[Beowulf] Help with MPICH programming

Cheng, Kevin kc40 at hw.ac.uk
Wed Jul 27 12:33:04 PDT 2005

I've been looking and looking on the internet for documentation on programming in MPI but couldn't find any.
What am needing to know is how to change the communication group for MPICH-1.2.1. Basically so that when the master process 0 broadcasts a message it will only be heard by the processes in a specific communication group.
Many thanks
PS: Did anyone find out how to dynamically create/destroy MPI processes on-the-fly / in-real-time for MPICH-2?
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