Parallel Network Simulation under Distributed Genesis

We describe two major developments in the General Network Simulation Integration System (Genesis): the support for BGP protocol in large network simulations and distribution of the simulation memory among Genesis component simulations. Genesis uses a high granularity synchronization mechanism between parallel simulations simulating parts of a network. This mechanism uses checkpointed simulation state to iterate over the same time interval until convergence. It also replaces individual packet data for flows crossing the network partitions with statistical characterization of such flows over the synchronization time interval. We had achieved significant performance improvement over the sequential simulation for simulations with TCP and UDP traffic. However, this approach can not be used directly to simulate dynamic routing protocols that use underlying network for exchanging protocol information, as no packets are exchanged in Genesis between simulated network parts. We have develop...

• Type: Conference
• Year: 2003
• Where: PADS
• Authors: Boleslaw K. Szymanski, Yu Liu, Rashim Gupta
• Keywords: Genesis, Modelling And Simulation, Network Simulations, PADS 2003, Simulations