From: jchen@news.eecs.nwu.edu (Jian Chen)
Newsgroups: comp.parallel.mpi
Subject: How to split MPI process
Date: 8 Sep 1998 14:35:26 GMT
Organization: Northwestern University, Evanston, IL, US
Message-Id: <6t3fbe$st4@news.acns.nwu.edu>


Hi,

I am trying to do something like this:  an MPI program (falls into
SPMD) runs on some number of processors, say 8 processors. It uses
two communicator groups. One processor acts as a server, others as
clients.  During the run, it finishes the first part and wants to start the
second part. The second part uses the splited data from the first part
and actually could be run as two separate jobs on 4 processors each.  
However, I want it to continue to run without manually start the
second part as two separate jobs.  So my question is:  how could I do
this without using a lot of "if (myid==abc)"?  

Thanks,

-Jian