On Jul 28, 2008, at 12:03 PM, George Bosilca wrote:
Interesting. The self is only used for local communications. I don't expect that any benchmark execute such communications, but apparently I was wrong. Please let me know the failing test, I will take a look this evening.
FWIW, my manual tests of a simplistic "ring" program work for all combinations (openib, openib+self, openib+self+sm). Shrug.
But for OSU latency, I found that openib, openib+sm work, but openib+sm +self hangs (same results whether the 2 procs are on the same node or different nodes). There is no self communication in osu_latency, so something else must be going on.
-- Jeff Squyres Cisco Systems
