Contribution to a conference proceedings/Internal Report

PUBDB-2015-05361

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png cuLGT: Lattice Gauge Fixing on GPUs

Vogt, H. ; Schröck, M.

2015
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-05/31

Report No.: DESY-PROC-2014-05

Abstract: We adopt CUDA-capable Graphic Processing Units (GPUs) for Landau, Coulomb and maximally Abelian gauge fixing in 3+1 dimensional SU(3) and SU(2) lattice gauge field theories. A combination of simulated annealing and overrelaxation is used to aim for the global maximum of the gauge functional. We use a fine grained degree of parallelism to achieve the maximum performance: instead of the common 1 thread per site strategy we use 4 or 8 threads per lattice site. Here, we report on an improved version of our publicly available code (www.cuLGT.com) which again increases performance and is much easier to include in existing code. On the GeForce GTX 580 we achieve up to 470 GFlops (utilizing 80% of the theoretical peak bandwidth) for the Landau overrelaxation co

Keyword(s): gauge fixing: abelian ; lattice ; numerical calculations ; numerical methods: performance ; site ; gauge field theory: SU(N) ; Coulomb ; gauge field theory: SU(3) ; SU(2) ; microprocessor: graphics ; Landau gauge

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Contributing Institute(s):

1. Bibliothek und Dokumentation (L)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. HERA: H1

Appears in the scientific report 2015

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Proceedings/Internal Report Bonati, C. (Editor) ; D'Elia, M. (Editor) ; Lamanna, G. (Editor) ; Sozzi, M. (Editor)
Proceedings, GPU Computing in High-Energy Physics (GPUHEP2014) : Pisa, Italy, September 10-12, 2014
2014GPU Computing in High-Energy Physics, GPUHEP2014, PisaPisa, Italy, 10 Sep 2014 - 12 Sep 20142014-09-102014-09-12 Hamburg : Deutsches Elektronen-Synchrotron, DESY (2014) [10.3204/DESY-PROC-2014-05]2014     Files BibTeX | EndNote: XML, Text | RIS

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