Priority Filt: A Way to Increase Network Reliability on Chip against Soft Error by Considering Multiple Bit Upset

One of the most important challenges that threaten the reliability of network-based chips is soft errors. These problems occur mainly in buffers of on the chip networks. The shrinking size of the technology has also increased the likelihood of converting single-event upset errors set to multi-event upsets, so it is predicted that by 2021 most soft errors of the multi-event reversal type will occur. Many different methods of avoiding and tolerating soft errors do not have the ability to deal with multi-event events due to different patterns. On the other hand, the rate of crosstalk fault is increasing. The purpose of this paper is to provide a method that, while improving the tolerance of single-event reversal events in buffers, is also able to tolerate multi-event upsets. The proposed method that is called Priority Flit is based on the different importance of tailer and data flits. In the other words, the fault tolerance method against soft errors in tailor and data is different. The second one is leafing and the second one is based on crosstalk avoidance and Hamming code. Results show improvements in the terms of hardware and performance with respect to the state-of-the-art mechanism.