I have given a talk the 2021-01-27 to the researchers of the Inria Spirals research group in Lille. More details in “talks”!
Title: Toward Safe and Efficient Reconfiguration with Concerto
Abstract: For large-scale distributed systems that need to adapt to a changing environment, conducting a reconfiguration is a challenging task. In particular, efficient reconfigurations require the coordination of multiple tasks with complex dependencies. We present Concerto, a model used to manage the lifecycle of software components and coordinate their reconfiguration operations. Concerto promotes efficiency with a fine-grained representation of dependencies and parallel execution of reconfiguration actions, both within components and between them. In this paper, the elements of the model are described as well as their formal semantics. In addition, we outline a performance model that can be used to estimate the time required by reconfigurations, and we describe an implementation of the model. The evaluation demonstrates the accuracy of the performance estimations, and illustrates the performance gains provided by the execution model of Concerto compared to state-of-the-art systems.
The SeMaFoR (Self Management of Fog Resources) project has been accepted by the French national research agency (ANR) and will start in march 2021 for four years. The project is led by Thomas Ledoux. I am the leader of the work package on decentralized reconfiguration.
Since the first of September 2020, I am 20% adjunct professor at the University of Tromsø in Norway for two years. My missions is to work on the DAO project leaded by Otto Anshus. I will bring my expertise in automatic and dynamic adaptations and reconfigurations of distribuetd software systems.
The new engineer apprenticeship training “Industry of the Future” at IMT Atlantique (FIT) has been accepted and will open in October 2020! Hélène Coullon is the head of the computer science domain in this new training!
The paper entitled “Predictable Efficiency for Reconfiguration of Service-Oriented Systems with Concerto”, written by Maverick Chardet, Hélène Coullon and Christian Perez has been accepted to CCGrid 2020 ! Maverick will present this paper in Melbourne, Australia !
The paper entitled “Online Multi-User Workflow Scheduling Algorithm for Fairness and Energy Optimization”, written by Emile Cadorel, Hélène Coullon and Jean-Marc Menaud has been accepted to CCGrid 2020 ! Emile will present this paper in Melbourne, Australia !
The paper entitled “Integrated Model-checking for the Design of Safe and Efficient Distributed Software Commissioning”, written by Didier Lime, Claude Jard and I, has been accepted to iFM 2019 ! I will present this paper in Bergen, Norway !
The paper entitled “A workflow scheduling deadline-based heuristic for energy optimization in Cloud”, written by Emile Cadorel, Jean-Marc Menaud and I, has been accepted to GreenCom 2019 ! Emile Cadorel will present this paper in Atlanta !
I have won a research grant from France Brevets after a pitch contest at the 5G event organized by IMT and Qualcomm.