Am 21.09.2010 um 10:19 schrieb Ashley Pittman: > On 20 Sep 2010, at 22:24, Mikael Lavoie wrote: >> I wanna know if it exist a implementation that permit to run a single host >> process on the master of the cluster, that will then spawn 1 process per -np >> X defined thread at the host specified in the host list. The host will then >> act as a syncronized sender/collecter of the work done. > > I don't fully understand you explanation either but I may be able to help > clear up what you are asking for: > > If you mean "pthreads" or "linux threads" then no, you cannot have different > threads on different nodes under any programming paradigm.
There are some efforts like http://www.kerrighed.org/wiki/index.php/Main_Page, but for the current release the thread migration is indeed disabled. -- Reuti > However if you mean "execution threads" or in MPI parlance "ranks" then yes, > under OpenMPI each "rank" will be a separate process on one of the nodes in > the host list, as Jody says look at MPI_Comm_Spawn for this. > > Ashley, > > -- > > Ashley Pittman, Bath, UK. > > Padb - A parallel job inspection tool for cluster computing > http://padb.pittman.org.uk > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
