• Publications
  • Influence
Dynamic right-sizing for power-proportional data centers
TLDR
We prove that the optimal offline algorithm for dynamic right-sizing has a simple structure when viewed in reverse time, and this structure is exploited to develop a new ‘lazy’ online algorithm, which is proven to be 3-competitive. Expand
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Renewable and cooling aware workload management for sustainable data centers
  • Zhenhua Liu, Y. Chen, +5 authors C. Hyser
  • Computer Science
  • SIGMETRICS '12
  • 11 June 2012
TLDR
This work reduces electricity cost and environmental impact using a holistic approach that integrates renewable supply, dynamic pricing, and cooling supply including chiller and outside air cooling, with IT workload planning. Expand
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Online algorithms for geographical load balancing
It has recently been proposed that Internet energy costs, both monetary and environmental, can be reduced by exploiting temporal variations and shifting processing to data centers located in regionsExpand
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Greening geographical load balancing
TLDR
Energy expenditure has become a significant fraction of data center operating costs. Expand
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Greening Geographical Load Balancing
TLDR
We show that if the price of electricity is proportional to the instantaneous fraction of the total energy that is brown, geographical load balancing significantly reduces brown energy use. Expand
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Classifying scheduling policies with respect to unfairness in an M/GI/1
TLDR
In this paper we define three types of unfairness and demonstrate large classes of scheduling policies that fall into each type. Expand
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Peer Effects and Stability in Matching Markets
TLDR
In this paper we make the observation that peer effects are often the result of underlying social connections, and we explore a formulation of the many-to-one matching market wherepeer effects are derived from an underlying social network. Expand
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Power-Aware Speed Scaling in Processor Sharing Systems
TLDR
This paper studies how to optimally scale speed to balance mean response time and mean energy consumption under processor sharing scheduling. Expand
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Open Versus Closed: A Cautionary Tale
TLDR
We show that closed and open system models yield significantly different results, even when both models are run with the same load and service demands. Expand
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Geographical load balancing with renewables
TLDR
We perform a trace-based study to evaluate three issues related to achieving this goal: the impact of geographical load balancing, the role of storage, and the optimal mix of renewables. Expand
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