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Subject: Re: [OMPI users] User Interface for MPMD
From: Frank Kampe (u2591_at_[hidden])
Date: 2012-08-10 12:49:07

No. I am looking for a user-callable function that will return information about the running OpenMPI MPMD program from within the running program---the information listed below in (1) -- (3).

From: users-bounces_at_[hidden] [users-bounces_at_[hidden]] on behalf of Ralph Castain [rhc_at_[hidden]]
Sent: Friday, August 10, 2012 11:15 AM
To: Open MPI Users
Subject: Re: [OMPI users] User Interface for MPMD

I'm actually not sure I understand the question - are you talking about a programmatic API where an application wants to spawn an MPI program? Or an inter-program communication API that wants to tell another program some information? Or an API by which the app can tell MPI "I'm going to spawn N threads"? Or...?

On Aug 10, 2012, at 9:00 AM, Gus Correa <gus_at_[hidden]> wrote:

> On 08/10/2012 11:31 AM, Frank Kampe wrote:
>> Are there any user level APIs to provide the following information to a running OpenMPI MPMD program:
>> (1) Number of executable instances
>> (2) 1st MPI Task rank of each instance
>> (3) Number of MPI Tasks per instance
>> Thank You
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
> Hi Frank
> Check 'man mpiexec', the --app file option, maybe also --rankfile.
> The on process binding at the end may also help.
> I hope this helps,
> Gus Correa
> _______________________________________________
> users mailing list
> users_at_[hidden]

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