CSR--EHS: Flow-Based Computer Systems Support for Synergistic Hardware-Software Management of Embedded Systems

CSR--EHS：基于流程的计算机系统支持嵌入式系统的软硬件协同管理

• 批准号: 0509402
• 负责人: Margaret Martonosi
• 金额: --
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0509402&HistoricalAwards=false
• 关键词: CSR; EHS; Flow; Based; Computer

Today's embedded systems have been designed in an ad hoc manner, each system re-designed from scratch to handle new system and software requirements. As requirements for embedded systems are changing rapidly, a key challenge is to develop general design methodologies that can scale to new VLSI technologies such as multiple cores on a billion-transistor embedded chip, new power-performance targets, and new-generation software systems. This research proposes a flow-based embedded system that focuses on an execution model based on flows and a corresponding embedded system platform based on the flow execution model. In a flow-based embedded system, the hardware dynamically adapts to (1) heterogeneity in an embedded system and (2) energy constraints while ensuring (3) real-time deadlines are met, and (4) the software is shielded from all the above hardware complexities through the flow execution model, and is thus (5) portable across hardware generations. Flows indicate all potential partition points in an application; thus they expose points that allow the systems software (and supporting hardware) to dynamically adapt the actual partitioning or parallelism in the face of real-time deadlines, energy and reliability constraints, and heterogeneity. The scope of the project includes investigating flow-parallelizing compiling techniques that automatically extract flows from sequential code, novel hardware mechanisms that ensure low-overhead dynamic execution adaptation, lightweight OS support for the flow model across a range of embedded applications.

今天的嵌入式系统是以临时方式设计的，每个系统都从划痕重新设计，以处理新的系统和软件要求。 随着嵌入式系统的要求正在迅速变化，关键的挑战是开发一般设计方法，这些方法可以扩展到新的VLSI技术，例如十亿轨道嵌入式芯片上的多个核心，新的强大绩效目标和新的生成软件系统。 这项研究提出了一个基于流动的嵌入式系统，该系统重点介绍基于流量的执行模型和基于流执行模型的相应嵌入式系统平台。 在基于流动的嵌入式系统中，硬件动态适应（1）嵌入式系统中的异质性和（2）在确保满足（3）实时截止日期时的能量限制，并且（4）该软件通过流程执行模型屏蔽了所有上述硬件复杂性，因此（5）在硬件跨硬件生成跨硬件生成。 流表示应用程序中的所有潜在分区点；因此，他们暴露了允许系统软件（并支持硬件）在实时截止日期，能量和可靠性约束以及异质性时动态调整实际分区或并行性的点。 该项目的范围包括研究与流平行的编译技术，这些技术会自动从顺序代码中提取流量，新型硬件机制，以确保跨一系列嵌入式应用程序，可确保低空动态执行适应，对流模型的轻量级OS支持。