Preparing Nuclear Astrophysics for Exascale

Autor:	Katz, Max P., Almgren, Ann, Sazo, Maria Barrios, Eiden, Kiran, Gott, Kevin, Harpole, Alice, Sexton, Jean M., Willcox, Don E., Zhang, Weiqun, Zingale, Michael
Rok vydání:	2020
Předmět:	Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - High Energy Astrophysical Phenomena
Druh dokumentu:	Working Paper
Popis:	Astrophysical explosions such as supernovae are fascinating events that require sophisticated algorithms and substantial computational power to model. Castro and MAESTROeX are nuclear astrophysics codes that simulate thermonuclear fusion in the context of supernovae and X-ray bursts. Examining these nuclear burning processes using high resolution simulations is critical for understanding how these astrophysical explosions occur. In this paper we describe the changes that have been made to these codes to transform them from standard MPI + OpenMP codes targeted at petascale CPU-based systems into a form compatible with the pre-exascale systems now online and the exascale systems coming soon. We then discuss what new science is possible to run on systems such as Summit and Perlmutter that could not have been achieved on the previous generation of supercomputers. Comment: Accepted for publication at SC20
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2007.05218 Zobrazit plný text záznamu View this record from Arxiv