A multi-threaded version of MCFM

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

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

Title: A multi-threaded version of MCFM

Journal Article · Wed Jun 03 00:00:00 EDT 2015 · European Physical Journal. C, Particles and Fields (Online)

DOI:https://doi.org/10.1140/epjc/s10052-015-3461-2· OSTI ID:1221283

Campbell, John M. ^[1]; Ellis, R. Keith ^[1]; Giele, Walter T. ^[1]

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

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 then 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. Furthermore, we took special care so that the results of the Monte Carlo integration were independent of the number of threads used, to facilitate the validation of the OpenMP version of MCFM.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1221283

Report Number(s):: FERMILAB-PUB-15-043-T; arXiv eprint number arXiv:1503.06182

Journal Information:: European Physical Journal. C, Particles and Fields (Online), Vol. 75, Issue 6; ISSN 1434-6052

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 110 works

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References (6)

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