Slides available here!

Speaker:

Dr. Giovanni Beltrame, École Polytechnique de Montréal, Canada

Title:

Trading Off Lifetime, Fault-tolerance, and Power Consumption in Real-time MPSoC

Abstract:

Reliability and fault-tolerance are essential requirements of critical, autonomous computing systems. We propose a methodology to quantify, and maximize, the reliability of computation in the presence of transient errors when considering the mapping of real-time tasks on an heterogeneous multiprocessor system with voltage and frequency scaling capabilities. As the likelihood of transient errors is environment- and component-specific, we use machine learning to estimate the actual fault-rate of the system. Furthermore, we leverage probability theory to define a trade-off between device lifetime, power consumption and fault-tolerance. If a processing element fails, our methodology is able to re-map the application, establishing whether the real-time requirements will still be met, and how reliable the new, impaired system will be. Results show that the proposed methodology is able to adjust mapping and operating frequencies in order to maintain a fixed level of reliability for different fault-rates.

Bio:



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