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Poster - Using All Processor Cores While Being Confident about Timing

November 2020 Poster
Bjorn Andersson

Researchers address the problem of verifying timing of software executing on a multicore processor, assuming that the resources in the memory system are unknown.


Software Engineering Institute


Complex, cyber-physical Department of Defense (DoD) systems, such as aircraft, depend on correct timing to properly and reliably execute crucial sensing, computing, and actuation functions. Any timing failure can have disastrous consequences; a large unexpected delay translating sensor data into actuation can cause system instability and loss of control. What’s more, the complexity of today’s DoD systems has increased the demand for use of multicore processors because unicore chips are either unavailable or not up to the task. However, concerns about timing have led to the practice of disabling all processor cores except one. In this project, CMU SEI researchers describe efforts to develop a solution to overcome this obstacle.