Journal
2021 36TH INTERNATIONAL TECHNICAL CONFERENCE ON CIRCUITS/SYSTEMS, COMPUTERS AND COMMUNICATIONS (ITC-CSCC)
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.1109/ITC-CSCC52171.2021.9501266
Keywords
PCM; Wear-leveling; LLC; bit-counter
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Funding
- SK Hynix Inc.
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This paper proposes a last-level cache (LLC) management algorithm to improve PCM's lifetime by evicting dirty blocks evenly to the PCM, resulting in a 35% longer lifetime improvement without any PCM modification.
Since PCM memory has various advantages over DRAM, it is attracting attention as the next-generation memory. However, because of a few drawbacks, such as long write latency and limited write endurance, PCM cannot be used as the conventional system's main memory. This paper proposes the last-level cache (LLC) management algorithm to improve PCM's lifetime by evicting dirty blocks evenly to the PCM. As a result, we achieved 35% longer lifetime improvement without any PCM modification.
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