Hi, I'm implementing a new MTL component that uses message queues to keep track of posted and unexpected messages. I intended to do this by creating two global queues, one for posted and one for unexpected, until I found that the portals MTL uses a different approach in their queue implemenation. The portal code uses handles to the queues from inside their mca_mtl_portals_module_t to post messages. I couldn't help but wonder, why are the queue handles here? What are the design implications of defining these handle queues in this module struct rather than globally defining them? I'm an Open MPI newbie and sort of confused on the modular approach taken here and was hoping somebody could point out the pros and the cons of the two approaches. I guess my next question would be: In general, what would you put into a module struct and what wouldn't you? I will appreciate any pointers that you could give me to help me understand this concept.
Thanks in advance, Sajjad Tabib
