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18th Workshop on Parallel and Distributed Simulation, 2004. PADS 2004. (2004)
Kufstein, Austria
May 16, 2004 to May 19, 2004
ISSN: 1087-4097
ISBN: 0-7695-2111-8
pp: 181-188
Francesco Quaglia , Università di Roma "La Sapienza"
Roberto Beraldi , Università di Roma "La Sapienza"
The notion of temporal uncertainty, expressed as the possibility for an event to occur in an interval of simulation time, rather than at a specific instant, has been recently proposed and exploited in order to enhance the performance of parallel/distributed simulation systems. In this paper we propose the concept of "spatial uncertainty" expressed as the possibility for a simulation event to occur in one of a set of points within the simulated system space. How to handle/exploit space uncertain events in an optimistic simulation system is discussed. Also, experimental results for optimistic simulations of a Personal Communication System (PCS) modeled with space uncertain events are reported. These results show the ability of spatial uncertainty to increase the performance of the parallel simulation system by providing a more flexible approach to synchronization.

F. Quaglia and R. Beraldi, "Space Uncertain Simulation Events: Some Concepts and an Application to Optimistic Synchronization," 18th Workshop on Parallel and Distributed Simulation, 2004. PADS 2004.(PADS), Kufstein, Austria, 2004, pp. 181-188.
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