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Title: Three-dimensional discrete ordinates reactor assembly calculations on GPUs

Abstract

In this paper we describe and demonstrate a discrete ordinates sweep algorithm on GPUs. This sweep algorithm is nested within a multilevel comunication-based decomposition based on energy. We demonstrated the effectiveness of this algorithm on detailed three-dimensional critical experiments and PWR lattice problems. For these problems we show improvement factors of 4 6 over conventional communication-based, CPU-only sweeps. These sweep kernel speedups resulted in a factor of 2 total time-to-solution improvement.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Consortium for Advanced Simulation of LWRs (CASL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1185874
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: ANS M&C 2015 - Joint International Conference on Mathematics and Computation (M&C), Supercomputing in Nuclear Applications (SNA) and the Monte Carlo (MC) Method, Nashville, TN, USA, 20150419, 20150423
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS

Citation Formats

Evans, Thomas M, Joubert, Wayne, Hamilton, Steven P, Johnson, Seth R, Turner, John A, Davidson, Gregory G, and Pandya, Tara M. Three-dimensional discrete ordinates reactor assembly calculations on GPUs. United States: N. p., 2015. Web.
Evans, Thomas M, Joubert, Wayne, Hamilton, Steven P, Johnson, Seth R, Turner, John A, Davidson, Gregory G, & Pandya, Tara M. Three-dimensional discrete ordinates reactor assembly calculations on GPUs. United States.
Evans, Thomas M, Joubert, Wayne, Hamilton, Steven P, Johnson, Seth R, Turner, John A, Davidson, Gregory G, and Pandya, Tara M. 2015. "Three-dimensional discrete ordinates reactor assembly calculations on GPUs". United States.
@article{osti_1185874,
title = {Three-dimensional discrete ordinates reactor assembly calculations on GPUs},
author = {Evans, Thomas M and Joubert, Wayne and Hamilton, Steven P and Johnson, Seth R and Turner, John A and Davidson, Gregory G and Pandya, Tara M},
abstractNote = {In this paper we describe and demonstrate a discrete ordinates sweep algorithm on GPUs. This sweep algorithm is nested within a multilevel comunication-based decomposition based on energy. We demonstrated the effectiveness of this algorithm on detailed three-dimensional critical experiments and PWR lattice problems. For these problems we show improvement factors of 4 6 over conventional communication-based, CPU-only sweeps. These sweep kernel speedups resulted in a factor of 2 total time-to-solution improvement.},
doi = {},
url = {https://www.osti.gov/biblio/1185874}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}

Conference:
Other availability
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