计算机专业外文翻译 云计算论述：模式对比和研究问题的一些思路.docVIP

计算机专业外文翻译--云计算论述：模式对比和研究问题的一些思路 A Tale of Clouds: Paradigm Comparisons and Some Thoughts on Research Issues*? Abstract Cloud computing is an emerging computing paradigm.It aims to share data, calculations, and services transparently among users of a massive grid. Although the industry has started selling cloud-computing products, research challenges in various areas, such as UI design, task decomposition, task distribution, and task coordination, are still unclear. Therefore, we study the methods to reason and model cloud computing as a step toward identifying fundamental research questions in this paradigm. In this paper, we compare cloud computing with service computing and pervasive computing. Both the industry and research community have actively examined these three computing paradigms. We draw a qualitative comparison among them based on the classic model of computer architecture. We finally evaluate the comparison results and draw up a series of research questions in cloud computing for future exploration. Keywords: cloud computing, paradigm comparison Cloud computing is a paradigm that focuses on sharing data and computations over a scalable network of nodes. Examples of such nodes include end user computers, datacenters, and Web Services. We term such a network of nodes as a cloud. An application based on such clouds is taken as a cloud application. This paradigm is increasingly popular in the industry,where industrial leaders such as Microsoft [26], Google[2], and IBM [5] strongly promote the paradigm in recent years. An early attempt to formulate cloud computing dates back to at least 1997 [8]. However, to our best knowledge, the adoption and promotion of cloud computing has been slow until 2007 [9]. We observe that the history of early industrial adoptions of cloud computing share some common milestones with that of service computing [4]. For example, it took service computing [27] a long time ten years or so to receive worldwide support from lea