Fig. 1.
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Comparison between single node tracking rates using CPU- and GPU-only execution on Summit and Frontier for the fresh fuel version of the NuScale SMR problem. GPU results on Summit use a workload of 8.0 × 106 histories/cycle/GCD, and GPU results on Frontier use a workload of 2.8 × 107 histories/cycle/GCD. Total flux and fission rate were tallied on a 119 × 119 × 30 Cartesian mesh during active cycles.
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