Department of Physics & Astronomy
University of New Mexico

Physics and Astronomy Colloquium

Understanding Stellar Explosions: A Problem for the World’s Most Powerful Computers

Presented by Bronson Messer (ORNL)

The first exascale computer, called Frontier, has been delivered to Oak Ridge National Laboratory this past year. This unique scientific instrument is the culmination of more than a decade of concerted effort. I will relate a bit of the history of hybrid-node computing at the Oak Ridge Leadership Computing Facility (OLCF) and how Frontier represents the latest iteration of that approach. Some details of Frontier’s architecture will be discussed, including an overview of the new AMD GPUs that provide the bulk of the computational power for Frontier. Then, we will take a look at a physics problem that represents the quintessential exascale endeavor: The explosion of core-collapse supernovae and their manifestations in photons, gravitational waves, and neutrinos. I will review some recent results and the promise for the future on Frontier and subsequent platforms.

Watch recording (UNM NetID required)

3:30 pm, Friday, August 25, 2023


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