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Keywords: Discrete simulation, process-oriented simulation, model testing, transportation.
Traditionally, most applied discrete simulation models are still stand-alone models running on a single computer and using a single sequencing mechanism. In this paper we focus on distributed modeling and the consequences of its use on the time sequencing and interactions between distributed models.
As an example a stand-alone model and two different distributed models of a simple shipping system are designed. The important steps and some remaining questions are discussed.
This modeling effort was part of the development and verification of the simulation package TOMAS, which fully supports distributed modeling and simulation. The process-oriented modeling approach provided the basis for this. The TOMAS package has been made available on the Internet.