U.S. Army ModSim on Jade's timewarp

In h&ty, 1991, Jade Simulations began work to develop an implementation of the U.S. Army’s ModSim simulation language on Jade’s TimeWarp. Incremental releases of that implementation were subsequently delivered to the U.S. Army, the most recent in June, 1992. This implementation represents the U.S. Army’s second attempt to port ModSim to a Time Wzq system. This implementation is the first involving Jade and Jade’s TimeWarp. In conjunction with Jade, the U.S. Army has begun porting a version of their Eagle combat simulation to the new implementation with encouraging preliminary results. Key modules of that simulation, collectively referred to as Core Eagle, have been ported and executed with typical speedups between 6 and 10 times on 32 processors, compared with identical, sequential executions of the same simulation. This paper summarizes the highlights of the reimplementation of ModSim and the Core Eagle performance study.