[MPICH] How do I get the communicator of the spawned group in the spawnee?

[Rajeev Thakur]

The intercommunicator returned by MPI_Comm_spawn is the one you are looking
for.
 
MPI_Comm_get_parent on the spawned processes returns an intercommunicator
that has the spawned processes in one group and the parent processes in the
other group. MPI_Comm_spawn on the spawnees returns the same
intercommunicator, which can be used for communication with the spawned
processes.
 
Rajeev
 


  _____  

From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of David Minor
Sent: Sunday, July 03, 2005 9:15 AM
To: mpich-discuss at mcs.anl.gov
Subject: [MPICH] How do I get the communicator of the spawned group in the
spawnee?



Hello List, 

intercomm.Get_parent() from the spawned processes returns me the
communicator of the spawnee, but how do I get the communicator of the

spawned processes from the spawnee?  intercomm.Get_remote_group() returns me
the group, but how do I get the communicator?

Thanks, 
David Minor 

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