Customizable Embedded System Architectures
نویسندگان
چکیده
We outline a framework for dynamic application customization for low-power and real-time embedded systems. The framework implements a cross-layer application-customizable embedded systems platform, in which the hardware, the system software, and the application tasks are fine-tuned in their interaction and functionality to the requirements of the program under execution. The traditional design approach has been to put together a set of general-purpose embedded processor cores, deploy a domain specific or a general operating system (OS) and map on it the set of program tasks. In all such systems, the main culprit for the energy inefficiency and the poor real-time guarantees is the general-purpose nature of the hardware architecture, the system software layer, and the interaction between them. The proposed architecture is capable of utilizing application information to boost the performance and lower the power consumption of the most important microarchitectural components such as instruction/data caches and the memory subsystem. We outline a design framework, including CAD support infrastructure and reprogrammable hardware support, for a dynamically customizable embedded system. We outline the underlying algorithms for compile-time extraction of the utilized application properties and we present the architectural principles of the hardware support. Experimental results confirm the efficacy of this novel embedded system architecture.
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تاریخ انتشار 2007