TimeWarp

Kyle Hayes ([email protected])
Thu, 19 Oct 1995 09:22:54 -0700

I did an internship at JPL working with TimeWarp back in 87-88. From
Joel Crisp's description, it sounds like the Bath University project
is a continuation of the JPL project. TimeWarp was designed to extract
concurrency from simulations. It was primarily used with hypercubes,
BBN Butterflies and other such parallel machines. When I dealt with
it, there was a testbed that would run on a bunch of networked Sun 3s.

I have not had much contact with the TimeWarp project since my
internship. However, I don't think that the ideas in it are particularly
useful for distributed VRML. The "virtual time" used in TimeWarp had
very little relation to wall-clock time. Vtime would move very strangely
compared to wall-clock time. I think that it would not be useful to try
to do rsal-time stuff with the vtime concept of TimeWarp.

Best,
Kyle

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