HPCx performance on the polymer chain melt benchmark

Processors: 1 8 64 512
Fixed CPU secs: 3.42 0.408 0.0859 0.0466
Fixed || Efficiency: 100% 105% 62.2% 14.3%
Scaled CPU secs: 3.42 3.46 4.06 4.52
Scaled || Efficiency: 100% 98.8% 84.2% 75.7%