Technological advances have resulted in the design of large integrated circuits, and with it the need for fast simulation to decrease the design-to-market time. Parallel and distributed digital simulation has been recognized as the leading approach to provide fast simulation of digital circuits. The Time Warp Mechanism (T W M ) implement:? the concept of Virtual Time t o optimistically synchronize parallel simulation. However, the successful utili.ration of the Time Warp mechanism has been plagued by the time and space overheads of rollback, namely: state saving, state restoration, and event reprocessing. Several optimizations to reduce these overheads have been proposed in the literature. This paper presents empirical data relating the effectiveness of several of these Optimizations to the domain of digital system simulation. In particular, we present performcince results from lazy reevaluation, lazy cancellation, periodic state savings, and bounded time windows.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.