Abstract: A discrete-event modeling and simulation language system was proposed. Program model, language specification, simulating support, compiler and simulating application of the language system were introduced. Primary users can directly and quickly build the simulation system. They can describe details of the models and connections between models by writing element and compound models. For good scalability and flexibility, advanced users can create and modify the element component by using C++ language. The language system screens the time management and information distributing for users, which require high simulating ability. Components can be loaded by the simulating engine, which can run on high performance computer. The engine supports dynamic variable-structure, parallel computing between multi-cores and multi-nodes, and has the dynamic load balance ability.

Key words: discrete-event modeling and simulation language, program model, language specification, compiler, simulating engine