Sharing an MPI bootstrapped ucp hello world that I had written a while ago https://gist.githubusercontent.com/Akshay-Venkatesh/ec9fa444d870e08f6fde92fe9b70891d/raw/20f4e74152e39479fa0189ca8ea771879c857f7c/ucp_hello_world_mpi.c cc @shamisp @yosefe
