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http://dx.doi.org/10.6109/jicce.2021.19.1.22

MATE: Memory- and Retraining-Free Error Correction for Convolutional Neural Network Weights  

Jang, Myeungjae (School of Computing, Korea Advanced Institute of Science and Technology)
Hong, Jeongkyu (Department of Computer Engineering, Yeungnam University)
Publication Information
Journal of information and communication convergence engineering / v.19, no.1, 2021 , pp. 22-28 More about this Journal
Abstract
Convolutional neural networks (CNNs) are one of the most frequently used artificial intelligence techniques. Among CNN-based applications, small and timing-sensitive applications have emerged, which must be reliable to prevent severe accidents. However, as the small and timing-sensitive systems do not have sufficient system resources, they do not possess proper error protection schemes. In this paper, we propose MATE, which is a low-cost CNN weight error correction technique. Based on the observation that all mantissa bits are not closely related to the accuracy, MATE replaces some mantissa bits in the weight with error correction codes. Therefore, MATE can provide high data protection without requiring additional memory space or modifying the memory architecture. The experimental results demonstrate that MATE retains nearly the same accuracy as the ideal error-free case on erroneous DRAM and has approximately 60% accuracy, even with extremely high bit error rates.
Keywords
Convolutional neural network; Error correction codes; Main memory; Reliability; Weight data;
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