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，它满足了对并行计算更好的编程支持的需求，包括并行程序的可组合性。这是通过支持全局虚拟内存，采用基于固定大小的块的新型内存模型，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。对该架构的精确周期模拟用于测试和评估该架构的示例性应用。在Fresh Breeze架构中，许多与内存管理、文件系统支持和进程调度相关的传统操作系统功能被硬件特性所取代。因此，Fresh Breeze操作软件在本质上不同于传统操作系统。Fresh Breeze体系结构提供了特殊的计算对象类别：支持数据流的未来和支持事务的警卫。Fresh Breeze多线程程序执行模型直接由Fresh Breeze体系结构支持，因此这些功能可用于编写支持软件，用于用户身份验证、资源管理、输入/输出设施以及目录和文件管理。该项目计划通过RAMP原型基础设施为感兴趣的机构提供Fresh Breeze体系结构的现场可编程门阵列实现。该项目的好处包括有可能建立一个强大的新计算平台，并为开发用于并行计算的健壮软件提供有效支持，从而提高程序员的生产率和性能。对更广泛的社区的好处包括更好的计算设施，以实现准确的天气预报、药物设计和可持续发展等目标。

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.