MetaComputing with the IceT System

元计算与ICET系统本项目的重点是在异质网络上进行并发和分布式计算的新方法。提出的ICET系统建立在元计算技术的前人工作基础上，并扩展了这种高性能计算模式，将协作资源共享、进程移动性和代理技术结合在一起。ICET促进了可在用户之间自由交换的可移植软件模块和应用子组件的开发；这些模块也可用作修改或增强虚拟机(VM)特征的工具。这种由ICET促进的协作式元计算环境将在网络系统上提供高性能计算的传统好处，同时支持重要的新的和新兴的分布式应用程序。我们提议的项目的一项核心活动将是调查动态合并和拆分虚拟机的问题，以及开发根据所有者的限制分配池化资源的机制。拟议工作的第二个主要部分涉及创建计算基础设施，在该基础设施中可以将进程上传并软安装在远程位置、在执行期间迁移或作为代理传输到VM的多个部分。ICET中该模型的基础是Java语言。ICET在Java设施上构建了一个完整的运行时系统，不仅允许字节码的移动，还允许本地编译的可重定位对象模块的移动，从而为计算密集型应用程序提供高效率。我们的主要工作将致力于设计和建设ICET中的移动进程基础设施，特别关注合并后的虚拟机所固有的资源管理和安全问题。

Metacomputing with the IceT SystemThe focus of this project are novel methodologies for concurrent and distributed computing on heterogeneous networks. The proposed IceT system builds upon prior work in metacomputing technologies and extends this mode of high performance computing to incorporate cooperative resource sharing, process mobility, and agent technologies. IceT facilitates the development of portable software modules and application sub-components that are freely exchangeable among users; these modules may also be used as vehicles for modifying or enhancing virtual machine (VM) characteristics. Such a cooperative metacomputing environment facilitated by IceT will provide the traditional benefits of high performance computing on networked systems while enabling significant new and emerging distributed applications. A core activity of our proposed project will be to investigate issues in dynamic merging and splitting of virtual machines and developing mechanisms to allocate pooled resources in accordance with owners' constraints. The second major portion of the proposed work involves the creation of a computational infrastructure in which processes may be uploaded and soft-installed at remote locations, migrated during execution, or travel as an agent to several parts of the VM. The basis for this model in IceT is the Java language. IceT builds a complete runtime system upon Java facilities to allow movement not only of bytecode, but also natively compiled relocatable object modules, thereby enabling high efficiencies for compute-intensive applications. A major portion of our effort will be devoted to designing and constructing the mobile process infrastructure in IceT, with particular focus on resource management and security issues inherent in merged virtual machines.