CSR-AES: User Support Software for a Fresh Breeze Computer System

Fresh Breeze项目涉及一个多核芯片架构，该架构解决了对并行计算的更好编程支持的需求，包括并行程序的可组合性。这是通过支持全局虚拟内存，采用基于固定大小块的新型内存模型，以及通过使用片上调度器对计算线程进行细粒度调度来虚拟化处理资源来实现的。一个周期精确的体系结构模拟服务于测试和评估体系结构说明性应用。传统操作系统中与内存管理、文件系统支持和进程调度相关的许多功能都被Fresh Breeze架构中的硬件特性所取代。因此，Fresh Breeze操作软件与传统的操作系统有本质上的不同。Fresh Breeze架构提供了特殊的计算对象类：支持数据流的期货和支持事务的守卫。Fresh Breeze多线程程序执行模型由Fresh Breeze架构直接支持，因此这些特性可用于编写支持用户认证、资源管理、输入/输出设施以及目录和文件管理的软件。计划通过RAMP原型基础设施向感兴趣的机构提供Fresh Breeze架构的FPGA实现。该项目的好处包括一个强大的新计算平台的可能性，该平台有效地支持为并行计算开发健壮的软件，从而提高程序员的生产力和性能。对更广泛的社区的好处包括更好的计算设施，如准确的天气预报，药物设计和可持续发展。

The Fresh Breeze Project concerns a multi-core chip architecture that addresses the need for better programming support for parallel computation, including composabilityof parallel programs. This is accomplished bysupporting global virtual memory, employing a novel memorymodel based on fixed-size chunks, and virtualizing processingresources through fine-grain scheduling of threads ofcomputation using an on-chip scheduler.A cycle-accurate simula­tion of the architecture servesfor testing and evaluating the architecture inillustrative applications.Many functions of a conventional operating system relating to memory management, file system support, and process scheduling are replaced by hardware features in the Fresh Breeze architecture. In consequence, Fresh Breeze operating software differs substan­tially from a conventionaloperating system. The Fresh Breeze architecture providesspecial classes of computing objects: futures to supportdata streams and guards to support transactions.The Fresh Breeze multithread program execution model is supported directly by the Fresh Breeze architecture, so these features are available for writing support soft­ware for user authentication, resource management, input/output facilities, and directory andfile management. It is planned to make an FPGA implementationof the Fresh Breeze architecture available to interestedinstitutions by means of the RAMP prototyping infrastructure.Benefits of the project include the possibility of a powerful new computing platform with effective support for the development of robust software for parallel computing, leading to higher programmer productivity and performance. Benefits to the broader communityinclude better computing facilities for goals such asaccurate weather forecasting, drug design, and sustainabledevelopment.