Improving Non-Volatile Memory Lifetime through Temporal Wear-Limiting
- Degree Grantor:
- University of California, Santa Barbara. Electrical & Computer Engineering
- Degree Supervisor:
- Frederic Chong
- Place of Publication:
- [Santa Barbara, Calif.]
- Publisher:
- University of California, Santa Barbara
- Creation Date:
- 2014
- Issued Date:
- 2014
- Topics:
- Engineering, Computer and Computer Science
- Keywords:
- Non-volatile memory,
Endurance - Genres:
- Online resources and Dissertations, Academic
- Dissertation:
- M.S.--University of California, Santa Barbara, 2014
- Description:
Non-volatile memory technologies provide a low-power, high-density alternative to traditional DRAM main memories, yet all suffer from some degree of limited write endurance. The non-uniformity of write traffic exacerbates this limited endurance, causing write-induced wear to concentrate on a few specific lines. Wear-leveling attempts to mitigate this issue by distributing write-induced wear uniformly across the memory. Orthogonally, wear-limiting attempts to increase memory lifetime by directly reducing wear. In this paper, we present the concept of temporal wear-limiting, in which we exploit the trade-off between write latency and memory lifetime. Using a history of the slack between per-bank write operations, we predict future write latency, allowing for up to a 1.5x memory lifetime improvement. We present two extensions for improving the effectiveness of this history-based mechanism: a method for dynamically determining the optimum history size, and a method for increasing lifetime improvement through address prediction.
- Physical Description:
- 1 online resource (48 pages)
- Format:
- Text
- Collection(s):
- UCSB electronic theses and dissertations
- Other Versions:
- http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqm&rft_dat=xri:pqdiss:1565434
- ARK:
- ark:/48907/f3st7mzv
- ISBN:
- 9781321202663
- Catalog System Number:
- 990045116240203776
- Copyright:
- Brian Neely, 2014
- Rights:
- In Copyright
- Copyright Holder:
- Brian Neely
File | Description |
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Access: Public access | |
Neely_ucsb_0035N_12153.pdf | pdf (Portable Document Format) |