TAAROA项目规范
The TAAROA Project Specification
摘要：
自从引入以来，网格计算范式在科学和工业领域都得到了广泛的采用。网格计算范例的主要优点是能够以透明的方式共享和协调属于不同机构域的多个异构和大规模分布式资源。其局限性之一是缺乏执行服务的设施。事实上，网格计算在传统上一直被用于运行计算密集型或数据密集型应用程序。服务与这类应用程序的不同之处在于，它通常等待来自客户端的请求并回复有用的信息;此外，服务通常受到一些预定义的约束，称为服务级别协议（SLA），包括时间和性能限制。在本文中，我们提出了TAAROA中间件，软件系统，试图扩展传统的目标的网格计算范例，包括服务的概念。它试图通过使用虚拟化技术来实现其目标。通过抽象计算机的硬件和软件资源，虚拟化为TAAROA带来了两个重要的好处：（1）服务运行时环境的封装，以及（2）通过迁移工具，将服务从运行它的计算机移动到另一台计算机的可能性，这有望降低违反某些SLA约束的风险。在当前版本的TAAROA中间件中，没有明确的机制来实现相关SLA定义的服务级别;这意味着实际上TAAROA只能提供尽力而为的服务。
英文摘要：
Since its introduction, the Grid computing paradigm has been widely adopted both in scientific and also in industrial areas. The main advantage of the Grid computing paradigm is the ability to enable, in a transparent way, the sharing and the coordination of several heterogeneous and large-scale distributed resources belonging to different institutional domains. One of its limitation is the lack of facilities for executing services. In fact, Grid computing has been traditionally used and improved for running computational-intensive or data-intensive applications. A service differs from this kind of applications in that it usually waits for requests from clients and replies with useful information; moreover, a service is typically subjected to some predefined constraints, called Service Level Agreement (SLA), including both temporal and performance restrictions. In this paper we present the TAAROA middleware, a software system that tries to extend the traditional target of the Grid computing paradigm to include the service concept. It attempts to accomplish its goal by using the virtualization technology. By abstracting the hardware and software resources of a computer, virtualization brings to TAAROA two important benefits: (1) the encapsulation of the service runtime environment, and (2) the possibility, through the migration facility, to move a service from the computer where it is running to another one that hopefully reduces the risk of violating some of the SLA constraints. In the current version of TAAROA middleware there is no explicit mechanism for achieving the level of a service as defined by the related SLA; this means that actually TAAROA is only able to provide a best-effort service.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
