Decongest: Accelerating Super-Dense PCM under Write Disturbance by Hot Page Remapping

Wang, R and Mittal, Sparsh and Zhang, Y (2017) Decongest: Accelerating Super-Dense PCM under Write Disturbance by Hot Page Remapping. IEEE Computer Architecture Letters, 99. PP. ISSN 1556-6056 (In Press)

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Abstract

At small feature sizes, phase change memory (PCM) shows write disturbance (WD) error (WDE) and this issue can eclipse the density and energy efficiency advantage of PCM. We propose ‘Decongest’, a technique to address WD errors in main memory designed with super-dense (4F2 cell size) PCM. Decongest works by identifying and remapping write-intensive hot pages to a WD-free spare area, which avoids WD to nearby pages due to writing these hot pages, and WD to these hot pages from writing nearby pages. Compared to a WD-affected super-dense PCM baseline, Decongest improves the performance by 14.0%, and saves 21.8% energy.

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IITH Creators:	IITH Creators ORCiD Mittal, Sparsh http://orcid.org/0000-0002-2908-993X
Item Type:	Article
Uncontrolled Keywords:	Phase change materials, Computer architecture, Microprocessors, Writing, Radiation detectors, Diseases, Acceleration
Subjects:	Computer science > Big Data Analytics
Divisions:	Department of Computer Science & Engineering
Depositing User:	Team Library
Date Deposited:	27 Mar 2017 07:24
Last Modified:	17 Oct 2017 09:59
URI:	http://raiithold.iith.ac.in/id/eprint/3115
Publisher URL:	https://doi.org/10.1109/LCA.2017.2675883
OA policy:	http://www.sherpa.ac.uk/romeo/issn/1556-6056/
Related URLs:	Google Scholar

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