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Accelerating Ab Initio Nucleon Structure Calculations with All-Mode-Averaging on Gordon

Published: 13 July 2014 Publication History

Abstract

The composition of nucleons has long been known to be sub-atomic particles called quarks and gluons, which interact through the strong force and theoretically can be described by Quantum Chromodynamics (QCD). Lattice QCD (LQCD), in which the continuous space-time is translated into grid points on a four-dimensional lattice and ab initio Monte Carlo simulations are performed, is by far the only model-independent method to study QCD with controllable errors. We report the successful application of a novel algorithm, All-Mode-Averaging, in the LQCD calculations of nucleon internal structure on the Gordon supercomputer our award of roughly 6 million service units through XSEDE. The application of AMA resulted in as much as a factor of 30 speedup in computational efficiency.

References

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R. C. Brower, H. Neff, and K. Orginos. Mobius fermions: Improved domain wall chiral fermions. Nucl.Phys.Proc.Suppl., 140:686--688, 2005.
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M. Lin. Nucleon Form Factors with 2+1 Flavors of Domain Wall Fermions and All-Mode-Averaging. PoS, LATTICE2013:275, 2013.
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H. Neff, N. Eicker, T. Lippert, J. Negele, and K. Schilling. Low fermionic eigenmode dominance in QCD on the lattice. Phys. Rev. D, 64(11):114509, 2001.
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R. Pohl, A. Antognini, F. Nez, F. D. Amaro, F. Biraben, et al. The size of the proton. Nature, 466:213--216, 2010.
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Y. Shamir. Chiral fermions from lattice boundaries. Nucl. Phys., B406:90--106, 1993.

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  1. Accelerating Ab Initio Nucleon Structure Calculations with All-Mode-Averaging on Gordon

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    Published In

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    XSEDE '14: Proceedings of the 2014 Annual Conference on Extreme Science and Engineering Discovery Environment
    July 2014
    445 pages
    ISBN:9781450328937
    DOI:10.1145/2616498
    • General Chair:
    • Scott Lathrop,
    • Program Chair:
    • Jay Alameda
    Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

    In-Cooperation

    • NSF: National Science Foundation
    • Drexel University
    • Indiana University: Indiana University

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    Association for Computing Machinery

    New York, NY, United States

    Publication History

    Published: 13 July 2014

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    Author Tags

    1. Lattice QCD
    2. Monte Carlo Simulations
    3. Nucleon Structure

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    XSEDE '14

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    XSEDE '14 Paper Acceptance Rate 80 of 120 submissions, 67%;
    Overall Acceptance Rate 129 of 190 submissions, 68%

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