The International Conference for High Performance Computing, Networking, Storage, and Analysis
The International Conference for High Performance Computing, Networking, Storage, and Analysis
Workshop: ESPM2 2022: Seventh International Workshop on Extreme Scale Programming Models and Middleware
Authors: Martin Schulz (Technical University Munich)
Abstract: The Message Passing Interface (MPI) is the most dominant programming model on HPC systems and has been instrumental in developing efficient, large scale parallel applications. However, it has a rather static view of compute resources building on top of the concept of immutable communicators. While this provides some easy-of-use and simplicity, it is limiting, in particular for modern workflow-based workloads as well as in its support for resource adaptive systems. The newly introduced concept of MPI Sessions, however, opens the door more dynamicity and adaptivity. In this talk I will highlight the opportunities that can arise from such directions and discuss a novel approaches we are pursuing as part of several EuroHPC projects. Our ultimate goal is to provide full malleability in MPI as well as the surrounding software layers - from system software to applications - and with that enable us to more efficiently harness the computational capabilities of current and future HPC systems.