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Subject: Re: [OMPI users] After OS Update MPI_Init fails on one host
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-07-23 09:36:00


I see - I didn't look at the redhat bug list. Sadly, I have no idea how to debug it. The Fedora package is built optimized, so no OMPI debugging output is available and a debugger won't tell us a lot.

Best guess is that there is something in the build that doesn't match the user's system. The nidmap_init routine unpacks a buffer that contains a bunch of process mapping info that mpirun packed into it - don't usually see an error in there.

On Jul 23, 2013, at 5:57 AM, "Jeff Squyres (jsquyres)" <jsquyres_at_[hidden]> wrote:

> On Jul 23, 2013, at 8:54 AM, Ralph Castain <rhc_at_[hidden]> wrote:
>
>>> Yes, it's curious that they can't reproduce your issue,
>>
>> Guess I missed this - where does it say that they can't reproduce the issue?? I'm suspicious because build-from-source produced a working result.
>
> Orion mentioned it in https://bugzilla.redhat.com/show_bug.cgi?id=986409.
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
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