This paper presents in brief the history and research efforts used for the subsequent development of a high-speed simulator. A number of modern applications, ranging from medicine to space applications, use a common simulation infrastructure layer based on the Discrete Event Simulation (DES) ideas. However, the recent trends in computing will inevitably exploit the multicore characteristics of modern CPUs, thus enabling the field of Parallel Discrete Event Simulation (PDES) techniques, in order to establish high simulation speed.