SUPERCOMPUTING

Computational astrophysics and cosmology has advanced considerably in four decades, starting with simulations having only a few thousand particles or cells with just gravitational or hydrody- namic interactions to state-of-the-art simulations with hundreds of billions to trillions of resolution elements having several different types of interactions. To simulate the Universe with supercom- puters, we solve the nonlinear physics of gravity, fluid dynamics, and radiative transfer to model the evolution of dark matter, gas, and radiation. Physically-motivated models for the formation of stars, blackholes, and galaxies as well as supernova, active galactic nuclei, and radiative feedback also have to be included. I am currently developing and applying a meshfree finite-volume particle method (FVPM) hydro code for astrophysical and cosmological simulations.