On Apr 15, 2013, at 8:29 AM, John Chludzinski <john.chludzin...@gmail.com> wrote:
> That would seem to preclude its use for an RTI. Unless you have a card up > your sleeve? One can relax those requirements while maintaining the ability to use send/recv - you just can't use MPI collectives, and so the result doesn't conform to the MPI standard....yet still retains value for those wanting to utilize high-speed, low-latency interconnects in non-MPI situations. > > ---John > > > On Mon, Apr 15, 2013 at 11:23 AM, Ralph Castain <r...@open-mpi.org> wrote: > It isn't the fact that there are multiple programs being used - we support > that just fine. The problem with HLA/RTI is that it allows programs to > come/go at will - i.e., not every program has to start at the same time, nor > complete at the same time. MPI requires that all programs be executing at the > beginning, and that all call finalize prior to anyone exiting. > > > 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 >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
