Funny, but I couldn't find the code path that supported that in the latest 1.6 
series release (didn't check earlier ones) - but no matter, it seems logical 
enough. Fixed in the trunk and cmr'd to 1.7.4

Thanks!
Ralph

On Dec 19, 2013, at 8:08 PM, Tim Miller <btamil...@gmail.com> wrote:

> Hi Ralph,
> 
> That's correct. All of the original processes see the -x values, but spawned 
> ones do not.
> 
> Regards,
> Tim
> 
> 
> On Thu, Dec 19, 2013 at 6:09 PM, Ralph Castain <r...@open-mpi.org> wrote:
> 
> On Dec 19, 2013, at 2:57 PM, Tim Miller <btamil...@gmail.com> wrote:
> 
> > Hi All,
> >
> > I have a question similar (but not identical to) the one asked by Tom Fogel 
> > a week or so back...
> >
> > I have a code that uses MPI_Comm_spawn to launch different processes. The 
> > executables for these use libraries in non-standard locations, so what I've 
> > done is add the directories containing them to my LD_LIBRARY_PATH 
> > environment variable, and then calling mpirun with "-x LD_LIBRARY_PATH". 
> > This works well for me on OpenMPI 1.6.3 and earlier. However, I've been 
> > playing with OpenMPI 1.7.3 and this no longer seems to work. As soon as my 
> > code MPI_Comm_spawns, all the spawned processes die complaining that they 
> > can't find the correct libraries to start the executable.
> >
> > Has there been a way that exported variables are passed to spawned 
> > processes between OpenMPI 1.6 and 1.7?
> 
> Not intentionally, though it is possible that some bug crept into the code. 
> If I understand correctly, the -x values are being seen by the original 
> procs, but not by the comm_spawned ones?
> 
> 
> > Is there something else I'm doing wrong here?
> >
> > Best Regards,
> > Tim
> > _______________________________________________
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> > us...@open-mpi.org
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> 
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