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Ma T.,Nanjing University of Information Science and Technology | Chu Y.,Nanjing University of Information Science and Technology | Zhao L.,National Information Meteorological Center | Ankhbayar O.,Nanjing University of Information Science and Technology
IETE Technical Review (Institution of Electronics and Telecommunication Engineers, India) | Year: 2014

Cloud computing is a new distributed commercial computing model that aims at providing computational resources or services to users over a network in a low-cost manner. Resource allocation and scheduling (RAS) is the key focus of cloud computing, and its policy and algorithm have a direct effect on cloud performance and cost. This paper presents five major topics in cloud computing, namely locality-aware task scheduling; reliabilityaware scheduling; energy-aware RAS; Software as a Service (SaaS) layer RAS; and workflow scheduling. These five topics are then classified into three parts: performance-based RAS; cost-based RAS; and performance- and cost-based RAS. A number of existing RAS policies and algorithms are discussed in detail accordingly with regard to their given parameters. In addition, a comparative analysis of five identified problems with their representative algorithms is performed. Finally, some future research directions of cloud RAS are pointed out. Copyright © 2014 by the IETE. Source

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