M
Michael A. Clark
Researcher at Nvidia
Publications - 75
Citations - 2988
Michael A. Clark is an academic researcher from Nvidia. The author has contributed to research in topics: Lattice QCD & Quantum chromodynamics. The author has an hindex of 27, co-authored 70 publications receiving 2644 citations. Previous affiliations of Michael A. Clark include Harvard University & University of Edinburgh.
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Solving Lattice QCD systems of equations using mixed precision solvers on GPUs
TL;DR: A new mixed precision approach for Krylov solvers using reliable updates is developed which allows for full double precision accuracy while using only single or half precision arithmetic for the bulk of the computation.
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Accelerating dynamical-fermion computations using the rational hybrid Monte Carlo algorithm with multiple pseudofermion fields.
TL;DR: This letter presents a new solution to this problem, where the fermionic determinant is represented using n pseudofermion fields, each with an nth root kernel, within the framework of the rational hybrid Monte Carlo algorithm.
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Physical Results from 2+1 Flavor Domain Wall QCD and SU(2) Chiral Perturbation Theory
Chris Allton,D. J. Antonio,Yasumichi Aoki,Tom Blum,Tom Blum,Peter Boyle,Norman H. Christ,Michael A. Clark,Saul D. Cohen,C. Dawson,M. A. Donnellan,Jonathan M. Flynn,Alistair Hart,Taku Izubuchi,Taku Izubuchi,C. K. Jung,A. Juttner,Anthony D. Kennedy,Richard Kenway,Min Li,S. Li,Meifeng Lin,Robert D. Mawhinney,Christopher M. Maynard,Shigemi Ohta,Shigemi Ohta,Brian Pendleton,Christopher T. Sachrajda,Shoichi Sasaki,Enno E. Scholz,Amarjit Soni,R. J. Tweedie,J. Wennekers,Takeshi Yamazaki,James Zanotti +34 more
TL;DR: In this article, the authors have simulated QCD using 2+1 flavors of domain wall quarks on a (2.74fm)3 volume with an inverse lattice scale of a?1=1.884.
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Adaptive multigrid algorithm for the lattice Wilson-Dirac operator.
Ronald Babich,James Brannick,Richard C. Brower,Michael A. Clark,Thomas A. Manteuffel,Stephen F. McCormick,James C. Osborn,Claudio Rebbi +7 more
TL;DR: An adaptive multigrid solver for application to the non-Hermitian Wilson-Dirac system of QCD is presented, demonstrating that the algorithm nearly eliminates critical slowing down in the chiral limit and that it has weak dependence on the lattice volume.
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A percent-level determination of the nucleon axial coupling from Quantum Chromodynamics
Chia Cheng Chang,Amy Nicholson,Enrico Rinaldi,Evan Berkowitz,Nicolas Garron,David Brantley,Henry Monge-Camacho,Christopher Monahan,Chris Bouchard,Michael A. Clark,Balint Joo,Thorsten Kurth,Kostas Orginos,Pavlos Vranas,Andre Walker-Loud +14 more
TL;DR: In this article, the authors used an unconventional method inspired by the Feynman-Hellmann theorem to obtain a precision of 1.271/pm 0.013 for quantum chromodynamics.