The effect of load imbalances on the performance of Monte Carlo algorithms in LWR analysis.

Authors: 
A. R. Siegel, K. Smith, P. K. Romano, B. Forget, and K. Felker.
Name of Publication: 
Journal of Computational Physics
Type of Publication: 
Journal
Abstract: 
A model is developed to predict the impact of particle load imbalances on the performance of domain-decomposed Monte Carlo neutron transport algorithms. Expressions for upper bound performance ''penalties'' are derived in terms of simple machine characteristics, material characterizations and initial particle distributions. The hope is that these relations can be used to evaluate tradeoffs among different memory decomposition strategies in next generation Monte Carlo codes, and perhaps as a metric for triggering particle redistribution in production codes.
URL of Published Paper: 
http://www.sciencedirect.com/science/article/pii/S0021999112003191?v=s5
Volume: 
235
Page Numbers: 
901-911
DOI: 
http://dx.doi.org/10.1016/j.jcp.2012.06.012
Published Date: 
February, 2013
Research Areas: