Titan Takes on the Universe: Large-Scale Cosmology Simulation of Universe Mines for Halos Where Galaxies are Born

A multi-institutional team led by researchers at the US Department of Energy´s (DoE) Argonne National Laboratory has achieved high scalability and sustained performance on three of the most powerful systems in the world: IBM Blue Gene/Q supercomputers Mira at Argonne and Sequoia at Lawrence Livermore National Laboratory, and the Cray XK7 system Titan at Oak Ridge National Laboratory. The team set benchmarks for the largest cosmological simulations to date on different high-performance computing architectures on the massively parallel, CPU-only system Sequoia and on the hybrid accelerated Titan. This article takes a closer look at a recent Titan run and the team that´s currently pushing the state of the art in precision cosmology with the goal of better understanding cosmic acceleration.