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. Author manuscript; available in PMC: 2014 Dec 8.
Published in final edited form as: Nucl Technol. 2011 Jul;175(1):16–21. doi: 10.13182/nt11-a12263

TABLE II.

Aggregated Speedup SAgg and Efficiency εAgg in GEANT4-Based Monte Carlo Simulations Using the Medical Grid for 200-MeV Proton Distributions for Prostate Cancer*

Job Set Size
(Number of Cores)		 Subjob Size
(protons/core)		 τ(h)
25 × 106 Protons		 TP
(h)		 SAgg εAgg εA εW
50 500 000 434.9 10.47 41.54 0.83 0.79 0.93
75 333 333 434.9 8.86 49.09 0.65 0.74 0.83
100 250 000 434.9 7.90 55.05 0.55 0.67 0.79
150 166 667 434.9 5.79 75.12 0.50 0.63 0.69
200 125 000 434.9 4.28 101.61 0.54 0.59 0.55
250 100 000 434.9 3.26 133.4 0.53 0.58 0.59
*

Respectively, εA and εW are efficiencies of the clusters Antaeus and Weland shown in Table I.