Developing performance portable plasma edge simulations: A survey

Heterogeneous architectures are increasingly common in modern High -Performance Computing (HPC) systems. Achieving high-performance on such heterogeneous systems requires new approaches to application development that are able to achieve the three Ps: Performance, Portability, and Productivity. In this paper, we provide an overview of the state-of-the-art for developing high-performance, portable and productive multi -physics applications with particular focus on the simulation of a plasma fusion reactor. Simulating such a complex system relies on both fluid- and particle -based simulations, and coupling interfaces between these two domains. We also review the current state-of-the-art in reasoning about the performance, portability and productivity of HPC applications.