On the use of tally servers in Monte Carlo simulations of light-water reactors
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Forget_On the use.pdf
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123.14 KB
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Checksum (MD5)
a0201f85841da6e3a79ee1d470749694
Author(s)
Siegel, Andrew
Romano, Paul Kollath
Forget, Benoit Robert Yves
Smith, Kord S.
Date Issued
June 2014
Journal
SNA + MC 2013 - Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo
Publisher
EDP Sciences
Citation
Romano, Paul K. et al. “On the Use of Tally Servers in Monte Carlo Simulations of Light-Water Reactors.” Ed. D. Caruge et al. EDP Sciences, 2014. 04301.
Version
Author's final manuscript
Abstract
An algorithm for decomposing tally data in Monte Carlo simulations using servers has recently been proposed and analyzed. In the present work, we make a number of refinements to a theoretical performance model of the tally server algorithm to better predict the performance of a realistic reactor simulation using Monte Carlo. The impact of subdividing fuel into annular segments on parameters of the performance model is evaluated and shown to result in a predicted overhead of less than 20% for a PWR benchmark on the Mira Blue Gene/Q supercomputer. Additionally, a parameter space study is performed comparing tally server implementations using blocking and non-blocking communication. Non-blocking communication is shown to reduce the communication overhead relative to blocking communication, in some cases resulting in negative overhead.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1051/snamc/201404301
