[mpich-discuss] MPI_Comm: Accept and connect comunicators

[Rajeev Thakur]

If the clients are all independent and have no relation to each other, you
can use MPI_COMM_SELF on the client side. If the clients form a single
parallel job, you want to use comm_world. Similarly, if you have a group of
servers wanting to jointly establish connection with one or more clients,
use comm_world on the servers; else use comm_self.

Rajeev

> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov 
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of 
> Francisco Javier García Blas
> Sent: Tuesday, March 18, 2008 7:10 AM
> To: mpich-discuss at mcs.anl.gov
> Subject: [mpich-discuss] MPI_Comm: Accept and connect comunicators
> 
> Hi all,
> 
> I am writing a simple test that use MPI_Comm_Accept/Connect 
> primitives. 
> What is the difference between using MPI_COMM_WORLD or 
> MPI_COMM_SELF in this primitives?  The aim of the test 
> consists of creating communicators to connect each of clients 
> to all servers and vice versa.
> 
> Thanks a lot.
> Javier
> 
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> Francisco Javier García Blas
> Computer Architecture, Communications and Systems Area.
> Computer Science Department. UNIVERSIDAD CARLOS III DE MADRID 
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> e-mail: fjblas at arcos.inf.uc3m.es
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>