CRK-HACC: Hydrodynamic Simulations for Modern Cosmological Surveys

by Nicholas Frontiere (CPS)

Thursday Dec 15, 2022, 1:00 PM → 2:00 PM America/Chicago

Current and next-generation large-scale structure surveys of the Universe are providing detailed measurements at extremely low levels of statistical uncertainty, accompanied by high resolution data. Commensurate numerical simulations that capture the extensive dynamic range of cosmological scales are required to provide accompanying theoretical predictions. Simulating baryonic effects on structure formation, in particular, is increasingly important to sufficiently model cosmological probes within the constricting precision demanded. We will present the improvements of the CRK-HACC framework, an extension of the Hardware/Hybrid Accelerated Cosmology Code built to run performantly on modern GPU-accelerated supercomputers.  CRK-HACC incorporates a high order smoothed particle hydrodynamics solver that is designed to accurately model baryonic effects in cosmology simulations, and has recently been coupled to a set of galaxy formation models to study astrophysical feedback processes.