> The only change is that the receive callback is now occurring in the ORTE event thread, and so perhaps someone needs to look at a way to pass that back into the OMPI event base (which I guess is the OPAL event base)? Just glancing at the code, it looks like that could be the issue - but I honestly have no idea what event base someone wants to switch to, or if they want to resolve it some other way. There are clearly some things happening in the ofacm oob code that involve thread locking etc., but I don't know what those areas are trying to do.
I see. In this mode do you enable thread safety support in all library (mpi)?