[MPICH] Changing the comm size at runtime

[Patrick Gräbel]

This looks like what I was searching for. Thanks! The release notes from
the MPICH-2 homepage informs that dynamic process support (e.g.
MPI_Comm_connect) is supported for the channels sock, ssm and sshm. So I
think that I am able to use fast shared memory via intercom, too....

Greetings
Patrick

Rajeev Thakur wrote:
> You can use all MPI communication functions, including collectives. It will
> be the intercommunicator version of the collectives defined in MPI-2, as the
> communicator returned by a connect-accept is an intercommunicator.
> 
> Rajeev