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DTSTAMP:20210402T160104Z
LOCATION:Track 2
DTSTART;TZID=America/New_York:20201119T130000
DTEND;TZID=America/New_York:20201119T133000
UID:submissions.supercomputing.org_SC20_sess148_pap560@linklings.com
SUMMARY:Preparing Nuclear Astrophysics for Exascale
DESCRIPTION:Paper\n\nPreparing Nuclear Astrophysics for Exascale\n\nKatz, 
 Almgren, Barrios Sazo, Eiden, Gott...\n\nAstrophysical explosions such as 
 supernovae are fascinating events that require sophisticated algorithms an
 d substantial computational power to model. Castro and MAESTROeX are nucle
 ar astrophysics codes that simulate thermonuclear fusion in the context of
  supernovae and X-ray bursts. Examining these nuclear burning processes us
 ing high resolution simulations is critical for understanding how these as
 trophysical explosions occur. In this paper we describe the changes that h
 ave 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 the new science that is possible to model on systems such 
 as Summit and Perlmutter, which could not have been achieved with the prev
 ious generation of supercomputers.\n\nTag: Applications, Extreme Scale Com
 puting, Mixed-precision\n\nRegistration Category: Tech Program Reg Pass
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