A multi-threaded version of MCFM
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 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.
- Authors:
-
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1221283
- Report Number(s):
- FERMILAB-PUB-15-043-T
Journal ID: ISSN 1434-6052; arXiv eprint number arXiv:1503.06182
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- European Physical Journal. C, Particles and Fields (Online)
- Additional Journal Information:
- Journal Name: European Physical Journal. C, Particles and Fields (Online); Journal Volume: 75; Journal Issue: 6; Journal ID: ISSN 1434-6052
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Campbell, John M., Ellis, R. Keith, and Giele, Walter T. A multi-threaded version of MCFM. United States: N. p., 2015.
Web. doi:10.1140/epjc/s10052-015-3461-2.
Campbell, John M., Ellis, R. Keith, & Giele, Walter T. A multi-threaded version of MCFM. United States. https://doi.org/10.1140/epjc/s10052-015-3461-2
Campbell, John M., Ellis, R. Keith, and Giele, Walter T. Wed .
"A multi-threaded version of MCFM". United States. https://doi.org/10.1140/epjc/s10052-015-3461-2. https://www.osti.gov/servlets/purl/1221283.
@article{osti_1221283,
title = {A multi-threaded version of MCFM},
author = {Campbell, John M. and Ellis, R. Keith and Giele, Walter T.},
abstractNote = {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.},
doi = {10.1140/epjc/s10052-015-3461-2},
journal = {European Physical Journal. C, Particles and Fields (Online)},
number = 6,
volume = 75,
place = {United States},
year = {Wed Jun 03 00:00:00 EDT 2015},
month = {Wed Jun 03 00:00:00 EDT 2015}
}
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