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Abstract-Cloud computing is a paradigm shift in service delivery that promises a leap in efficiency and flexibility in using computing resources. As cloud infrastructures are widely deployed around the globe, many data-and computeintensive scientific workflows have been moved from traditional highperformance computing platforms and grids to clouds. With the rapidly increasing number of cloud users in various science domains, it has become a critical task for the cloud service provider todoi:10.12720/jcm.9.4.312-321 fatcat:6ljhc3hsqrfkjkcisbnaqeee4e