Meeting the Challenges of Modeling Astrophysical Thermonuclear Explosions: Castro, Maestro, and the AMReX Astrophysics Suite
M. Zingale, A. S. Almgren, M. G. Barrios Sazo, V. E. Beckner, J. B., Bell, B. Friesen, A. M. Jacobs, M. P. Katz, C. M. Malone, A. J. Nonaka, D. E., Willcox, W. Zhang
TL;DR
This paper introduces the AMReX astrophysics code suite, including Maestro and Castro, which are designed to simulate various stellar phenomena such as supernovae and X-ray bursts using adaptive mesh refinement on modern hardware.
Contribution
It presents the development and application of the AMReX suite, specifically Maestro and Castro, for modeling complex stellar explosions and convective flows with high computational efficiency.
Findings
Codes enable detailed investigation of stellar phenomena
Efficient on many-core and GPU architectures
Support modeling of supernovae and X-ray bursts
Abstract
We describe the AMReX suite of astrophysics codes and their application to modeling problems in stellar astrophysics. Maestro is tuned to efficiently model subsonic convective flows while Castro models the highly compressible flows associated with stellar explosions. Both are built on the block-structured adaptive mesh refinement library AMReX. Together, these codes enable a thorough investigation of stellar phenomena, including Type Ia supernovae and X-ray bursts. We describe these science applications and the approach we are taking to make these codes performant on current and future many-core and GPU-based architectures.
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