Keywords and Synonyms
Dynamic speed scaling
Problem Definition
This problem is concerned with scheduling jobs with as little energy as possible by adjusting the processor speed wisely. This problem is motivated by dynamic voltage scaling (DVS) (or speed scaling) technique, which enables a processor to operate at a range of voltages and frequencies. Since energy consumption is at least a quadratic function of the supply voltage (hence CPU frequency/speed), it saves energy to execute jobs as slowly as possible while still satisfying all timing constraints. The associated scheduling problem is referred to as min-energy DVS scheduling. Previous work showed that min-energy DVS schedule can be computed in cubic time. The work of Li and Yao [7] considers the discrete model where the processor can only choose its speed from a finite speed set. This work designs an \( O(dn\log n) \) two-phase algorithm to compute the min-energy DVS schedule for the discrete model (drepresents the number of...
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Li, M. (2008). Voltage Scheduling. In: Kao, MY. (eds) Encyclopedia of Algorithms. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-30162-4_466
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DOI: https://doi.org/10.1007/978-0-387-30162-4_466
Publisher Name: Springer, Boston, MA
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