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001049804 005__ 20260108204824.0
001049804 0247_ $$2doi$$a10.22323/1.466.0280
001049804 0247_ $$2datacite_doi$$a10.34734/FZJ-2025-05588
001049804 037__ $$aFZJ-2025-05588
001049804 041__ $$aEnglish
001049804 1001_ $$0P:(DE-HGF)0$$aAltherr, Anian$$b0
001049804 1112_ $$aThe 41st International Symposium on Lattice Field Theory$$cLiverpool$$d2024-07-28 - 2024-08-03$$gLATTICE 2024$$wUK
001049804 245__ $$aO(a)-improved QCD+QED Wilson Dirac operator on GPUs
001049804 260__ $$c2025
001049804 29510 $$aProceedings of The 41st International Symposium on Lattice Field Theory
001049804 300__ $$a28
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001049804 4900_ $$aProceedings of Science
001049804 520__ $$aMarkov Chain Monte Carlo simulations of lattice Quantum Chromodynamics (QCD) are the onlyknown tool to investigate non-perturbatively the theory of the strong interaction and are requiredto perform precision tests of the Standard Model of Particle Physics. As the Markov Chain isa serial process, the sole option for improving the sampling rate is accelerating each individualupdate step. Heterogeneous clusters of GPU-accelerated nodes offer large total memory bandwidthwhich can be used to speed-up our application, openQxD-1.1, which is dominated by inversionsof the Dirac operator, a large sparse matrix. In this work we investigate offloading the inversionto GPU using the lattice-QCD library QUDA, and our early results demonstrate a significantpotential speed-up in the time-to-solution for state-of-the-art problem sizes. Minimal extensionsto the existing QUDA library are required for our specific physics programme while greatlyenhancing the performance portability of our code and retaining the reliability and robustness ofexisting applications in openQxD-1.1. Our new interface will enable us to utilize pre-exascaleinfrastructure and reduce the systematic uncertainty in our physics predictions by incorporatingthe effects of quantum electromagnetism (QED) in our simulations.
001049804 536__ $$0G:(DE-HGF)POF4-5111$$a5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511)$$cPOF4-511$$fPOF IV$$x0
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001049804 7001_ $$0P:(DE-HGF)0$$aCampos, Isabel$$b1
001049804 7001_ $$0P:(DE-HGF)0$$aColes, Jonathan$$b2
001049804 7001_ $$0P:(DE-Juel1)207074$$aCotellucci, Alessandro$$b3$$ufzj
001049804 7001_ $$0P:(DE-HGF)0$$aFernández De la Garza, Juan Antonio$$b4
001049804 7001_ $$0P:(DE-HGF)0$$aGruber, Roman$$b5$$eCorresponding author
001049804 7001_ $$0P:(DE-HGF)0$$aHarris, Tim$$b6
001049804 7001_ $$0P:(DE-HGF)0$$aKomijani, Javad$$b7
001049804 7001_ $$0P:(DE-HGF)0$$aLücke, Jens$$b8
001049804 7001_ $$0P:(DE-HGF)0$$aMaier, Stephanie$$b9
001049804 7001_ $$0P:(DE-HGF)0$$aMarinkovic, Marina$$b10
001049804 7001_ $$0P:(DE-HGF)0$$aParato, Letizia$$b11
001049804 7001_ $$0P:(DE-HGF)0$$aPatella, Agostino$$b12
001049804 7001_ $$0P:(DE-HGF)0$$aRosso, Sara$$b13
001049804 7001_ $$0P:(DE-HGF)0$$aTavella, Paola$$b14
001049804 7001_ $$0P:(DE-HGF)0$$aVogt, Hannes$$b15
001049804 773__ $$a10.22323/1.466.0280$$y2025
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001049804 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)207074$$aForschungszentrum Jülich$$b3$$kFZJ
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001049804 9141_ $$y2025
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