Hi drear!

         I’m new to openmpi, I just want to know, how can I add a new network device through btl, is there some function interfaces through implementing them that we can get my new network device.

         Can someone tell me, how openmpi to control which network to be selected when one process communicates with other process, to find out that question which part of the source code should I read?

                                                                                                                                                             --thanks a lot