A Dynamic Scratchpad Memory Unit for Predictable Real-Time Embedded Systems

Real-time;embedded systems;scratchpad;Electrical and Computer Engineering

Wasly, Saud

University of Waterloo

关键词: Real-time;    embedded systems;    scratchpad;    Electrical and Computer Engineering;   

Others  :  https://uwspace.uwaterloo.ca/bitstream/10012/7210/1/Wasly_Saud.pdf

瑞士|英语

来源: UWSPACE Waterloo Institutional Repository

【 摘 要 】

Scratch-pad memory is a popular alternative to caches in real-time embedded systemsdue to its advantages in terms of timing predictability and power consumption. However,dynamic management of scratch-pad content is challenging in multitasking environments.To address this issue, this thesis proposes the design of a novel Real-Time ScratchpadMemory Unit (RSMU). The RSMU can be integrated into existing systems with minimalarchitectural modi cations. Furthermore, scratchpad management is performed at theOS level, requiring no application changes. In conjunction with a two-level schedulingscheme, the RSMU provides strong timing guarantees to critical tasks. Demonstrationand evaluation of the system design is provided on an embedded FPGA platform.