An event-driven parallel queue-based microsimulation for large scale traffic scenarios

Traffic flow microsimulations are interesting for transport planning problems due to their high temporal and spatial resolution. Unfortunately, most of them involve high computational costs making them impractical for running large scale scenarios. We present a parallel microsimulation software that uses queue-based link dynamics together with event processing instead of time-steps. By introducing appropriate load balancing and by minimizing interfaces between processors to reduce communication needs as far as possible, our simulator requires only 87 seconds on 64 processors to simulate a 24 hours test scenario with 7 million simulated person days on a network with 28k links. D. Charypar, K. W. Axhausen, K. Nagel 4