Title :
The threshold of event simultaneity
Author :
Wieland, Frederick
Author_Institution :
Mitre Corp., McLean, VA, USA
Abstract :
We revisit the notion of event simultaneity in the context of parallel and distributed simulation. Although the simulation community has recognized this problem for years, it has focused mainly on the mechanics of breaking event-time ties and has neither measured its extent nor considered its implications. Exant simulators (both serial and parallel) prohibit simultaneity either by user-specified event priorities or by an arbitrary (but well-documented) tie-breaking mechanism. We show, theoretically and empirically, that these strategies may lead to an invalid simulation. In doing so, we introduce the threshold of event simultaneity and use it to understand the semantics of simultaneity
Keywords :
digital simulation; parallel programming; distributed simulation; event-time ties; exant simulators; parallel simulation; threshold of event simultaneity; tie-breaking mechanism; user-specified event priorities; Aerospace simulation; Airports; Computational modeling; Concurrent computing; Context modeling; Delay effects; Discrete event simulation; Error correction; Mechanical variables measurement; Processor scheduling;
Conference_Titel :
Parallel and Distributed Simulation, 1997., Proceedings., 11th Workshop on
Conference_Location :
Lockenhaus
Print_ISBN :
0-8186-7964-6
DOI :
10.1109/PADS.1997.594586
