Computational Co-Design of a Scale-bridging Plasma Simulation Algorithm for Emerging Architectures

Los Alamos National Laboratory has recently initiated a new project on the topic of Computational Co-design of Multi-scale Algorithms in the Natural Sciences (CoCoMANS). We define computational co-design and the synergistic interaction of Application, Algorithms and Architectures to produce a new class of physics simulation capability. One of our focus application areas will be plasma physics, and one of the goals of the project will be to demonstrate a paradigm shift in plasma kinetic simulation on emerging, heterogeneous computer architectures. We are developing moment-based scale-bridging algorithms with the goal of enabling system scale simulation with self-consistent kinetic effects. These algorithms will be optimized with emerging heterogeneous computer architectures as the target computing platform. In this poster we discuss our computational co-design process, describe the aspects of the moment-based scale-bridging algorithms and the required solver for the stiff moment system. We will provide some algorithmic proof-of-principle, and we will demonstrate the implementation of the general scale-bridging algorithm on a heterogeneous architecture.