By the same authors

Feedback-Based Admission Control for Firm Real-Time Task Allocation with Dynamic Voltage and Frequency Scaling

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JournalComputers
DateAccepted/In press - 13 Apr 2018
DatePublished (current) - 16 Apr 2018
Issue number2
Volume7
Number of pages19
Pages (from-to)1-19
Original languageEnglish

Abstract

Feedback-based mechanisms can be employed to monitor the performance of Multiprocessor Systems-on-Chips (MPSoCs) and steer the task execution even if the exact knowledge of the workload is unknown a priori. In particular, traditional proportional-integral controllers can be used with firm real-time tasks to either admit them to the processing cores or reject in order not to violate the timeliness of the already admitted tasks. During periods with a lower computational power demand, dynamic voltage and frequency scaling (DVFS) can be used to reduce the dissipation of energy in the cores while still not violating the tasks’ time constraints. Depending on the workload pattern and weight, platform size and the granularity of DVFS, energy savings can reach even 60% at the cost of a slight performance degradation.

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© 2018, The Author(s).

    Research areas

  • feedback, admission control, firm real-time, DVFS, MPSoC, task allocation

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