Hi, I want to trace when the MPI library prevents an MPI_Send from going to the socket and makes it access shared memory because the target node is on the same chip (CMP). I want to use PIN to trace this. Can you please give me some pointers about which functions are taking this decision so that I can instrument the appropriate library calls in PIN?
Regards, -- Shamik Ganguly 2nd year, MS (CSE-Hardware), University of Michigan, Ann Arbor B.Tech.(E&ECE), IITKGP (2008) P.S.- I am resending this since I had posted this from a different email id from what I subscribed with, I hope there is no duplication.
