Making extreme computations possible with virtual machines

Making extreme computations possible with virtual machines

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 translat...

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Veröffentlicht in:Journal of physics. Conference series 2016-10, Vol.762 (1), p.12071
Hauptverfasser: Reuter, J, Nejad, B Chokoufe, Ohl, T
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Algorithms
Amplitudes
Physics
Virtual environments
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Nejad, B Chokoufe
Ohl, T
description 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.
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subjects Algorithms
Amplitudes
Physics
Virtual environments
title Making extreme computations possible with virtual machines
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