A time warp mechanism based on temporal uncertainty

This paper describes a Time Warp mechanism designed to exploit temporal uncertainty (TU) in general distributed simulations. Novel in the proposed approach are: (a) a formal event model where events are assigned time intervals instead of usual punctual timestamps; (b) an aggressive cancellation technique which shifts overheads from communications to computation; and (c) an implementation in Java which deploys a framework for distributed simulations over the Internet. The paper reports some experimental results related to the application of the Time Warp mechanism to a large phone cellular model. The experiments confirm that TU is able to speedup simulation without compromising the accuracy of the results.