Jed, On 8/13/19 5:54 AM, Jed Brown via mpi-forum wrote: "Jeff Squyres \(jsquyres\) via mpi-forum" writes: Let me ask a simple question: how will users to write portable MPI programs in C with large count values? Answer: they will explicitly call MPI_Send_x(), and not rely on C11 _Generic.
On Aug 15 2019, Joseph Schuchart via mpi-forum wrote: On 8/13/19 5:54 AM, Jed Brown via mpi-forum wrote: Few packages will accept a hard dependency on MPI-4 for at least 10 years. MS-MPI still doesn't fully support MPI-2.1, for example, and PETSc only recently began requiring MPI-2.0. That