Conclusions –Research Challenges in Distributed Simulation
•Human behavior modeling
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•Simulation domain architectures
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•Abundant network bandwidth
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•Practical event management techniques
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Many simulations are driven by statistical distributions that characterize the average behavior of a system, but do not claim accuracy for individual events or small time intervals. These distributions do not model instantaneous behaviors of intelligent or reactive beings. We need techniques for inserting intelligent, reactive, unique human behavior in the virtual world.

It should be possible to develop an architecture that supports an entire domain of simulation systems, providing a large common pool of functionality.

Distributed simulations cannot exist without sufficient reliable communication bandwidths for delivering events and synchronizing execution of the entire system. This bandwidth is currently one of the limiting factors on the size of a distributed simulation. Since bandwidth is a problem for every internet based application, a lot of commercial research is being done in this direction.

A lot of research has been done to discover techniques for practical and efficient synchronization of distributed simulation processes. We must identify applications that are well served by the different modes of event management. Research needs to find a practical and valuable home in commercial, government and military simulation systems.

(Page at. al., 1999)