Master of Science in Computer Science
First Committee Member
Second Committee Member
Ajoy k. Datta
Third Committee Member
Fourth Committee Member
Number of Pages
We consider a device, which has states ON, OFF and fixed number of intermediate states.In the ON state the device uses full power whereas in the OFF state the device consumes no energy but a constant cost is associated with switching back to ON. Intermediate states use some fraction of energy proportional to the usage time but switching back to the ON state has a constant setup cost depending on the current state. Such systems are widely used to conserve energy, for example to speed scale CPUs, to control data centers, or to manage renewable energy.
We analyze such a system in terms of competitive analysis and give a heuristic for finding optimal online algorithms. We then use our approach to discuss five-state systems which are widely used in practice.
Five State Systems; Green Computing; Multi State Systems; Online Competitive Ratio; Power Down Problems
Pathak, Govind, "Analysis of Power-Down Systems with Five States" (2016). UNLV Theses, Dissertations, Professional Papers, and Capstones. 2722.