Minimizing the system impact of router faults by means of reconfiguration and adaptive routing |
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| Affiliation: | 1. Technische Universität Wien, Vienna, Austria;2. University of Electronics Science and Technology of China, Chengdu, Sichuan, PR China;3. Royal Institute of Technology, Sweden and University of Turku, Finland;4. Institute of Computer Technology, Technische Universität Wien, Vienna, Austria;1. Computer Engineering Department, Iran University of Science and Technology, Tehran, Iran;2. Computer Engineering Department, Bilkent University, Ankara, Turkey;1. Department of Computer Science and Information Engineering, National Taitung University, Taiwan;2. School of Computing Informatics and Decision Systems Engineering, Arizona State University, USA;3. Department of Computer Science and Information Engineering, National Chung Cheng University, Taiwan;1. School of Electronic Engineering, Griffith University, 170 Kessels Road, Nathan, Brisbane, QLD 4111, Australia;2. School of Applied Psychology, Griffith University, Mt Gravatt Campus, Kessels Road, Brisbane, QLD 4111, Australia;1. Eindhoven University of Technology, Postbus 513, 5600MB Eindhoven, The Netherlands;2. Intel Benelux B.V., Capronilaan 37, 1119NG Schiphol-Rijk, The Netherlands;1. OFFIS – Institute for Information Technology, Oldenburg, Germany;2. University of Cantabria, Santander, Spain;3. Politecnico di Milano, Italy;4. STMicroelectronics, Italy;5. Vodafone Automotive Telematics, Switzerland;6. Eurotech, Italy;7. Politecnico di Torino, Italy;8. Intecs, Italy;9. GMV, Spain;10. KTH Royal Institute of Technology, Stockholm, Sweden;11. EDALab s.r.l., Italy |
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| Abstract: | To tolerate faults in Networks-on-Chip (NoC), routers are often disconnected from the NoC, which affects the system integrity. This is because cores connected to the disabled routers cannot be accessed from the network, resulting in loss of function and performance. We propose E-Rescuer, a technique offering a reconfigurable router architecture and a fault-tolerant routing algorithm. By taking advantage of bypassing channels, the reconfigurable router architecture maintains the connection between the cores and the network regardless of the router status. The routing algorithm allows the core to access the network when the local router is disabled.Our analysis and experiments show that the proposed technique provides 100% packet delivery in 100%, 92.56%, and 83.25% of patterns when 1, 2 and 3 routers are faulty, respectively. Moreover, the throughput increases up to 80%, 46% and 33% in comparison with FTLR, HiPFaR, and CoreRescuer, respectively. |
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