Symptom-Based Fault Tolerant Techniques
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  • Release Date: 2021-12-10
  • embedded systems
  • fault tolerance
  • protection technique
  • soft error
  • symptoms
Video Introduction

This video is adapted from 10.3390/electronics10233028

Aggressive technology scaling and near-threshold computing have made soft error reliability one of the leading design considerations in modern embedded microprocessors. Although traditional hardware/software redundancy-based schemes can provide a high level of protection, they incur significant overheads in terms of performance and hardware resources. The considerable overheads from such full redundancy-based techniques has motivated researchers to propose low-cost soft error protection schemes, such as symptom-based error protection schemes. The main idea behind a symptom-based error protection scheme is that soft errors in the system will quickly generate some symptoms, such as exceptions, branch mispredictions, cache or TLB misses, or unpredictable variable values. Therefore, monitoring such infrequent symptoms makes it possible to cover the manifestation of failures caused by soft errors. Symptom-based protection schemes have been suggested as shortcuts to achieve acceptable reliability with comparable overheads.

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Ko, Y. Symptom-Based Fault Tolerant Techniques. Encyclopedia. Available online: (accessed on 21 April 2024).
Ko Y. Symptom-Based Fault Tolerant Techniques. Encyclopedia. Available at: Accessed April 21, 2024.
Ko, Yohan. "Symptom-Based Fault Tolerant Techniques" Encyclopedia, (accessed April 21, 2024).
Ko, Y. (2021, December 10). Symptom-Based Fault Tolerant Techniques. In Encyclopedia.
Ko, Yohan. "Symptom-Based Fault Tolerant Techniques." Encyclopedia. Web. 10 December, 2021.