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Physics > Computational Physics

arXiv:1602.07242 (physics)
[Submitted on 23 Feb 2016 (v1), last revised 26 Feb 2016 (this version, v2)]

Title:Making extreme computations possible with virtual machines

Authors:J. Reuter, B. Chokoufe, T. Ohl
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Abstract:State-of-the-art algorithms generate scattering amplitudes for high-energy physics at leading order for high-multiplicity processes as compiled code (in Fortran, C or C++). For complicated processes the size of these libraries can become tremendous (many GiB). We show that amplitudes can be translated to byte-code instructions, which even reduce the size by one order of magnitude. The byte-code is interpreted by a Virtual Machine with runtimes comparable to compiled code and a better scaling with additional legs. We study the properties of this algorithm, as an extension of the Optimizing Matrix Element Generator (O'Mega). The bytecode matrix elements are available as alternative input for the event generator WHIZARD. The bytecode interpreter can be implemented very compactly, which will help with a future implementation on massively parallel GPUs.
Comments: 5 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:1411.3834
Subjects: Computational Physics (physics.comp-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph)
Report number: DESY 16-034
Cite as: arXiv:1602.07242 [physics.comp-ph]
  (or arXiv:1602.07242v2 [physics.comp-ph] for this version)
  https://doi.org/10.48550/arXiv.1602.07242
Related DOI: https://doi.org/10.1088/1742-6596/762/1/012071

Submission history

From: Bijan Chokoufe Nejad [view email]
[v1] Tue, 23 Feb 2016 17:24:58 UTC (824 KB)
[v2] Fri, 26 Feb 2016 18:02:02 UTC (824 KB)
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