The TETRISC SoC—A resilient quad-core system based on the ResiliCell approach

Abstract

Resilient systems require monitoring and prediction of environmental and intrinsic conditions and the ability to adapt to changing circumstances to optimize the trade-off between performance, power consumption, and fault tolerance. This paper presents an approach for enabling a design to achieve resilience. By using a range of reliability sensors and the novel ResiliCells, we have developed the TETRISC System-on-Chip (SoC), which is a multiprocessor system based on the PULPissimo platform. The TETRISC SoC can operate its four cores in different performance and fault tolerance modes based on real-time data, making it ideal for use cases with dynamically changing and reliability critical requirements, such as avionics or aerospace. Additional in-depth studies on possible optimizations demonstrate the flexibility of the ResiliCell approach.