Two typical single-stage interconnection networks, the PM2I network and the cube network, have been simulated. For each simulation, the simulation algorithm, lower bound and upper bound have been showed. 对两种典型的单级互连网络&PM2I网络和立方体网络进行了模拟,每种模拟都给出了模拟算法以及精确的上界和下界值。