Title: JiST: Java in Simulation Time for Scalable Simulation of Mobile Ad hoc Networks Speaker: Rimon Barr Date: Wednesday, 24 September 2003 Wireless ad hoc networks is an active area of research that is, for fundamental reasons, dependent on simulation. Yet, existing simulation approaches for modelling the behaviour of wireless ad hoc networks are often unsatisfactory. They severely limit the possible scale, level of detail and duration of the simulation results. The JiST project is aimed at advancing the state-of-the-art in this regard. JiST is a system designed for the efficient execution of discrete event simulation programs. It transforms a virtual machine (the Java Virtual Machine, in our case) into a simulation platform, thus merging the traditional systems and languages approaches to simulation. In this talk, I will explain the details of the "simulation time" transformation and the resulting programming model, as well as demonstrate both its flexibility and efficiency. I will also discuss SWANS, a wireless network simulator constructed atop JiST, and present some initial results.