[bgl-discuss] Re: [bgl-support] MPI_MAPPING vs. BGLMPI_MAPPING

[Narayan Desai <desai@xxxxxxxxxxx>]

>>>>> "Katherine" == Katherine M Riley <Katherine> writes:

  Katherine> For the tutorial we were trying to demonstrate some
  Katherine> mapping options.  But, when folks were passing in with
  Katherine> "-e" to the queuing system, we would get a complaint that
  Katherine> both MPI_MAPPING and BGLMPI_MAPPING are both set.  None
  Katherine> of us know what MPI_MAPPING is but we tried setting that
  Katherine> back and forth between XYZT and TXYZ and got no change.

  Katherine> So - my question - do we know what MPI_MAPPING is?  And,
  Katherine> why can't we set BGLMPI_MAPPING?

Cobalt isn't setting any environment variables implicitly. My hunch is
that this is a bug in the mpirun command. We could concievably remap 
this option in the process manager, if we can find a working way to
setup the mapping.  

Has the environment variable name changed? Does specifying the
MPI_MAPPING variable work?
 -nld



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