[OMPI users] PubSub and MPI

[Alberto Giannetti]

I am looking to use MPI in a publisher/subscriber context. Haven't  
found much relevant information online.
Basically I would need to deal with dynamic tag subscriptions from  
independent components (connectors) and a number of other issues. I  
can provide more details if there is an interest. Am also looking for  
more information on these calls:

MPI_Open_port
MPI_Publish_name
MPI_Comm_spawn_multiple
Any code example or snapshot would be great.