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Fault Resilient Real-Time Design for NoC Architectures

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2 Author(s)
Zimmer, C. ; Dept. of Comput. Sci., North Carolina State Univ., Raleigh, NC, USA ; Mueller, F.

Performance and time to market requirements cause many real-time designers to consider components, off the shelf (COTS) for real-time cyber-physical systems. Massive multi-core embedded processors with network-on-chip (NoC) designs to facilitate core-to-core communication are becoming common in COTS. These architectures benefit real-time scheduling, but they also pose predictability challenges. In this work, we develop a framework for Fault Observant and Correcting Real-Time Embedded design (Forte) that utilizes massive multi-core NoC designs to reduce overhead by up to an order of magnitude and to lower jitter in systems via utilizing message passing instead of shared memory as the means for intra-processor communication. Message passing, which is shown to improve the overall scalability of the system, is utilized as the basis for replication and task rejuvenation. This improves fault resilience by orders of magnitude. To our knowledge, this work is the first to systematically map real-time tasks onto massive multi-core processors with support for fault tolerance that considers NoC effects on scalability on an real hardware platform and not just in simulation.

Published in:

Cyber-Physical Systems (ICCPS), 2012 IEEE/ACM Third International Conference on

Date of Conference:

17-19 April 2012