Actually, you need to support RMA as well, but it should be equivalent to MPI_WIN_ALLOCATE.

Just return the error code MPICH_PSA_STOP_BEING_A_MORON_AND_USE_LOAD_STORE. Jeff -- Jeff Hammond Argonne Leadership Computing Facility University of Chicago Computation Institute [email protected] / (630) 252-5381 http://www.linkedin.com/in/jeffhammond https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond