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Auto-scaling to minimize cost and meet application deadlines in cloud workflows

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2 Author(s)
Ming Mao ; Dept. of Comput. Sci., Univ. of Virginia, Charlottesville, VA, USA ; Humphrey, M.

A goal in cloud computing is to allocate (and thus pay for) only those cloud resources that are truly needed. To date, cloud practitioners have pursued schedule-based (e.g., time-of-day) and rule-based mechanisms to attempt to automate this matching between computing requirements and computing resources. However, most of these "auto-scaling" mechanisms only support simple resource utilization indicators and do not specifically consider both user performance requirements and budget concerns. In this paper, we present an approach whereby the basic computing elements are virtual machines (VMs) of various sizes/costs, jobs are specified as workflows, users specify performance requirements by assigning (soft) deadlines to jobs, and the goal is to ensure all jobs are finished within their deadlines at minimum financial cost. We accomplish our goal by dynamically allocating/deallocating VMs and scheduling tasks on the most cost-efficient instances. We evaluate our approach in four representative cloud workload patterns and show cost savings from 9.8% to 40.4% compared to other approaches.

Published in:

High Performance Computing, Networking, Storage and Analysis (SC), 2011 International Conference for

Date of Conference:

12-18 Nov. 2011