Hi,
As of now LAM does not support collectives over intercommunicators but it
will soon appear in a future version of LAM (7.1) which will be released
around May 2004.
Amey S. Dharurkar
----------------------------------------------------------
Graduate Student, Indiana University
Ph. O:(812)855-3609, H:(812)331-8203
On Tue, 2 Mar 2004, Martyn Klassen wrote:
> I use MPI_Comm_spawn to create children processes and I want to
> broadcast form the parents to the children. The MPI2 standard seems to
> indicate that the root process in parents group should call MPI_Bcast
> with the special root value of MPI_ROOT and all other parent processes
> should use MPI_PROC_NULL. The processes in the children group are to
> specify the root value in the parent group that is broadcasting the
> message. However, MPI_ROOT is not defined in LAM and using normal root
> value does not seem to work. How do you broadcast over an
> intercommunicator?
>
> Martyn Klassen
>
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