CECS TR Coversheet New
نویسندگان
چکیده
Traditional approaches for managing software-programmable memories (SPMs) do not support sharing of distributed on-chip memory resources, and consequently miss the opportunity to better utilize those memory resources. Managing on-chip memory resources in many-core embedded systems (MES) with distributed SPMs requires runtime support to share memory resources between various threads with different memory demands running concurrently. Runtime SPM managers cannot rely on prior knowledge about the dynamically changing mix of threads that will execute, and therefore should be designed in a way that enable SPM allocations for any unpredictable mix of threads contending for on-chip memory space. This paper proposes SPM-vSharE : an operating-system-level solution, along with hardware support, to virtualize and ultimately share SPM resources across a many-core embedded system in order to reduce the average memory latency. We present a number of simple allocation policies to improve performance and energy. Experimental results show that sharing SPMs could reduce the average execution time of the workload up to 19.5% and reduce the dynamic energy consumed in the memory subsystem up to 14%.
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تاریخ انتشار 2016