The Physiology of the Grid An Open Grid Services Architecture for Distributed Systems Integration-猫眼课题宝

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2002

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作者：

Ian T Foster;C. Kesselman;J. M. Nick;S. Tuecke

在电子商务和电子科学中，我们经常需要在分布式、异构、动态的“虚拟组织”中集成服务，这些虚拟组织是由单个企业内的不同资源和/或外部资源共享和服务提供商关系形成的。这种集成在技术上具有挑战性，因为在不同的本地平台上运行时需要实现各种服务质量。我们提出了一个开放的网格服务架构，解决这些挑战。基于网格和Web服务社区的概念和技术，该体系结构定义了一个统一的公开服务语义（网格服务）;定义了用于创建、命名和发现瞬态网格服务实例的标准机制;为服务实例提供位置透明性和多协议绑定;并支持与底层本地平台设施的集成。开放网格服务体系结构还根据Web服务描述语言（WSDL）接口和相关约定定义了创建和组成复杂分布式系统所需的机制，包括生存期管理、变更管理和通知。如果需要，服务绑定可以支持可靠的调用、身份验证、授权和委托。我们的演示补充了早期的基础文章，“网格的解剖”，通过描述网格机制如何实现面向服务的体系结构，解释网格功能如何被纳入Web服务框架，并说明我们的体系结构如何可以应用于商业计算作为分布式系统集成的基础-内部和跨组织域。这是一份草案文件，并将继续修订。最新版本可以在http://www.globus.org/research/papers/ogsa.pdf上找到。请将意见发送至foster@mcs.anl.gov，carl@isi.edu，jnick@us.ibm.com，tuecke@mcs.anl.gov

In both e-business and e-science, we often need to integrate services across distributed, heterogeneous, dynamic “virtual organizations” formed from the disparate resources within a single enterprise and/or from external resource sharing and service provider relationships. This integration can be technically challenging because of the need to achieve various qualities of service when running on top of different native platforms. We present an Open Grid Services Architecture that addresses these challenges. Building on concepts and technologies from the Grid and Web services communities, this architecture defines a uniform exposed service semantics (the Grid service); defines standard mechanisms for creating, naming, and discovering transient Grid service instances; provides location transparency and multiple protocol bindings for service instances; and supports integration with underlying native platform facilities. The Open Grid Services Architecture also defines, in terms of Web Services Description Language (WSDL) interfaces and associated conventions, mechanisms required for creating and composing sophisticated distributed systems, including lifetime management, change management, and notification. Service bindings can support reliable invocation, authentication, authorization, and delegation, if required. Our presentation complements an earlier foundational article, “The Anatomy of the Grid,” by describing how Grid mechanisms can implement a service-oriented architecture, explaining how Grid functionality can be incorporated into a Web services framework, and illustrating how our architecture can be applied within commercial computing as a basis for distributed system integration—within and across organizational domains. This is a DRAFT document and continues to be revised. The latest version can be found at http://www.globus.org/research/papers/ogsa.pdf. Please send comments to foster@mcs.anl.gov, carl@isi.edu, jnick@us.ibm.com, tuecke@mcs.anl.gov Physiology of the Grid 2

The Physiology of the Grid An Open Grid Services Architecture for Distributed Systems Integration

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