The GPSS—GASP combined (GGC) system

Each one of the popular discrete event simulation languages GPSS and GASP IV has a large user community. GPSS is probably the most widely used discrete event simulation language; it is appreciated for its ease of use and for the structural similarity of a GPSS model to the system it represents. GASP IV has provided (along with its successor, SLAM) a viable, well-documented system for combined continuous/discrete modeling and simulation. This paper presents the design and prototype development of a simulation language system called GGC, based upon a combination of GPSS and GASP IV. The new language system seeks to provide the “best of both worlds” in supporting the use of a GASP-based continuous mode in conjunction with GPSS use for discrete event modeling. An example of GGC use in a combined continuous/discrete model is presented. Possible future approaches are suggested based on conclusions drawn.