CSIM19: a powerful tool for building system models

CSIM19 is the latest version of the system modeling toolkit from Mesquite Software. CSIM19 offers many features that enable a modeler to develop robust and realistic models of complex systems. These models represent the system as a collection of processes and resources; in most cases the processes mimic the behavior of the entities of the system as they compete for use of the system's resources. The paper presents CSIM19 and the new features in CSIM19. These features include new capabilities for managing processes at facilities, enhanced handling of messages at mailboxes, and performance improvements. Using the OptQuest optimization package with CSIM19 is also discussed. The article concludes with an extended example.