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The large-scale and inaccessibility of deployed wireless sensor networks mandate that the code installed in sensor nodes be rigorously tested prior to deployment. Such testing is primarily achieved using discrete event simulators designed to provide "High fidelity" simulation of the communications between nodes. Discrete event simulators, by their very nature, mask race conditions in the code since simulated interrupts never interrupt running code; an additional limitation of most such simulators is the requirement that all simulated nodes execute the same application code, at variance with common practice in actual deployments. Since both of these problems reduce confidence in the deployed system, the focus of this paper is to eliminate these problems via complete emulation of wireless sensor networks using virtualization techniques.
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