General Purpose Simulation System (GPSS) (originally Gordon's Programmable Simulation System after creator Geoffrey Gordon. The name was changed when it was decided to release it as a product) is a discrete time simulation language, where a simulation clock advances in discrete steps. A system is modelled as transactions enter the system and are passed from one service (represented by blocs) to another. This is particularly well suited for problems such as a factory. It was popular in the late 1960s and early 1970s but is little used today. GPSS is less flexible than simulation languages such as Simula

Simula

Simula is a name for two programming languages, Simula I and Simula 67, developed in the 1960s at the Norwegian Computing Center in Oslo, by Ole-Johan Dahl and Kristen Nygaard...

 and SIMSCRIPT II.5

SIMSCRIPT II.5

SIMSCRIPT II.5 is the latest incarnation of SIMSCRIPT, one of the oldest computer simulation languages. Although military contractor CACI released it in 1971, it still enjoys wide use in large-scale military and air-traffic control simulations....

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See also simulation language

Simulation language

A computer simulation language describes the operation of a simulation on a computer. There are two major types of simulation: continuous and discrete event though more modern languages can handle combinations. Most languages also have a graphical interface and at least simple statistical gathering...

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External links

• Florea Ion is using GPSS
• Minuteman Software A company that provides some implementations. There is a free student version too.
• WebGPSS
• Wolverine Software GPSS/H version.