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- W3123793361 abstract "Monolithic 3D (M3D) integration has been emerged as a promising technology for fine-grained 3D stacking. As the M3D integration offers extremely small dimension of via in a nanometer-scale, it is beneficial for small microarchitectural blocks such as caches, register files, translation look-aside buffers (TLBs), etc. However, since the M3D integration requires low-temperature process for stacked layers, it causes lower performance for stacked transistors compared to the conventional 2D process. In contrast, non-volatile memory (NVM) such as magnetic RAM (MRAM) is originally fabricated at a low temperature, which enables the M3D integration without performance degradation. In this paper, we propose an energy-efficient unified L2 TLB-cache architecture exploiting M3D-based SRAM/MRAM hybrid memory. Since the M3D-based SRAM/MRAM hybrid memory consumes much smaller energy than the conventional 2D SRAM-only memory and 2D SRAM/MRAM hybrid memory, while providing comparable performance, our proposed architecture improves energy efficiency significantly. Especially, as our proposed architecture changes the memory partitioning of the unified L2 TLB-cache depending on the L2 cache miss rate, it maximizes the energy efficiency for parallel workloads suffering extremely high L2 cache miss rate. According to our analysis using PARSEC benchmark applications, our proposed architecture reduces the energy consumption of L2 TLB + L2 cache by up to 97.7% (53.6% on average), compared to the baseline with the 2D SRAM-only memory, with negligible impact on performance. Furthermore, our proposed technique reduces the memory access energy consumption by up to 32.8% (10.9% on average), by reducing memory accesses due to TLB misses." @default.
- W3123793361 created "2021-02-01" @default.
- W3123793361 creator A5034823519 @default.
- W3123793361 date "2021-01-01" @default.
- W3123793361 modified "2023-09-27" @default.
- W3123793361 title "Monolithic 3D-Based SRAM/MRAM Hybrid Memory for an Energy-Efficient Unified L2 TLB-Cache Architecture" @default.
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- W3123793361 doi "https://doi.org/10.1109/access.2021.3054021" @default.
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