The threshold of event simultaneity

Author

Wieland, Frederick

Author_Institution

Mitre Corp., McLean, VA, USA

fYear

1997

fDate

10-13 Jun 1997

Firstpage

56

Lastpage

59

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Parallel and Distributed Simulation, 1997., Proceedings., 11th Workshop on

Conference_Location

Lockenhaus

Print_ISBN

0-8186-7964-6

Type

conf

DOI

10.1109/PADS.1997.594586

Filename

594586