Abstract :
The building of Hierarchical Control Flow Graph (HCFG) Models of queueing systems is described by developing different model elements of queueing subsystems and then combining them into HCFG Models. A brief overview of HCFG Models, which is a new modeling paradigm for discrete event simulation, is presented. Conceptually, HCFG Models consist of a set of independent, encapsulated, concurrently operating model components where each component has its own thread of control and the components interact with each other solely via message passing. HCFG Models have two complementary types of hierarchical model specification structures to specify models; one to specify components and their interconnections and the other to specify component behaviors.