[OMPI users] MPI_THREAD_MULTIPLE hang

Hi, I see what looks like a bug in openmpi involving the MPI_THREAD_MULTIPLE. When we call MPI_Init_thread with this argument, this 61-line example hangs: http://www.slac.stanford.edu/~cpo/mpi_one_sided.cc There are some commented out lines in that file that we can use to workaround the

[OMPI users] progressing passive-sync RMA operations

Hi, I'm using openmpi 1.8.1 and could use some brief advice on RMA with passive synchronization. I've been trying to use that synchronization because I can't guarantee that the two ranks that are communicating have matching pairs of Start/Complete Post/Wait required by active synchronization.