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Table 4 Performance on Titan

From: PKDGRAV3: beyond trillion particle cosmological simulations for the next era of galaxy surveys

Nodes \(\boldsymbol{N_{p}}\) Mpc TFlops Time/Particle
2 1.0 × 109 250 1.2 \( 125~\mbox{ns} \)
17 8.0 × 109 500 10.3 \( 14.7~\mbox{ns} \)
136 6.4 × 1010 1,000 82.2 \( 1.84~\mbox{ns} \)
266 1.3 × 1011 1,250 152.5 \( 1.00~\mbox{ns} \)
2,125 1.0 × 1012 2,500 1,230.3 \( 0.124~\mbox{ns} \)
7,172 3.4 × 1012 3,750 4,130.9 \( 0.0365~\mbox{ns} \)
11,390 5.4 × 1012 4,375 6,339.2 \( 0.0236~\mbox{ns} \)
18,000 8.0 × 1012 5,000 10,096.2 \( 0.0150~\mbox{ns} \)
  1. Total measured TFlops as well as the wall-clock time to calculate the forces for a single particle.