Security enhancement of cloud servers with a redundancy-based fault-tolerant cache structure |
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| Affiliation: | 1. College of Computer and Information Engineering, Xiamen University of Technology, China;2. National Laboratory for Parallel and Distributed Processing, National University of Defensive Technology, China;3. Graduate School of Engineering, Nagoya University, Japan;4. Graduate School of Information Science, Nagoya University, Japan;5. College of Computer Science and Electronic Engineering, Hunan University, China;6. School of Computer and Software, Nanjing University of Information Science and Technology, China;1. Graduate Institute of Management, National Taiwan University of Science and Technology, 2F, 196 Hopien N. St., Sanchung District, New Taipei City 241, Taiwan;2. Department of Business Administration, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec. 4, Da''an Dist., Taipei City 10607, Taiwan;3. Department of Computer Science and Information Engineering, Ming Chuan University, No. 5, The-Ming Rd., Gwei Shan District, Taoyuan County 333, Taiwan |
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| Abstract: | The modern chip multiprocessors are vulnerable to transient faults caused by either on-purpose attacks or system mistakes, especially for those with large and multi-level caches in cloud servers. In this paper, we propose a modified/shared replication cache to keep a redundancy for the latest accessed and modified/shared L2 cache lines. According to the experiments based on Multi2Sim, this cache with proper size can provide considerable data reliability. In addition, the cache can reduce the average latency of memory hierarchy for error correction, with only about 20.2% of L2 cache energy cost and 2% of L2 cache silicon overhead. |
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| Keywords: | Cloud server Security enhancement Chip multiprocessor Fault tolerance Redundancy-based cache structure Cache coherence |
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