SIMSCRIPT

SIMSCRIPT is a free-form, English-like general-purpose simulation language conceived by Harry Markowitz and Bernard Hausner at the RAND Corporation in 1962. It was implemented as a Fortran preprocessor on the IBM 7090^[1]^[2] and was designed for large discrete event simulations. It influenced Simula.^[3]

Though earlier versions were released into the public domain, SIMSCRIPT was commercialized by Markowitz's company, California Analysis Center, Inc. (CACI), which produced proprietary versions SIMSCRIPT I.5^[4]^[5] and SIMSCRIPT II.5.

SIMSCRIPT II.5

SIMSCRIPT II.5^[6]^[7] was the last pre-PC 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.^[8]^[9]

SIMSCRIPT II.5 is a powerful, free-form, English-like, general-purpose simulation programming language. It supports the application of software engineering principles, such as structured programming and modularity, which impart orderliness and manageability to simulation models.^[10]

SIMSCRIPT III

SIMSCRIPT III^[11] Release 4.0 was available by 2009,^[12] and by then it ran on Windows 7, SUN OS and Linux and has object-oriented features.^[13]

By 1997, SIMSCRIPT III already had a GUI interface to its compiler.^[14] The latest version is Release 5; earlier versions already supported 64-bit processing.^[15]

PL/I implementation

A PL/I implementation was developed during 1968–1969, based on the public domain version released by RAND corporation.^[16]

References

^ Kelton, W. (2016). Simulation With Arena. ISBN 978-1467273411. SIMSCRIPT … was implemented as a Fortran preprocessor on the IBM 7090
^ Simulation With Arena.
^ Kristen Nygaard (1978). "The Development of the SIMULA Languages" (PDF). The development of … SIMULA I and SIMULA 67 … were influenced by the design of SIMSCRIPT …
^ M. E. Kuhl. "The SIMSCRIPT III Programming Language for Modular Object …" (PDF). … and was followed by SIMSCRIPT I.5 from CACI in 1965
^ "A Look Back in Time: The CACI Story".
^ Philip J Kiviat (January 1973). Simscript II.5: Programming language. Consolidated Analysis Centers.
^ Edward C. Russell (1983). Building simulation models with SIMSCRIPT II.5. ISBN 9780918417008.
^ 1988 magazine quote: "today used principally by the U. S. military."
^ William G. Shepherd Jr. (September 1988). "Market Value – PCs on Wall Street". PC Computing. pp. 150–157.
^ Russell, Edward C. (1983). Building Simulation models with SIMSCRIPT II.5. Los Angeles: CACI.
^ The SIMSCRIPT III programming language. Proceedings of the Winter Simulation Conference, 2005. doi:10.1109/WSC.2005.1574302. S2CID 8577001. SIMSCRIPT III is a programming language for discrete-event simulation. It is a major extension of its predecessor, SIMSCRIPT II.5, providing full support for …
^ "SIMSCRIPT III Object-Oriented, Modular, Integrated software development tool". simscript.com.
^ Harry M. Markowitz (2009). Selected Works. World Scientific. p. 152. ISBN 978-9814470216. I told Ana Marjanski, who headed the SIMSCRIPT III project, that SIMSCRIPT already has entities, attributes plus sets. She explained that the clients want object …
^ "SIMSCRIPT III User's Manual" (PDF). June 26, 1997. Archived from the original (PDF) on 2020-11-24.
^ "CACI Products". Retrieved March 12, 2019.
^ Jack Belzer; Albert G. Holzman; Allen Kent (1979). Encyclopedia of Computer Science and Technology: Volume 13. ISBN 978-0824722630. SIMSCRIPT. This PL/I based version, first developed in 1968–1969 … of SIMSCRIPT I, particularly in large simulations at The RAND Corporation