CSE Colloquia Series: Dr. Arpan Gujarati

Mar 2
11:30 AM

Towards Ultra-Reliable Cyber-Physical Systems: Reliability Analysis of Distributed Real-Time Systems

Abstract: Fully-autonomous cyber-physical systems (CPS) such as autonomous vehicles, drones, and robots today are not engineered as rigorously as aircraft, and thus are not as reliable. In fact, these CPS will likely experience more failures in the future, since they will have a cumulative operation time several orders of magnitude more than that of airplanes. Thus, it is essential that we bring the reliability of today’s commercial aircraft systems (“ultra-reliability”) to the next generation of fully-autonomous CPS. One of the main challenges that needs to be addressed in this regard is ensuring high reliability with minimal cost in the presence of environmental disturbance sources such as electro-magnetic interference and thermal effects. To this end, I will present the first provably safe reliability analysis of Ethernet-based distributed real-time systems in the presence of environmentally-induced Byzantine errors. The analysis helps quantify and systematically evaluate the reliability tradeoffs involved when using different replication schemes. In this talk, I will discuss the key features of our analysis, including how we tackle reliability anomalies and how we quantify a CPS application's inherent robustness to occasional failures, and my plans for future research.


Bio: Arpan is currently a visiting researcher at the University of British Columbia (UBC), Canada. He recently completed his Ph.D. under the supervision of Björn B. Brandenburg at the Max Planck Institute for Software Systems (MPI-SWS), Germany. During his Ph.D, Arpan worked on hard real-time scheduling for multiprocessor platforms, distributed auto-scaling and load balancing for datacenter workloads, and reliability analysis for distributed real-time systems. Prior to joining MPI-SWS, Arpan completed his undergraduate studies in Computer Science at Birla Institute of Technology and Science in Pilani, India (BITS Pilani), and also worked as a Software Engineer in the Cloud Networking Group at Citrix R&D, India. Arpan attended the 2nd Heidelberg Laureate Forum in 2014, and has received a Best Presentation Award, a Best Student Paper Award, and an Outstanding Paper Award for his papers.