Performance of PCSIM. The time needed to simulate the Benchmark 2 (CUBA) network (1 ms synaptic delay, 0.1 ms time step) for 1 s of biological time (solid line) as well as the expected times (dashed line) are plotted against the number of machines (Intel Xeon, 3.4 Ghz, 2 Mb cache). The CUBA model was simulated for three different sizes: 4000 neurons and 3.2 × 105 synapses (stars), 10000 neurons and 2 × 106 synapses (circles), and 20000 neurons and 20 × 106 synapses (diamonds)