Sim

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Simulator, which can mean either:

• Sim node (or sim host), the physical server machine simulating one or more regions.
• Sim processes, the processes running on the server machines that simulate regions.

The latter usage is more precsise, because multiple processes may run on a single server CPU. In common usage, "sim" may also be used to mean region, though this meaning is deprecated because it is ambiguous.

Most accurately, a region is simulated by a sim process running on a sim node.