Noam and I actually talked on the phone (whaaaatt!?) and worked through this a 
bit more.

Oddly, he can generate core files if he runs in /tmp, but not if he runs in an 
NFS-mounted directory (!).  I haven't seen that before -- if someone knows why 
that would happen, I'd love to hear the explanation.

Regardless, here's what we're going to do:

1. Noam is going to run with a master nightly snapshot and see if that makes 
things better.

2. If not, he'll be able to generate core files and we can poke around in a 
debugger to get a bit more information.



> On Jul 12, 2018, at 12:41 PM, Noam Bernstein <noam.bernst...@nrl.navy.mil> 
> wrote:
> 
>> On Jul 12, 2018, at 11:58 AM, Jeff Squyres (jsquyres) <jsquy...@cisco.com> 
>> wrote:
>> 
>> 
>> 
>> (You may have already done this; I just want to make sure we're on the same 
>> sheet of music here…)
> 
> I’m not talking about the job script or shell startup files.  The actual 
> “executable” passed to mpirun on the command line is the script which runs 
> ulimit and then the actually mpi binary.  I think that should be safe, right?
> 
>                                                               Noam
> 


-- 
Jeff Squyres
jsquy...@cisco.com

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