Talks

Understanding Power Limiting Mechanisms in Modern Processors

32nd International European Conference on Parallel and Distributed Computing

A deep dive into Intel RAPL and Turbo Boost, and how their interaction governs power capping on modern servers. Joint work with Guillaume Rosinosky, Remous-Aris Koutsiamanis, Sébastien Bolle (Orange Research) and Jean-Marc Menaud.

• Turbo behaviour is driven by the long-term window and the two power limits; the short-term window is negligible.
• A closed-form model predicts the effective turbo duration on four Intel Xeon microarchitectures.
• Capping below 50% of TDP systematically destroys energy efficiency.

Energy-Aware Kubernetes Orchestration for Grid-Responsive Computing

Adapting Kubernetes workloads to electricity grid fluctuations through constraint-based scheduling and dynamic scaling, to cope with electricity price volatility and grid stability in cloud environments.

Intégration de l'Aspect Énergétique dans Kubernetes

Conférence francophone d’informatique en Parallélisme, Architecture et Système

Integrating energy consumption into Kubernetes orchestration, using RAPL measurements to make scheduling aware of the real power draw of servers.

• Energy-aware scheduling strategies
• Monitoring and collecting energy metrics
• Custom Kubernetes schedulers for energy optimisation