JGPSS, An open source GPSS framework to teach simulation

GPSS has been used for years to teach simulation. Different tools following the GPSS syntax exist. Usually these tools can be used to construct simulation models helping in the teaching of simulation. However no available framework is capable to simplify the development of a complete simulation tool following the GPSS syntax. This paper presents JGPSS, a framework based in Java language that can be used by students to build a complete simulation tool following the GPSS syntax. JGPSS has two versions, one capable to perform simulations and obtain statistical information, and other designed as a framework for students of computer sciences. This last framework, described in this paper, lacks in the implementation of the main simulation engine algorithms or the related structures. This framework allows the computer science student to reach a deeper understanding of how to construct a complete process interaction simulation engine, the paradigm that GPSS follows.