Warp-X: a new exascale computing platform for beam-plasma simulations

TL;DR

Warp-X is a new exascale computing platform designed for high-fidelity, large-scale plasma accelerator simulations, integrating advanced software components to leverage future supercomputers.

Contribution

The paper introduces Warp-X, a novel plasma simulation code optimized for exascale computing, combining PICSAR, AMReX, and Warp components for enhanced performance.

Findings

Development of Warp-X code for exascale plasma simulations

Integration of PICSAR and AMReX with Warp for improved scalability

Early application examples demonstrating code capabilities

Abstract

Turning the current experimental plasma accelerator state-of-the-art from a promising technology into mainstream scientific tools depends critically on high-performance, high-fidelity modeling of complex processes that develop over a wide range of space and time scales. As part of the U.S. Department of Energy's Exascale Computing Project, a team from Lawrence Berkeley National Laboratory, in collaboration with teams from SLAC National Accelerator Laboratory and Lawrence Livermore National Laboratory, is developing a new plasma accelerator simulation tool that will harness the power of future exascale supercomputers for high-performance modeling of plasma accelerators. We present the various components of the codes such as the new Particle-In-Cell Scalable Application Resource (PICSAR) and the redesigned adaptive mesh refinement library AMReX, which are combined with redesigned elements of the Warp code, in the new WarpX software. The code structure, status, early examples of applications and plans are discussed.