A general purpose systems simulator

In the course of his work the systems engineer is constantly faced with the problem of analyzing the performance of proposed systems configurations. He needs to design the operating conditions of the proposed system to give optimum performance and determine whether the configuration will meet the specifications laid down for the system. The performances of individual components of the system are usually well understood but, with the increasing size and complexity of systems, it has become very difficult to estimate the performance of the many possible combinations of components that need to be considered in the course of designing a, system.