Introduction to GPSS

  • Authors:
  • Thomas J. Schriber

  • Affiliations:
  • -

  • Venue:
  • WSC '77 Proceedings of the 9th conference on Winter simulation - Volume 1
  • Year:
  • 1977

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Abstract

GPSS(General Purpose Simulation System) is a simulation programming language whose use greatly eases the task of building computer models for discrete-event simulations. (A discrete event simulation is one in which the state of the system being simulated changes at only a discrete, but possibly random, set of time points, called event times.) GPSS le[?]s itself especially well to the modeling of queuing systems, but it is generally applicable when it is of interest to determine now well a service organization will respond to the demands placed in it. For example, GPSS has been applied to the modeling of telephone companies, brokerage firms, computing centers, supermarkets, manufacturing shops, banks, steel mills, hotels, warehouse and distribution facilities, and general business (to examine the flow of information through a business, and assess its impact on operations performance). GPSS is easier to learn than the statement-oriented simulation languages such as GASP(8) and SIMSCRIPT (9). It is less flexible than the statement oriented languages, however, even though it can be interfaced with Fortran subroutines (for examples, see (2) and (6) ), and PL/1 procedures. A thorough-going comparison of GPSS and SIMSCRIPT has been presented in (5).