Computational Physics on the new Frontier

The Oak Ridge Leadership Computing Facility (OLCF) at Oak Ridge National Laboratory (ORNL) is home to the first exascale supercomputer in the nation, Frontier. Powered by AI-Optimized AMD EPYC CPUs with Radeon Instinct GPUs, Frontier enables extreme-scale simulations in computational physics, including ones involving complex fluid flow, at unprecedented resolutions and performance. In this talk, we share early results of applications with fluid dynamics components and discuss the computational techniques to achieve them on Frontier. We consider how machine learning techniques may be used to accelerate parts of computations, and describe how a leadership computing facility enables access to the massive data sets produced by these simulations.