Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] MPI based HLA/RTI ?
From: John Chludzinski (john.chludzinski_at_[hidden])
Date: 2013-04-15 11:29:54


That would seem to preclude its use for an RTI. Unless you have a card up
your sleeve?

---John

On Mon, Apr 15, 2013 at 11:23 AM, Ralph Castain <rhc_at_[hidden]> 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.chludzinski_at_[hidden]>
> 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 <rhc_at_[hidden]> 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.chludzinski_at_[hidden]>
>> 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.chludzinski_at_[hidden]> wrote:
>> >> Is anyone aware of an MPI based HLA/RTI (DoD High Level Architecture
>> >> (HLA) / Runtime Infrastructure)?
>> >>
>> >> ---John
>> > _______________________________________________
>> > users mailing list
>> > users_at_[hidden]
>> > http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
>>
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
>
>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users
>