Abstract: A multi-processor synchronized simulation system that incorporates a common control element which generates common start frame messages for the various simulating systems. A start frame message will not be transmitted by the control element until all entity data from a prior frame has been sent to the appropriate simulation system. Each respective system, in response to the start frame message, then executes its next interval of frame processing and issues a frame complete message to the control element. The element in turn issues a subsequent start frame message only when all of the simulation systems have provided a respective frame complete message.