Figure 4.

Efficiency of the hybrid simulation algorithm. The figure shows the empirical density of the ratios of execution times and memory usage of the full stochastic simulation and those of the hybrid simulation algorithm described in Algorithm 2.2. It is evident that the hybrid simulation algorithm is at least five times faster in terms of execution times and at least four times more efficient in terms of memory usage. The simulation set-up is the same as Figure 3. The performance evaluation of the hybrid simulation is done using the BenchmarkTools.jl package [54] in Julia language [46]