@inproceedings{015bead13341438bb5e11368184deb08,
title = "Rethinking Last-level-cache Write-back Strategy for MLC STT-RAM Main Memory with Asymmetric Write Energy",
abstract = "To meet the requirement of low-power consumption, multi-level-cell STT-RAM (MLC STT-RAM) has been widely regarded as a potential candidate for replacing DRAM-based main memory in the next generation computer architectures because of its high memory cell density, fast read/write performance and zero refresh power consumption. However, MLC STT-RAM has higher power consumption than DRAM while a write operation is performed because MLC STT-RAM sometimes needs to perform a two-step transition to change the originally stored bits to another specifically written bit patterns. As a result, MLC STT-RAM has different power consumption while different bit patterns are written to a memory cell. To the best of our knowledge, a few or none of the previous studies rethink a cache replacement policy to overcome the asymmetric write energy issue of MLC STT-RAM-based main memory. Thus, this study proposes an energy-aware cache replacement policy, namely E-cache, which considers asymmetric write-back power consumption on MLC STT-RAM-based main memory to evict a proper cached data from the last-level cache, so as to minimize system power consumption. The experimental results show that the proposed solution reduces the energy consumption by 36% on average, compared with the LRU.",
keywords = "STT-RAM, asymmetric write energy, last-level cache management, replacement policy",
author = "Liang, {Yu Pei} and Chen, {Tseng Yi} and Chang, {Yuan Hao} and Chen, {Shuo Han} and Chen, {Pei Yu} and Shih, {Wei Kuan}",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 2019 IEEE/ACM International Symposium on Low Power Electronics and Design, ISLPED 2019 ; Conference date: 29-07-2019 Through 31-07-2019",
year = "2019",
month = jul,
doi = "10.1109/ISLPED.2019.8824899",
language = "???core.languages.en_GB???",
series = "Proceedings of the International Symposium on Low Power Electronics and Design",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "International Symposium on Low Power Electronics and Design, ISLPED 2019",
}