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Subject: Re: [OMPI users] Changing the MPIRUN/MPIEXEC semantics
From: Simone Pellegrini (spellegrini_at_[hidden])
Date: 2009-07-03 12:14:36


Ralph Castain wrote:
> Sure:
>
> mpirun --np 3 mpi_app1 "app1_args" : -np x mpi_app2 "app2_args" : -np
> y mpi_app3 "app3_args"
>
Nice, but what the implication with the process rank?

Can I assume that app1 will have rank 0, app2 rank 1 and app3 rank 3? or
there are no assumption that can me made?

thanks again, regards Simone
>
> On Jul 3, 2009, at 9:36 AM, Simone Pellegrini wrote:
>
>> Dear all,
>> current implementation of mpirun starts the executable in different
>> nodes. For some reason I need to start different MPI applications
>> across nodes and I want to use MPI to communicate among these
>> applications. For short I want to breakdown the SPMD model, something
>> like:
>>
>> mpirun --np 3 mpi_app1 "app1_args", mpi_app2, "app2_args", mpi_app3,
>> "app3_args"
>>
>> Is it possible to have this kind of behavior with the current
>> implementation of mpirun?
>> if not... it's implement it via changing the mpirun and/or mpiexec
>> routines or does it implies radical changes to the entire Open MPI
>> library?
>>
>> regards, Simone
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
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