Mixed-Criticality Scheduling Upon Unreliable Processors

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Provided by: University of North Carolina
Topic: Hardware
Format: PDF
An unreliable processor is characterized by two execution speeds: a normal speed and a degraded speed. Under normal circumstances it will execute at its normal speed; unexpected conditions may occur during run-time that causes it to execute more slowly (but no slower than at its degraded speed). The problem of executing an integrated workload, consisting of some more important components and some less important ones, upon such an unreliable processor is considered. It is desired that all components execute correctly under normal circumstances, whereas the more important components should execute correctly (although the less important components need not) if the processor runs at any speed no slower than its specified degraded speed.
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