
> set to 22 each, which means 'invalid argument'. We can simply
> ignore the return values of these calls and continue, as done in
> the attached patch. Some simple tests suggest that everything
> else is fine, but I haven't tested thoroughly yet.
>
> On another system, this problem is absent. The main difference
> are GCC and Glibc versions. The problematic system uses GCC 4.3.4
> and Glibc 2.11.1 -- which is the newest Glibc release and maybe
> untested yet with OpenMPI.
>
> Let me know which additional information I can provide to further
> analyze this issue.
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