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- W3091205277 abstract "The current mobile applications have rapidly growing memory footprints, posing a great challenge for memory system design. Insufficient DRAM main memory will incur frequent data swaps between memory and storage, a process that hurts performance, consumes energy, and deteriorates the write endurance of typical flash storage devices. Alternately, a larger DRAM has higher leakage power and drains the battery faster. Furthermore, DRAM scaling trends make further growth of DRAM in the mobile space prohibitive due to cost. Emerging nonvolatile memory (NVM) has the potential to alleviate these issues due to its higher capacity per cost than DRAM and minimal static power. Recently, a wide spectrum of NVM technologies, including phase-change memories (PCMs), memristor, and 3-D XPoint has emerged. Despite the mentioned advantages, NVM has longer access latency compared to DRAM and NVM writes can incur higher latencies and wear costs. Therefore, the integration of these new memory technologies in the memory hierarchy requires a fundamental rearchitecting of traditional system designs. In this work, we propose a hardware-accelerated memory manager (HMMU) that addresses in a flat address space, with a small partition of the DRAM reserved for subpage block-level management. We design a set of data placement and data migration policies within this memory manager such that we may exploit the advantages of each memory technology. By augmenting the system with this HMMU, we reduce the overall memory latency while also reducing writes to the NVM. The experimental results show that our design achieves a 39% reduction in energy consumption with only a 12% performance degradation versus an all-DRAM baseline that is likely untenable in the future." @default.
- W3091205277 created "2020-10-08" @default.
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- W3091205277 date "2020-11-01" @default.
- W3091205277 modified "2023-10-10" @default.
- W3091205277 title "Hardware Memory Management for Future Mobile Hybrid Memory Systems" @default.
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- W3091205277 doi "https://doi.org/10.1109/tcad.2020.3012213" @default.
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