Overlapping Communication and Computation with ExaMPI's Strong Progress and Modern C++ Design

ExaMPI is a modern, C++17+ Mpi implementation designed for modularity, extensibility, and understandability. In this work, we overview functionality new to ExaMPI since its initial release, including Libfabric-based network transport support. We also explain our rationale for why and how we choose to add new MPI features (and defer others). Lastly, we measured the latency of the aforementioned tra...