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Method for managing energy consumption for multiprocessor systems using an offline phase for characterization of a variation of a potential rate of parallelism for task scheduling and an online phase for detection and exploitation of potential inactivity intervals
Method for managing energy consumption for multiprocessor systems using an offline phase for characterization of a variation of a potential rate of parallelism for task scheduling and an online phase for detection and exploitation of potential inactivity intervals
The invention relates to a method for the on-line management of energy consumption for multiprocessor systems, the method executing at least one application according to a chart of tasks, wherein the method includes, for each application: a first phase for the off-line characterization of the variation of the potential rate of parallelism of execution of the tasks as a function of time, this characterization being based on the worst-case task execution times; and a second phase for the on-line detection and exploitation of the inactivity intervals and of the potential time excesses. A DPM technique makes it possible to determine the duration of the inactivity interval during which a processor may remain inactive according to the potential rate of parallelism characterized in the worst case.
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