Try using the info parameter in MPI::Intracomm::Spawn().
In this structure, you can say in which hosts you want to spawn.
Info parameters for MPI spawn:
Hello,I'm working on a MPI application where I'm using OpenMPI instead of MPICH.In my "master" program I call the function MPI::Intracomm::Spawn which spawns "slave" processes. It is not clear for me how to spawn the "slave" processes over the network. Currently "master" creates "slaves" on the same host.If I use 'mpirun --hostfile openmpi.hosts' then processes are spawn over the network as expected. But now I need to spawn processes over the network from my own executable using MPI::Intracomm::Spawn, how can I achieve it?Thanks in advance for any help.Elena
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