TY - GEN
T1 - Work-in-progress
T2 - 12th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis, CODES 2017
AU - Li, Qiao
AU - Shi, Liang
AU - Di, Yejia
AU - Du, Yajuan
AU - Wu, Kaijie
AU - Xue, Chun Jason
AU - Zhuge, Qingfeng
AU - Sha, Edwin H.M.
N1 - Publisher Copyright:
© 2017 ACM.
PY - 2017/10/15
Y1 - 2017/10/15
N2 - This paper proposes to improve read performance of LDPC based flash memory by exploiting process variation (PV). The work includes three parts. First, a block grouping approach is proposed to classify the flash blocks based on their reliability. Second, based on the grouping approach, a read data placement scheme is proposed, which is designed to place read-hot data on flash blocks with high reliability. However, simply placing read-hot data to high reliable blocks conflicts with recent PV-aware wear leveling schemes. In the third part of the work, a grouping partition scheme is proposed to limit the number of high reliable blocks for read-hot data. In this case, read performance can be well improved with little impact on the lifetime improvement.
AB - This paper proposes to improve read performance of LDPC based flash memory by exploiting process variation (PV). The work includes three parts. First, a block grouping approach is proposed to classify the flash blocks based on their reliability. Second, based on the grouping approach, a read data placement scheme is proposed, which is designed to place read-hot data on flash blocks with high reliability. However, simply placing read-hot data to high reliable blocks conflicts with recent PV-aware wear leveling schemes. In the third part of the work, a grouping partition scheme is proposed to limit the number of high reliable blocks for read-hot data. In this case, read performance can be well improved with little impact on the lifetime improvement.
UR - https://www.scopus.com/pages/publications/85034843059
U2 - 10.1145/3125502.3125549
DO - 10.1145/3125502.3125549
M3 - 会议稿件
AN - SCOPUS:85034843059
T3 - Proceedings of the 12th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis Companion, CODES 2017
BT - Proceedings of the 12th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis Companion, CODES 2017
PB - Association for Computing Machinery, Inc
Y2 - 15 October 2017 through 20 October 2017
ER -