40th International Workshop on High Energy Density Physics with Intense Ion and Laser Beams

Started in 2013, the electromagnetic PIC code SMILEI has achieved significant progress, both on the physics and performance aspects. To match its open-source and community-driven approach, it is now well documented and has a user-friendly design. New physics modules include collisions, ionization, radiation reaction, multiphoton Breit-Wheeler pair creation, an envelope model for laser-plasma ponderomotive interaction, and cylindrical geometry with azimuthal Fourier decomposition. High scalability and performance are ensured with a hybrid shared/distributed-memory parallel computation, a space-filling-curve dynamic load-balancing technique, and a novel, efficient adaptive vectorization method. Particle merging and splitting processes bring additional control on the performance. These aspects will be reviewed. Large-scale simulations relevant to laser-plasma interaction, particle acceleration or astrophysics, and performed by the SMILEI community will also be presented.