The use of High Performance Computing (HPC) in commercial and consumer IT applications is becoming popular. HPC users need the ability to gain rapid and scalable access to high-end computing capabilities. Cloud computing promises to deliver such a computing infrastructure using data centers so that HPC users can access applications and data from a Cloud anywhere in the world on demand and pay based on what they use. However, the growing demand drastically increases the energy consumption of data centers, which has become a critical issue. High energy consumption not only translates to high energy cost which will reduce the profit margin of Cloud providers, but also high carbon emissions which are not environmentally sustainable. Hence, there is an urgent need for energy-efficient solutions that can address the high increase in the energy consumption from the perspective of not only the Cloud provider, but also from the environment. To address this issue, we propose near-optimal scheduling policies that exploit heterogeneity across multiple data centers for a Cloud provider. We consider a number of energy efficiency factors (such as energy cost, carbon emission rate, workload, and CPU power efficiency) which change across different data centers depending on their location, architectural design, and management system. Our carbon/energy based scheduling policies are able to achieve on average up to 25% of energy savings in comparison to profit based scheduling policies leading to higher profit and less carbon emissions.

Item Type:	Refereed Article
Keywords:	cloud computing, high performance computing (HPC), energy-efficient scheduling, dynamic voltage scaling (DVS), green IT
Research Division:	Information and Computing Sciences
Research Group:	Distributed computing and systems software
Research Field:	Distributed systems and algorithms
Objective Division:	Environmental Policy, Climate Change and Natural Hazards
Objective Group:	Mitigation of climate change
Objective Field:	Management of greenhouse gas emissions from information and communication services
UTAS Author:	Garg, SK (Dr Saurabh Garg)
ID Code:	93854
Year Published:	2011
Web of Science® Times Cited:	177
Deposited By:	Information and Communication Technology
Deposited On:	2014-08-19
Last Modified:	2014-12-08
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