Let me see if I understand your question. You want to launch an initial MPI code using mpirun or as a singleton. This code will then determine available resources and use MPI_Comm_spawn to launch the "real" MPI job.
Correct? If so, then yes - you can do that. When you do the comm_spawn, you need to include an MPI_Info key of "add-host" that specifies the host(s) (comma-delimited list) to be used for launching the specified app. Or you can do "add-hostfile" - either or both are supported. On Feb 24, 2010, at 5:39 PM, Damien Hocking wrote: > Hi all, > > Does OpenMPI support dynamic process management without launching through > mpirun or mpiexec? I need to use some MPI code in a shared-memory > environment where I don't know the resources in advance. > > Damien > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
