云计算作为下一代计算模式,在科学计算和商业计算领域发挥着重要作用,受到当前学术界和企业界的广泛关注.云计算不同于传统的以个人计算机为中心的本地计算,它以互联网为中心,通过构建一个或多个由大量普通机器和网络设备连接的数据中心,把海量的数据存储到数据中心上,向上层的服务和应用提供安全、可靠、快捷、透明的数据存储和计算服务.根据国内外相关文献,通过对云计算和网格计算在体系结构、计算模型、编程模型方面进行了深入的讨论,对云计算的概念有更准确和深入的了解.%Cloud computing as a next -generation comput'ng model in scientific computing and commercial computing plays an important role by the widespread concern of the academic and business circles. Cloud computing differs from traditional personal computers for the local computing. By constructing one or more connected,a large number of ordinary machines and network devices, data center, vast amounts of data stored in the data center, it can provide safe, reliable, efficient and transparent data storage and computing services in up layer services and applications. Based on the relevant literature, this paper conducted in - depth discussion on cloud computing and grid computing in architecture, the computational model, programming model, a more accurate and in - depth understanding of the concept of cloud computing could be obtained.
展开▼
