Abstract
Abstract
We introduce CRK-HACC, an extension of the Hardware/Hybrid Accelerated Cosmology Code (HACC), to resolve gas hydrodynamics in large-scale structure formation simulations of the universe. The new framework couples the HACC gravitational N-body solver with a modern smoothed-particle hydrodynamics (SPH) approach called conservative reproducing kernel SPH (CRKSPH). CRKSPH utilizes smoothing functions that exactly interpolate linear fields while manifestly preserving conservation laws (momentum, mass, and energy). The CRKSPH method has been incorporated to accurately model baryonic effects in cosmology simulations—an important addition targeting the generation of precise synthetic sky predictions for upcoming observational surveys. CRK-HACC inherits the codesign strategies of the HACC solver and is built to run on modern GPU-accelerated supercomputers. In this work, we summarize the primary solver components and present a number of standard validation tests to demonstrate code accuracy, including idealized hydrodynamic and cosmological setups, as well as self-similarity measurements.
Funder
U.S. Department of Energy
DOE ∣ National Nuclear Security Administration
National Science Foundation
National Aeronautics and Space Administration
Space Telescope Science Institute
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Astronomy and Astrophysics
Cited by
5 articles.
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1. A Performance-Portable SYCL Implementation of CRK-HACC for Exascale;Proceedings of the SC '23 Workshops of The International Conference on High Performance Computing, Network, Storage, and Analysis;2023-11-12
2. Frontier: Exploring Exascale;Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis;2023-11-11
3. Experiences readying applications for Exascale;Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis;2023-11-11
4. Convergence of small scale Ly α structure at high-z under different reionization scenarios;Monthly Notices of the Royal Astronomical Society;2023-08-31
5. Improving initialization and evolution accuracy of cosmological neutrino simulations;Journal of Cosmology and Astroparticle Physics;2023-06-01