EHS: Highly Flexible Multi-Mode Embedded Systems

EHS：高度灵活的多模式嵌入式系统

• 批准号: 0410526
• 负责人: John Lach
• 金额: $ 30万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0410526&HistoricalAwards=false
• 关键词: EHS; Highly; Flexible; Multi; Mode

Lach - AbstractA challenging aspect of embedded system design is hardware/software partitioning. Many system tasks may be performance-sensitive, but hardware implementation of all such tasks may be prohibitively expensive. In addition, hardware implementation of tasks that are performance-sensitive but rarely executed results in low resource utilization. Multi-mode systems have emerged as an area-efficient solution to this problem, implementing multiple time-wise mutually exclusive performance-sensitive tasks in a single hardware space. To execute a particular task, the hardware is configured to the appropriate mode. However, existing multi-mode techniques have limited reconfigurability, as only the datapath interconnect can be changed and only from mode-to-mode.This project is developing a highly flexible multi-mode embedded system design technique that enables inter- and intra-mode reconfiguration of datapath components and control structures as well as interconnect. This added flexibility results in significant area and power savings over existing multi-mode techniques. The hardware flexibility is efficiently obtained via a new small-scale reconfigurability (SSR) design technique, which integrates small amounts of reconfigurable logic and interconnect into primarily fixed logic circuits, thus avoiding the area, delay, and power penalties associated with general-purpose reconfigurable fabric The design paradigm provided by these techniques requires a reevaluation of hardware/software partitioning in embedded systems, as the cost model associated with hardware implementation changes significantly.This project contains three primary components. First is the development of multi-mode system synthesis techniques that leverage the extra hardware flexibility provided by reconfigurable datapath components and controllers and intra-mode reconfigurability. The goal is a generic system synthesis algorithmic framework (including scheduling, allocation, and binding algorithms) that is applicable to a variety of embedded system applications. Second is the development of SSR as a hardware implementation technique for flexible datapath components and controllers. Third is exploring the effect this new design paradigm has on hardware/software partitioning in embedded system desig

Lach - 摘要嵌入式系统设计的一个具有挑战性的方面是硬件/软件分区。许多系统任务可能对性能敏感，但所有此类任务的硬件实现可能非常昂贵。此外，对性能敏感但很少执行的任务的硬件实现会导致资源利用率低。多模式系统已成为解决此问题的区域高效解决方案，可在单个硬件空间中实现多个时间上互斥的性能敏感任务。为了执行特定任务，将硬件配置为适当的模式。然而，现有的多模式技术的可重构性有限，因为只能更改数据路径互连，并且只能在模式之间进行更改。该项目正在开发一种高度灵活的多模式嵌入式系统设计技术，该技术可实现模式间和模式内数据路径组件和控制结构以及互连的重新配置。与现有的多模式技术相比，这种增加的灵活性可显着节省面积和功耗。通过新的小规模可重构性（SSR）设计技术，可以有效地获得硬件灵活性，该技术将少量的可重构逻辑和互连集成到主要固定的逻辑电路中，从而避免了与通用可重构性相关的面积、延迟和功耗损失。这些技术提供的设计范例需要重新评估嵌入式系统中的硬件/软件分区，因为与硬件实现相关的成本模型发生了显着变化。该项目包含三个主要组件。首先是多模式系统综合技术的开发，该技术利用可重构数据路径组件和控制器以及模式内可重构性提供的额外硬件灵活性。目标是一个适用于各种嵌入式系统应用的通用系统综合算法框架（包括调度、分配和绑定算法）。其次是 SSR 的开发，作为灵活数据路径组件和控制器的硬件实现技术。第三是探索这种新的设计范式对嵌入式系统设计中的硬件/软件划分的影响