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As scientific applications generate and consume data at ever-increasing rates, scientific workflow systems that manage the growing complexity of analyses and data movement will increase in importance. The goal of our work is to improve the overall performance of scientific workflows by using policy to improve data staging into and out of computational resources. We developed a Policy Service that gives advice to the workflow system about how to stage data, including advice on the order of datadoi:10.1109/sc.companion.2012.29 dblp:conf/sc/ChervenakSCD12 fatcat:koxibtbh55d3rb4jij7qkg7nfy