Fig. 4.

Parallel simulation performance with increasing numbers of Matlab workers (i.e. parallel processes). Top row model initialisation times for a the 9 881 neuron model and b the 123,517 neuron model. Bottom simulation times for 1 s of biological time for c the 9,881 neuron model and d the 123,517 neuron model. Thick black lines indicate linear speed scaling; legends indicate the number of electrodes used in each simulation run. The sub-linear speed-up in the small model is due to the decreasing relative performance influence of code vectorisation for smaller matrices (see “Results”)