muttley + openmpi-1.10.4 + openib does not support threads
openmpi-1.10.4 (compiled with thread support!) + openib fails immediately in MPI_Init_thread without even printing the message
"mpi does not seem to have thread support. There might be issues with e.g. threaded IO"
- works with self, tcp
- works when changing MPI_Init_thread to MPI_Init