A multi-threaded version of MCFM

Campbell, John M.; Ellis, R. Keith; Giele, Walter T.

doi:10.1140/epjc/s10052-015-3461-2

A multi-threaded version of MCFM

Campbell, John M.; Ellis, R. Keith; Giele, Walter T.

Authors

John M. Campbell

Professor Keith Ellis keith.ellis@durham.ac.uk
Emeritus Professor

Walter T. Giele

Abstract

We report on our findings modifying MCFM using OpenMP to implement multi-threading. By using OpenMP, the modified MCFM will execute on any processor, automatically adjusting to the number of available threads. We modified the integration routine VEGAS to distribute the event evaluation over the threads, while combining all events at the end of every iteration to optimize the numerical integration. Special care has been taken that the results of the Monte Carlo integration are independent of the number of threads used, to facilitate the validation of the OpenMP version of MCFM.

Citation

Campbell, J. M., Ellis, R. K., & Giele, W. T. (2015). A multi-threaded version of MCFM. The European Physical Journal C, 75(6), Article 246. https://doi.org/10.1140/epjc/s10052-015-3461-2

Journal Article Type	Article
Acceptance Date	May 14, 2015
Online Publication Date	Jun 3, 2015
Publication Date	Jun 3, 2015
Deposit Date	Jul 11, 2018
Publicly Available Date	Jul 17, 2018
Journal	European Physical Journal C: Particles and Fields
Print ISSN	1434-6044
Electronic ISSN	1434-6052
Publisher	SpringerOpen
Peer Reviewed	Peer Reviewed
Volume	75
Issue	6
Article Number	246
DOI	https://doi.org/10.1140/epjc/s10052-015-3461-2

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© The Author(s) 2015 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3.