CSR-AES Collaborative: Encore/J: Transparently Recoverable Java for Resilient Distributed Computing

CSR-AES 协作：Encore/J：用于弹性分布式计算的透明可恢复 Java

• 批准号: 0720505
• 负责人: Antony Hosking
• 金额: $ 3万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0720505&HistoricalAwards=false
• 关键词: CSR; AES; Collaborative; Encore; Transparently

The EncoreJ project is developing tools and libraries for transparent rewriting of Java code, making distributable Java applications resilient in the face of execution node reconfiguration and failure. Developers control the system, but EncoreJ automatically rewrites compiled Java code, as packages are loaded, adding support for creating, accessing, and computing upon local and remote objects, and for resilience in the face of system failures and reconfigurations. EncoreJ further interfaces with a variety of persistence mechanisms (e.g., databases), both for providing fundamental resilience (saving/restoring information) and for coordinating recovery with the mechanisms of the external database.EncoreJ exploits resiliency support to make it easy to reconfigure applications as the host platform evolves, adding and removing resources dynamically; e.g., a virtual node might go down and be replaced by another, in order to force work to move to a newly available system. Programmers describe "on the side" (without modifying source code), how to place, move, and replicate objects and computations; the source code remains the primary mechanism for expressing algorithms clearly without hard-coded details of distribution or resilience.The EncoreJ tools and prototype are a platform for research by the wider community working on policies/algorithms for migration, replication, scheduling, etc., in Grid systems. The focus is a convenient and flexible platform, powerful and extensible, without over-commitment to any particular policies or strategies. EncoreJ builds on readily available and standard systems (Java virtual machines and packages) to ensure wide applicability and easy distribution and adoption.This award is seed funding for project development.

Encorej项目正在开发用于透明重写Java代码的工具和库，使可分发的Java应用程序在执行节点重新配置和失败时具有弹性。 开发人员控制系统，但是EncoreJ会自动重写编译的Java代码，因为加载了软件包，增加了对本地和远程对象上创建，访问和计算的支持，并在系统故障和重新配置时为弹性而进行弹性。 EncoreJ further interfaces with a variety of persistence mechanisms (e.g., databases), both for providing fundamental resilience (saving/restoring information) and for coordinating recovery with the mechanisms of the external database.EncoreJ exploits resiliency support to make it easy to reconfigure applications as the host platform evolves, adding and removing resources dynamically;例如，一个虚拟节点可能会下降并被另一个替换，以强迫工作转移到新的系统。 程序员描述“侧面”（不修改源代码），如何放置，移动和复制对象和计算；源代码仍然是清楚地表达算法的主要机制，而无需硬编码的分布或弹性细节。encorej工具和原型是在网格系统中研究策略/迁移，复制，调度等的更广泛社区的研究平台。 重点是一个方便且灵活的平台，功能强大且可扩展，没有任何特定政策或策略的过度交流。 Encorej建立在随时可用的和标准系统（Java Virtual Machines and Packages）的基础上，以确保广泛的适用性，易于分发和采用。该奖项是项目开发的种子资金。