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Simulating the weak death of the Neutron in a femtoscale universe with near-exascale computing

Authors:

Evan Berkowitz,

Enrico Rinaldi,

André Walker-Loud,

Chia Cheng Chang,

Thorsten Kurth,

Kostas OrginosAuthors Info & Claims

SC '18: Proceedings of the International Conference for High Performance Computing, Networking, Storage, and Analysis

Article No.: 55, Pages 1 - 9

https://doi.org/10.1109/SC.2018.00058

Published: 26 July 2019 Publication History

Abstract

The fundamental particle theory called Quantum Chromodynamics (QCD) dictates everything about protons and neutrons, from their intrinsic properties to interactions that bind them into atomic nuclei. Quantities that cannot be fully resolved through experiment, such as the neutron lifetime (whose precise value is important for the existence of light-atomic elements that make the sun shine and life possible), may be understood through numerical solutions to QCD. We directly solve QCD using Lattice Gauge Theory and calculate nuclear observables such as neutron lifetime. We have developed an improved algorithm that expoentially decreases the time-to-solution and applied it on the new CORAL supercomputers, Sierra and Summit. We use run-time autotuning to distribute GPU resources, achieving 20% performance at low node count. We also developed optimal application mapping through a job manager, which allows CPU and GPU jobs to be interleaved, yielding 15% of peak performance when deployed across large fractions of CORAL.

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Cited By

Eller PHoefler TGropp WEigenmann RDing CMcKee S(2019)Using performance models to understand scalable Krylov solver performance at scale for structured grid problemsProceedings of the ACM International Conference on Supercomputing10.1145/3330345.3330358(138-149)Online publication date: 26-Jun-2019
https://dl.acm.org/doi/10.1145/3330345.3330358
Zimmer CAtchley SPankajakshan RSmith BKarlin ILeininger MBertsch ARyujin BBurmark JWalker-Loud AClark MPearce OTaufer MBalaji PPeña A(2019)An evaluation of the CORAL interconnectsProceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis10.1145/3295500.3356166(1-18)Online publication date: 17-Nov-2019
https://dl.acm.org/doi/10.1145/3295500.3356166

Simulating the weak death of the Neutron in a femtoscale universe with near-exascale computing

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cover image ACM Conferences

SC '18: Proceedings of the International Conference for High Performance Computing, Networking, Storage, and Analysis

November 2018

932 pages

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SIGHPC: ACM Special Interest Group on High Performance Computing, Special Interest Group on High Performance Computing

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IEEE CS

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IEEE Press

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Published: 26 July 2019

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SC18

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SC18: The International Conference for High Performance Computing, Networking, Storage and Analysis

November 11 - 16, 2018

Texas, Dallas

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Cited By

Eller PHoefler TGropp WEigenmann RDing CMcKee S(2019)Using performance models to understand scalable Krylov solver performance at scale for structured grid problemsProceedings of the ACM International Conference on Supercomputing10.1145/3330345.3330358(138-149)Online publication date: 26-Jun-2019
https://dl.acm.org/doi/10.1145/3330345.3330358
Zimmer CAtchley SPankajakshan RSmith BKarlin ILeininger MBertsch ARyujin BBurmark JWalker-Loud AClark MPearce OTaufer MBalaji PPeña A(2019)An evaluation of the CORAL interconnectsProceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis10.1145/3295500.3356166(1-18)Online publication date: 17-Nov-2019
https://dl.acm.org/doi/10.1145/3295500.3356166

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