A Simulation Testbed based on Lightweight Processes

The S {. lightweight-process based system for simulating process interactions is an enhancement to the C programming language in the form of library primitives with sets of predeened data structures. The S {. system encapsulates an existing lightweight-process library to provide a discrete-event simulation environment supporting the process view. It was developed as a research testbed for investigating methods which support simulations eeciently. Easy extensions and modiications to the S {. system are a major design objective, accomplished through modularity and layering. This paper describes the system , our experiences with its implementation, and its applicability to simulation modeling. We report on performance measurements of diierent implementations of the simulation scheduler, and of diierent algorithms for simulating service disciplines.