Exascale models of stellar explosions: Quintessential multi-physics simulation

Author:

Harris J. Austin1ORCID,Chu Ran2,Couch Sean M3456,Dubey Anshu78ORCID,Endeve Eirik29,Georgiadou Antigoni1,Jain Rajeev7,Kasen Daniel101112,Laiu M P9,Messer OE B1213,O’Neal Jared7,Sandoval Michael A2,Weide Klaus8

Affiliation:

1. National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA

2. Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, USA

3. Department of Physics and Astronomy, Michigan State University, East Lansing, MI, USA

4. Department of Computational Mathematics, Science, and Engineering, Michigan State University, East Lansing, MI, USA

5. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI, USA

6. Joint Institute for Nuclear Astrophysics–Center for the Evolution of the Elements, Michigan State University, East Lansing, MI, USA

7. Mathematics and Computer Science Division, Argonne National Laboratory, Lemont, IL, USA

8. Department of Computer Science, University of Chicago, Chicago, IL, USA

9. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA

10. Department of Physics, University of California, Berkeley, CA, USA

11. Department of Astronomy and Theoretical Astrophysics Center, University of California, Berkeley, , CA, USA

12. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA

13. Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA

Abstract

The ExaStar project aims to deliver an efficient, versatile, and portable software ecosystem for multi-physics astrophysics simulations run on exascale machines. The code suite is a component-based multi-physics toolkit, built on the capabilities of current simulation codes (in particular Flash-X and Castro), and based on the massively parallel adaptive mesh refinement framework AMReX. It includes modules for hydrodynamics, advanced radiation transport, thermonuclear kinetics, and nuclear microphysics. The code will reach exascale efficiency by building upon current multi- and many-core packages integrated into an orchestration system that uses a combination of configuration tools, code translators, and a domain-specific asynchronous runtime to manage performance across a range of platform architectures. The target science includes multi-physics simulations of astrophysical explosions (such as supernovae and neutron star mergers) to understand the cosmic origin of the elements and the fundamental physics of matter and neutrinos under extreme conditions.

Funder

Exascale Computing Project

Oak Ridge National Laboratory

Publisher

SAGE Publications

Subject

Hardware and Architecture,Theoretical Computer Science,Software

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1. Framework and Methodology for Verification of a Complex Scientific Simulation Software, Flash-X;2023 Congress in Computer Science, Computer Engineering, & Applied Computing (CSCE);2023-07-24

2. Application Experiences on a GPU-Accelerated Arm-based HPC Testbed;Proceedings of the HPC Asia 2023 Workshops;2023-02-27

3. The Impact of Resolution on Double-detonation Models for Type Ia Supernovae;The Astrophysical Journal;2022-09-01

4. Flash-X: A multiphysics simulation software instrument;SoftwareX;2022-07

5. Exo-intelligent Data-Driven Reconfigurable Computing Platform;Digital Transformation and the World Economy;2022

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