[Beowulf] Help with MPICH programming

Mark Westwood mark.westwood at ohmsurveys.com
Thu Jul 28 10:58:02 EDT 2005


Kevin

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.

Regards

Mark

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
OHM Ltd
The Technology Centre
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