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
editSIMSCRIPT 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
editSIMSCRIPT 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
editA PL/I implementation was developed during 1968–1969, based on the public domain version released by RAND Corporation.[16]
See also
editReferences
edit- ^ 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 2025-08-07.
- ^ "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
External links
edit- CACI SIMSCRIPT page
- History of Programming Languages: SIMSCRIPT
- Oral history interview with Harry M. Markowitz, Charles Babbage Institute, University of Minnesota - Markowitz discusses his development of portfolio theory, sparse matrices, and his work at the RAND Corporation and elsewhere on simulation software development (including computer language SIMSCRIPT), modeling, and operations research.