An S_{N} Algorithm for Modern Architectures
Abstract
LANL discrete ordinates transport packages are required to perform large, computationally intensive timedependent calculations on massively parallel architectures, where even a single such calculation may need many months to complete. While KBA methods scale out well to very large numbers of compute nodes, we are limited by practical constraints on the number of such nodes we can actually apply to any given calculation. Instead, we describe a modified KBA algorithm that allows realization of the reductions in solution time offered by both the current, and future, architectural changes within a compute node.
 Authors:

 Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
 Publication Date:
 Research Org.:
 Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
 Sponsoring Org.:
 USDOE National Nuclear Security Administration (NNSA)
 OSTI Identifier:
 1312619
 Report Number(s):
 LAUR1626593
 Grant/Contract Number:
 AC5206NA25396
 Resource Type:
 Accepted Manuscript
 Country of Publication:
 United States
 Language:
 English
 Subject:
 97 MATHEMATICS AND COMPUTING
Citation Formats
Baker, Randal Scott. An SN Algorithm for Modern Architectures. United States: N. p., 2016.
Web. doi:10.2172/1312619.
Baker, Randal Scott. An SN Algorithm for Modern Architectures. United States. https://doi.org/10.2172/1312619
Baker, Randal Scott. Mon .
"An SN Algorithm for Modern Architectures". United States. https://doi.org/10.2172/1312619. https://www.osti.gov/servlets/purl/1312619.
@article{osti_1312619,
title = {An SN Algorithm for Modern Architectures},
author = {Baker, Randal Scott},
abstractNote = {LANL discrete ordinates transport packages are required to perform large, computationally intensive timedependent calculations on massively parallel architectures, where even a single such calculation may need many months to complete. While KBA methods scale out well to very large numbers of compute nodes, we are limited by practical constraints on the number of such nodes we can actually apply to any given calculation. Instead, we describe a modified KBA algorithm that allows realization of the reductions in solution time offered by both the current, and future, architectural changes within a compute node.},
doi = {10.2172/1312619},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {8}
}
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