I think the issue that may have caused this was the need for a double modex if 
the MPI layer selected a PML that used an MTL, and then the user provided 
oshmem MCA params specifying they use the BTL-related SPML component. My guess 
is that the defaults wound up creating that situation, which then led to the 
clean abort.

Probably just a question of correctly setting defaults in the CM scenario.

On Oct 29, 2013, at 10:02 AM, Barrett, Brian W <bwba...@sandia.gov> wrote:

> Mellanox -
> 
> It looks like someone fixed the segfault when calling start_pes() when the
> CM PML is in use.  However, I'm not sure that a clean abort is much
> better.  With the proc tags code (in both the trunk and v1.7), there's no
> reason that you can't initialize both the btls and mtls.  This may require
> some additional coding, but I think it should be doable.  I'm happy to
> help with advice / discuss implementation issues, but not supporting
> OpenSHMEM when the CM PML is in use is unacceptable and is, in my mind, a
> blocker for v1.7.
> 
> Brian
> 
> --
>  Brian W. Barrett
>  Scalable System Software Group
>  Sandia National Laboratories
> 
> 
> 
> 
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