标题：Set Variation-aware Shared LLC Management for CPU-GPU Heterogeneous Architecture
作者：Li, Zhaoying; Ju, Lei; Dai, Hongjun; Li, Xin; Zhao, Mengying; Jia, Zhiping
作者机构：[Li, Zhaoying; Ju, Lei; Dai, Hongjun; Li, Xin; Zhao, Mengying; Jia, Zhiping] Shandong Univ, Sch Comp Sci & Technol, Jinan, Shandong, Peoples R China.
会议名称：Design, Automation and Test in Europe Conference and Exhibition (DATE)
会议日期：MAR 19-23, 2018
来源：PROCEEDINGS OF THE 2018 DESIGN, AUTOMATION & TEST IN EUROPE CONFERENCE & EXHIBITION (DATE)
摘要：Heterogeneous CPU-GPU multiprocessor systems on-chip (HMPSoC) becomes a popular architecture choice for high performance embedded systems, where shared last-level cache (LLC) management becomes a critical design consideration. We observe that within a sampling period, CPU and CPU may have distinct access behaviors over various LLC sets. In this work, we propose a light-weighted and fined-grained cache management policy to cope with the CPU-GPU access behavior variation among cache sets. In particular, CPU and GPU requests are prioritized disparately in each LLC set during cache block insertion and promotion, based on the per-core utility behaviors and a per-set CPU-GPU miss counter. Experimental results show that our LLC management scheme outperforms the two state-of-the-art schemes TAP-RRIP and LSP by 12.6% and 10.01%, respectively.