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LCTES 2019
Sat 22 - Fri 28 June 2019 Phoenix, Arizona, United States
co-located with PLDI 2019
Sun 23 Jun 2019 10:30 - 10:45 at 105A - Session 1: Memory Management Chair(s): Greg Stitt

Three-dimensional (3D) NAND flash has been developed to boost the storage capacity by stacking memory cells vertically. One critical characteristic of 3D NAND flash is its large endurance variation. With this characteristic, the lifetime will be determined by the unit with the worst endurance. However, few works are proposed to exploit the variations with acceptable overhead for lifetime improvement. In this paper, a variation-aware lifetime improvement framework is proposed. The basic idea is motivated by an observation that there is an elegant matching between unit endurance and wearing variations when wear leveling and \textit{implicit compression} are applied together. To achieve the matching goal, the framework is designed from three-type-unit levels, including cell, line, and block, respectively. Series of evaluations are conducted, and the evaluation results show that the lifetime improvement is encouraging, better than that of the combination with the state-of-the-art schemes.

Sun 23 Jun
Times are displayed in time zone: (GMT-07:00) Tijuana, Baja California change

09:45 - 11:00: LCTES 2019 - Session 1: Memory Management at 105A
Chair(s): Greg StittUniversity of Florida
LCTES-2019-papers09:45 - 10:00
Asif Ali KhanTU Dresden, Germany, Norman A. RinkTU Dresden, Germany, Fazal HameedTU Dresden, Germany, Jeronimo CastrillonTU Dresden, Germany
LCTES-2019-papers10:00 - 10:15
LCTES-2019-papers10:15 - 10:30
Thomas Haywood DadzieHanyang University, Jiwon LeeHanyang University, Jihye KimKookmin University, Hyunok OhHanyang Univ
LCTES-2019-papers10:30 - 10:45
Yejia DiEast China Normal University, Chongqing University, Liang ShiChongqing University, Shuo-Han ChenAcademia Sinica, Taipei, Jason XueCity University of Hong Kong, China, Edwin ShaChongqing University
LCTES-2019-papers10:45 - 11:00
Chundong WangSingapore University of Technology and Design, Sudipta ChattopadhyaySingapore University of Technology and Design, Gunavaran BrihadiswarnUniversity of Moratuwa