NDLI: Temperature aware workload management in geo-distributed datacenters

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Temperature aware workload management in geo-distributed datacenters

Content Provider	ACM Digital Library
Author	Li, Baochun Xu, Hong Feng, Chen
Abstract	Datacenters consume an enormous amount of energy with significant financial and environmental costs. For geo-distributed datacenters, a workload management approach that routes user requests to locations with cheaper and cleaner electricity has been shown to be promising lately. We consider two key aspects that have not been explored in this approach. First, through empirical studies, we find that the energy efficiency of the cooling system depends directly on the ambient temperature, which exhibits a significant degree of geographical diversity. Temperature diversity can be used by workload management to reduce the overall cooling energy overhead. Second, energy consumption comes from not only interactive workloads driven by user requests, but also delay tolerant batch workloads that run at the back-end. The elastic nature of batch workloads can be exploited to further reduce the energy cost. In this work, we propose to make workload management for geo-distributed datacenters temperature aware. We formulate the problem as a joint optimization of request routing for interactive workloads and capacity allocation for batch workloads. We develop a distributed algorithm based on an m-block alternating direction method of multipliers (ADMM) algorithm that extends the classical 2-block algorithm. We prove the convergence and rate of convergence results under general assumptions. Trace-driven simulations demonstrate that our approach is able to provide 5%--20% overall cost savings for geo-distributed datacenters.
Starting Page	373
Ending Page	374
Page Count	2
File Format	PDF
ISBN	9781450319003
DOI	10.1145/2465529.2465539
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-06-17
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Distributed optimization Request routing Cooling efficiency Energy Geo-distributed datacenters Admm
Content Type	Text
Resource Type	Article

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