The Ninth International Workshop on Numerical Analysis and Lattice QFT (QCDNA)

Europe/London
Higgs Centre for Theoretical Physics

Higgs Centre for Theoretical Physics

School of Physics and Astronomy The University of Edinburgh Peter Guthrie Tait Road Edinburgh, EH8 9BT United Kingdom
Oliver Witzel (University of Edinburgh)
Description
Numerical simulations of Quantum Chromodynamics (QCD) are well established and a state-of-the-art method to obtain nonperturbative predictions from the Standard Model (SM) of elementary particle physics. These predictions are crucial to complement the experimental research program at the LHC or at the future Belle II experiment. In order to fully leverage the experimental results, uncertainties of the theoretical predictions need to be at most of the same size and thus have to keep track with ongoing experimental improvements, higher luminosities, and refined detectors. In order to further reduce uncertainties of lattice QCD simulations, algorithmic improvements are required and our simulations codes need to account for the changes in the design of the next generation of supercomputers. This workshop aims to bring together the leading experts in algorithms and hardware specific optimisation in order to discuss new paradigms and methods required for future machines as well as challenges of simulations with physical light and heavy quarks on larger and finer lattices. In addition we aim to facilitate collaborations among the participants with the intention to agree on common interfaces allowing for higher portability of code packages.
    • 08:30 09:00
      Registration, Tea, and Coffee 30m
    • 09:00 09:55
      The Anatomy of a Calculation of epsilon' 55m
      Speaker: Norman Christ
      Slides
    • 10:00 10:25
      Heavy Quarks with Domain-Wall Fermions 25m
      Speaker: Tobias Tsang
      Slides
    • 10:30 10:55
      Simplifying HEP software deployment using Containers Technology 25m
      Speaker: Isabel Campos
      Slides
    • 11:10 11:40
      Tea and coffee break 30m
    • 11:40 12:35
      Nim for LQCD and tuning force-gradient integrators for 8 flavor nHyp HMC 55m
      Speaker: James Osborn
      Slides
    • 12:40 13:40
      Lunch 1h
    • 13:40 14:35
      Deflation as a Method of Variance Reduction for Estimating the Trace of a Matrix Inverse 55m
      Speaker: Andreas Stathopoulos
      Slides
    • 14:40 15:35
      Bounds on Eigenpairs in the interior of Krylov Spaces 55m
      Speaker: Tony Kennedy
      Slides
    • 15:40 16:10
      Tea and coffee break 30m
    • 16:10 17:05
      Fundamentals of Fermions on Simplicial Lattices 55m
      Speaker: Richard Brower
      Slides
    • 17:10 17:35
      A Massive Momentum-Subtraction Scheme 25m
      Speaker: Ava Khamseh
      Slides
    • 17:45 18:45
      Poster and discussion
    • 18:45 19:00
      Poster and discussion: Towards using the GRID as a low level library / Some tips on BiCGstab
      Convener: Issaku Kanamori
    • 19:00 19:15
      Poster and discussion: True Multigrid for 5d Chiral Fermions
      Conveners: Azusa Yamaguchi, Peter A. Boyle
    • 19:15 19:30
      Poster and discussion: Lattice QCD on NVIDIA P100 and DGX-1
      Convener: Kate Clark
    • 19:30 19:45
      Poster and discussion: Domain Wall Fermion Simulations with the Exact One-Flavor Algorithm
      Convener: David Murphy
    • 19:45 20:00
      Poster and discussion: pMR: A high-performance communication library
      Conveners: Daniel Richtmann, Peter Georg, Tilo Wettig
    • 09:00 09:55
      DD-alpha AMG on QPACE 2 & Inducing QCD with two bosonic flavors 55m
      Speaker: Tilo Wettig
      Slides
    • 10:00 10:55
      NSPT near the continuum limit 55m
      Speaker: Martin Lüscher
      Slides
    • 11:00 11:30
      Tea and coffee break 30m
    • 11:30 11:55
      Lattice QCD on Non-Orientable Manifolds I -- Gauge Fields 25m
      Speaker: Simon Mages
      Slides
    • 12:00 12:25
      Lattice QCD on Non-Orientable Manifolds II -- Fermions 25m
      Speaker: Balint Toth
      Slides
    • 12:30 13:30
      Lunch 1h
    • 13:30 14:25
      Multigrid for QCD 55m
      Speaker: James Brannick
      Slides
    • 14:30 15:25
      (QUDA / multigrid) 55m
      Speaker: Kate Clark
      Slides
    • 15:30 16:00
      Tea and coffee break 30m
    • 16:00 16:25
      The DD-alpha AMG Solver Library 25m
      Speaker: Matthias Rottmann
      Slides
    • 16:30 16:55
      Domain Wall Fermion Simulations with the Exact One-Flavor Algorithm 25m
      Speaker: David Murphy
      Slides
    • 17:00 17:40
      Discussion
    • 19:00 21:00
      Dinner 2h Nelson Room (St. Leonards Hall)

      Nelson Room

      St. Leonards Hall

    • 09:00 09:25
      A Jacobi Davidson Method with a Multigrid Solver for the Hermitian Wilson-Dirac Operator 25m
      Speaker: Artur Strebel
      Slides
    • 09:30 09:55
      Adaptive Aggregation based Domain Decomposition Multigrid for Twisted Mass Fermions 25m
      Speaker: Simone Bacchio
      Slides
    • 10:00 10:25
      AMG for Staggered Fermions - Progress Report 25m
      Speaker: Matthias Rottmann
      Slides
    • 10:30 10:55
      (staggered multigrid) 25m
      Speaker: Alexei Strelchenko
      Slides
    • 11:00 11:30
      Tea and Coffee Break 30m
    • 11:30 12:25
      grid / HDCR 55m
      Speaker: Peter Boyle
      Slides
    • 12:25 12:45
      Towards using the GRID as a low level library/ Some tips on BiCGstab 20m
      Speaker: Issaku Kanamori
      Slides
    • 12:45 13:35
      Lunch 50m
    • 13:40 14:35
      Performance Portability for Lattice QCD Towards Exascale 55m
      Speaker: Meifeng Lin
      Slides
    • 14:35 15:10
      Exploring KNL Performance of the MILC Code 35m
      Speaker: Steve Gottlieb
      Slides
    • 15:10 15:30
      MILC Staggered CG Performance on Intel KNL 20m
      Speaker: Ruizi Li
      Slides
    • 15:30 16:00
      Tea and coffee break 30m
    • 16:00 16:55
      Baryogenesis, novel CP violation and the neutron electric dipole moment on the lattice 55m
      Speaker: Rajan Gupta
      Slides
    • 17:00 18:00
      Discussion and end of meeting
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