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Table 2 OpenMP Multithreading Speedup

From: Multilevel Parallelization of AutoDock 4.2

Threads Speedup % Ideal
serial 1.0× 100
1 0.9× 88
2 1.5× 75
4 3.0× 74
8 5.8× 72
16 11.3× 71
32 22.3× 70
  1. The speedup using OpenMP threads was calculated for 1 to 32 threads on a 3.3 GHz POWER7 p755 32-core server. A reference speed was calculated using mpAD4 compiled without OpenMP (serial). The numbers are scaled to a single serial docking run with the default benchmark parameters with modifications: ga_runs = 128, ga_num_evals = 5,000,000.