Problems in the implementation of a combined continuous-discrete simulation language

Abstract

GSL (Generalized Simulation Language) is a combined continuous-discrete simulation language which permits the simulation of either type of system or a combin ation of the two. The combination leads to powerful new capabilities, including creating and dynamically controlling multiple instances of continuous systems, extensive control over execution and events, and extensive interprocess communication. These capabil ities in turn lead to implementation problems, primarily in the areas of scheduling of multiple continuous simulation blocks, control of interaction between simulation blocks, coordination with discrete blocks, and storage allocation. The resolution of these problems in the GSL implementation is described along with experience with typical problems.

GASP IV and the Simulation of Batch/Semicontinuous Operations: Single Train Process

“…A simulation language which can accommodate discrete events and operations, modelled as stochastic time delays, as well as continuous events and operations, modelled by algebraic or differential equations, is known as a combined simulation language. Combined simulation languages were first considered by Schoeffler and his co-workers Fahrland (1970) and Golden (1973), who produced several prototypes. Further development work was reported by Fruit et al (1974).…”