LAM/MPI General User's Mailing List Archives

Hi

My situation is the next one:

I have a MPI procces (master) that calls MPI_comm_spawn and generates several procces.(slaves)
The comunication among these procces is easy making an intercomunicator.
But my doubt is the next one:
When I creat a new master in the same console, this master generates other slaves.
Is possible to find the "slaves world" and send and receive messages from them.
Is this is possible, what is the best solution?
I can't use the mpirun -np X option.

thanks
Regards

Roberto