Yes, I was interested in the example such as: http://www-unix.mcs.anl.gov/mpi/mpi-standard/mpi-report-2.0/node98.htm#Node98
The way I see it, there are litteraly two programs, a Manager program and a Worker program which is started by the manager (the example doesn't show if multiple workers are started by repeated calls to the spawn command). I unsderstand that MPI_COMM_WORLD is somewhat static but I am unclear as to how to communicate with future-spawned process... Is there an MPI_COMM_UNIVERSE that we can drop in place of the MPI_COMM_WORLD? It's also not clear who would be part of MPI_COMM_PARENT other than the process that spawned the worker. Well, I know I have some reading to perform on the whole dynamic/spawning process, my query was really to know if OpenMPI was up and ready in that field of MPI2. Thanks, Eric Le vendredi 7 juillet 2006 14:09, Edgar Gabriel a écrit : > Eric Thibodeau wrote: > > Hello all, > > > > Before I embark on a train that will run out of tracks, I wanted to > > get a WFF concerning the spwaning mechanisme in OpenMPI. The intent > > is that I would program a "simple" parallel application that would > > demonstrate the ability of recent MPI implementations (OpenMPI) to > > dynamically ADD or remove processes from the parallel task pool. Of > > course, any documentation concerning these new features would also be > > greatly appreciated ;) > > Open MPI supports spawning new processes as defined in the MPI-2 > specification, see e.g. > > http://www-unix.mcs.anl.gov/mpi/mpi-standard/mpi-report-2.0/mpi2-report.htm > > However, please note, that this does not modify MPI_COMM_WORLD. > MPI_COMM_WORLD is a static communicator which can not be changed, even > in Open MPI... > > Thanks > Edgar > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- Eric Thibodeau Neural Bucket Solutions Inc. T. (514) 736-1436 C. (514) 710-0517
