[Beowulf] Help with MPICH programming

Mark Westwood mark.westwood at ohmsurveys.com
Thu Jul 28 07:58:02 PDT 2005


the MPICH home page is at: http://www-unix.mcs.anl.gov/mpi/mpich/ and 
will lead you to most of what you need to know about MPI and MPICH.  You 
should browse the documentation looking for MPI_COMM_CREATE or 
MPI_COMM_SPLIT.  These probably give you the facility you want.  You 
could also investigate MPI GROUPs.



PS not me

Cheng, Kevin wrote:
> 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
> Kev
> 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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Mark Westwood
Parallel Programmer
The Technology Centre
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