Pierre Sens

Pierre Sens is a Professor at Sorbonne University, where he leads the DELYS group (formerly Regal) – a joint research team with Inria Paris. His work focuses on distributed systems and fault tolerance, with applications to cloud computing, dynamic networks, and large-scale data storage. He has served on program committees for major conferences like DISC, ICDCS, and IPDPS, and as General Chair for SBAC and EDCC.

• PhD in Computer Science (1994) and HDR (2000) from Paris 6 University (UPMC)
• Advisor to 22 PhD theses since 1999, including recent work on secure DNS architectures and dynamic group maintenance
• Over 140 publications in journals and conferences, with recent contributions to stream processing, federated learning, and Byzantine fault tolerance

His research explores failure detection in asynchronous networks, resilient distributed algorithms, and adaptive resource management in volatile environments. Key themes include causal broadcast, leader election in MANETs, and predictive replication models. He has developed protocols like Stab-FD (cooperative failure detection) and OMAHA (message aggregation for phase-based algorithms), with applications to cloud systems, edge networks, and peer-to-peer infrastructures.

His scientific contributions span theoretical work (e.g., weakest failure detectors for Byzantine systems) and practical implementations (e.g., Pastis file system for peer-to-peer networks). He emphasizes dynamic adaptation in mobile and heterogeneous systems, addressing challenges in distributed mutual exclusion, NUMA virtualization, and video streaming optimization. Collaborations with teams in France, Brazil, and India further highlight his international impact.