ITR: Unifying Software Frameworks for Distributed Computing

提出了一种分布式计算的体系结构框架，旨在统一多种资源共享模型。农场计算、私有虚拟机、计算网格和对等技术都是支持不同应用领域的不同范例。然而，尽管它们在计算机网络上共享资源的共同基本主题，但实现这些技术的系统倾向于排除互操作性，并且在某些情况下，需要大量的中间件来协调资源聚合。该项目采用了以提供者为中心的资源共享观点，强调轻量级软件基础设施，保持最低限度的状态，并促进直接接口到当前和新兴的分布式计算标准。通过一个可重构的，基于组件的方法，建议的框架将试图在一个统一的设置提供多个分布式计算范例的支持。本项目中采用的提供者视角设想资源所有者托管一个软件背板，所有者、客户或第三方经销商可以在该背板上加载提供增值服务的组件或组件套件。所有者保留对资源使用、安全和保护的完全控制权。组件可以实现诸如消息传输或数学变换之类的基本功能，或者可以聚合以模拟并发计算环境，或者可以将门户接口扩展到复杂的后端应用服务。原始资源或组件的提供者可以使用标准机制、框架提供的方案或私有目录来发布其可用性;客户机发现、查找和使用这些服务，并受到使用和安全约束。在本项目的实施过程中，将探讨有关分布式系统中的共性和对偶性、安全资源共享和软件重新配置的基本问题，并可能为该领域贡献新的有用的发现。由于其强大的实用主义的偏见，该项目也可能有广泛的影响，建议计划，实现有效的分布式计算系统，并通过不断发展的原型范式软件。

An architectural framework for distributed computing is proposed, with a view to unifying multiple resource sharing models. Farm computing, private virtual machines, computational grids, and peer to peer technologies are examples of di.erent paradigms that have evolved to support di.erent application domains. However, despite their common underlying theme of sharing resources across computer networks, systems implementing these technologies tend to preclude interoperability and, in some cases, require substantial middleware to orchestrate resource aggregation. This project adopts a provider-centric view of resource sharing, emphasizes lightweight software infrastructures that maintain minimal state, and facilitates straightforward interfacing to current and emerging distributed computing standards. Through a reconfigurable, component-based approach, the proposed framework will attempt to provide support for multiple distributed computing paradigms in a unified setting. The provider perspective adopted in this project envisions resource owners hosting a software backplane onto which owners, clients, or third-party resellers may load components or component suites that deliver value added services. Complete control over usage, security, and protection of resources is retained by the owner. Components may implement primitive functions such as message transport or mathematical transforms, or may be aggregated to emulate concurrent computing environments, or may ofer portal interfaces to complex backend application services. Providers of primitive resources or components may publish their availability using either standard mechanisms, framework-supplied schemes, or private directories; clients discover, lookup, and use these servicessubject to usage and security constraints.In the conduct of this project, fundamental issues concerning commonalities and dualities in distributed systems, secure resource sharing, and software reconfiguration will be explored, and will likely contribute new and useful findings to the field. Owing to its strong pragmatic bias, the project is also likely to have broad impact by suggesting schemes to realize effective distributed computing systems, and by evolving prototype paradigmatic software.