A Hybrid Software Process Simulation Model for Project Management

This paper introduces a hybrid software process simulation model that combines two common approaches to simulation discrete event and system dynamics. The purpose of the model is to support software project estimation as well as project management. Although the model was originally constructed for a specific software organization, it's use was never realized by that project. The model has been modified to make it more generic in nature. The model described in this paper, while fully functional, is intended primarily to offer a concrete theoretical framework for a hybrid approach to modeling specific software development projects. The theoretical basis for the model is documented in detail. Then a few examples of the behavior of this model are illustrated for varying parameters. The model description is followed by a general discussion of the following issues: utility of the modeling approach, adaptability of the theoretical framework to project-specific conditions, important modeling considerations, and other issues. The paper offers an approach that a model developer can use as the framework for developing a realistic project-specific model.