Hi there.

I'm developing a distributed system with a communication layer based on Open MPI. As part of my project, I have to create a process scheduler. So I decided to use the MPI_Spawn function to dynamically create (it is an requirement of the system) the process across the cluster's nodes.

Is there some way to specify how many copies of a process to spawn to each node? For instance, I want to spawn 5 copies of a mpi program to 3 nodes usin the scheme bellow:

obs.: I am using openmpi-1.5.3. The default policies provided by the ompi is not applicable to my problem because I will decide the scheme based on specific criteria.

Thanks in advance.

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Rodrigo Silva Oliveira
M.Sc. Student - Computer Science
Universidade Federal de Minas Gerais
www.dcc.ufmg.br/~rsilva