MPI-1 even supported MPMD -- SPMD is the most common way to invoke MPI, but it 
certainly is not necessary.

See Open MPI's man page for mpirun for how to start a series of different 
executables that all launch in the same MPI_COMM_WORLD.


On Apr 15, 2013, at 8:14 AM, John Chludzinski <john.chludzin...@gmail.com> 
wrote:

> I just received an e-mail notifying me that MPI-2 supports MPMD.  This would 
> seen to be just what the doctor ordered?
>  
> ---John
> 
> 
> On Mon, Apr 15, 2013 at 11:10 AM, Ralph Castain <r...@open-mpi.org> wrote:
> FWIW: some of us are working on a variant of MPI that would indeed support 
> what you describe - it would support send/recv (i.e., MPI-1), but not 
> collectives, and so would allow communication between arbitrary programs.
> 
> Not specifically targeting HLA/RTI, though I suppose a wrapper that conformed 
> to that standard could be created.
> 
> On Apr 15, 2013, at 7:50 AM, John Chludzinski <john.chludzin...@gmail.com> 
> wrote:
> 
> > This would be a departure from the SPMD paradigm that seems central to
> > MPI's design. Each process would be a completely different program
> > (piece of code) and I'm not sure how well that would working using
> > MPI?
> >
> > BTW, MPI is commonly used in the parallel discrete even world for
> > communication between LPs (federates in HLA). But these LPs are
> > usually the same program.
> >
> > ---John
> >
> > On Mon, Apr 15, 2013 at 10:22 AM, John Chludzinski
> > <john.chludzin...@gmail.com> wrote:
> >> Is anyone aware of an MPI based HLA/RTI (DoD High Level Architecture
> >> (HLA) / Runtime Infrastructure)?
> >>
> >> ---John
> > _______________________________________________
> > users mailing list
> > us...@open-mpi.org
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
> 
> 
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-- 
Jeff Squyres
jsquy...@cisco.com
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