[MPICH] Do MPI2,MPICH2 support the Multicast communications

[Eng. A.A. Isola]

But if I have many indipendent mpi processes that work 
separately and 
later I want connect in any way them, what can I use? Is 
it possible 
to use the MULTICAST addresses similar to the UDP 
setsockopt? Have you 
an idea to realize with the actual routines 
available (MPI_Open_port,
connect etc) that are very close with TCP, is it possible to realize 
something very closed to a multicast communications for n 
indipendent 
processes, where for ex. there's one process that is
the sender and the 
other n-1 that have to receive in multicast.

Bye

Alfonso A. Isola