CSR - AES Integrative Approaches to Next-Generation Heterogeneous Computing

这个项目解决了网格和元计算系统中的问题，这些问题源于（1）资源类型的异构性，（2）准备和准备应用程序的困难，以及（3）网格中常见的固有的高水平动态性。 协调不同的资源类，并动态地准备资源，在应用程序执行过程中成为可用的策略是这项研究的重点。所采用的方法基于以客户为中心的覆盖软件，该软件提供对各种资源的统一访问，并辅之以基本上自动化设置和配置的运行时系统。覆盖层通过类似于设备驱动程序操作的服务驱动程序或中介程序统一异构资源。新的资源和可用性的变化通过中介器及其服务守护进程的自部署来处理，使覆盖能够自适应地呈现具有底层资源的一致聚合投影的应用程序。这个框架被称为Unibus，旨在适应多个资源类，从虚拟化系统到交互式shell、作业管理器和元数据管理器的访问类型都有。统一抽象基于识别资源类中的共性并向它们提供统一接口。动态环境调节建立在自主软件部署的开放标准之上，应用程序结构和依赖关系的规范在中介程序和服务守护进程的帮助下驱动平台准备。Unibus系统采用的这种方法预计将大大提高跨多个资源类别和多个管理域的资源共享的普及率。 通过减轻繁琐的设置要求和协调资源的多样性，将大大有助于实现网格和元计算的真正愿景。

This project addresses issues in grids and metacomputing systems arising from (1) heterogeneity in resource types, (2) difficulties in preparing and staging applications, and (3) intrinsically high levels of dynamicity common in grids. Strategies to reconcile different resource classes, and to dynamically prepare resources that become available during application execution are the focus of this research. The approach adopted is based on is based on client-centric overlay software that provides unified access to diverse resources, complemented by runtime systems that substantially automate setup and configuration. The overlay unifies heterogeneous resources through service drivers or mediators that operate analogously to device drivers. New resources and variations in availability are handled through self-deployment of mediators and their service daemon counterparts, enabling the overlay to adaptively present applications with coherent aggregated projections of the underlying resources. This framework, termed Unibus, is being designed to accommodate multiple resource classes, ranging in access type from virtualization systems to interactive shells, job schedulers, and metaschedulers. Unification abstractions are based on identifying commonalities within resource classes and presenting uniform interfaces to them. Dynamic environment conditioning builds upon open standards in autonomic software deployment, with specifications of application structure and dependencies driving platform preparation with assistance from mediators and service daemons. This approach adopted by the Unibus system is expected to substantially enhance the prevalence of resource sharing across multiple resource classes and multiple administrative domains. By alleviating tedious setup requirements and reconciling resource diversity, will contribute significantly to realizing the true vision of grids and metacomputing.