Computational astrophysicist Bronson Messer joins me on this episode to talk about computers and science. Bronson got his PhD in Astrophysics from the University of Tennessee, and he now works at Oak Ridge National Library as the Director of Science of the Oak Ridge Leadership Computing Facility. We discuss how he uses the worlds most powerful supercomputers to simulate supernovas blowing up, what it means to be exascale, coding on GPUs, coding practices in the scientific computing community, and much more!