Section: Partnerships and Cooperations

National Initiatives


AdeCoDS (2019–2023)

Programming, verifying, and synthesizing Adequately-Consistent Distributed Systems (AdeCoDS).


Université de Paris (project leader), Sorbonne-Université LIP6, ARM, Orange.


The total funding of AdeCoDS from ANR is 523 471 euros, of which 162 500 euros for Delys.


The goal of the project is to provide a framework for programming distributed systems that are both correct and efficient (available and performant). The idea is to offer to developers a programming framework where it is possible, for a given application, (1) to build implementations that are correct under specific assumptions on the consistency level guaranteed by the infrastructure (e.g., databases and libraries of data structures), and (2) to discover in a systematic way the different trade-offs between the consistency level guaranteed by the infrastructure and the type and the amount of synchronization they need to use in their implementation in order ensure its correctness. For that, the project will develop a methodology based on combining (1) automated verification and synthesis methods, (2) language-based methods for correct programming, and (3) techniques for efficient system design.

ESTATE - (2016–2021)

LIP6 (DELYS, project leader), LaBRI (Univ. de Bordeaux); Verimag (Univ. de Grenoble).


ESTATE is funded by ANR (PRC) for a total of about 544 000 euros, of which 233 376 euros for DELYS.


The core of ESTATE consists in laying the foundations of a new algorithmic framework for enabling Autonomic Computing in distributed and highly dynamic systems and networks. We plan to design a model that includes the minimal algorithmic basis allowing the emergence of dynamic distributed systems with self-* capabilities, e.g., self-organization, self-healing, self-configuration, self-management, self-optimization, self-adaptiveness, or self-repair. In order to do this, we consider three main research streams:

(i) building the theoretical foundations of autonomic computing in dynamic systems, (ii) enhancing the safety in some cases by establishing the minimum requirements in terms of amount or type of dynamics to allow some strong safety guarantees, (iii) providing additional formal guarantees by proposing a general framework based on the Coq proof assistant to (semi-)automatically construct certified proofs.

The coordinator of ESTATE is Franck Petit.

RainbowFS - (2016–2020)

LIP6 (DELYS, project leader), Scality SA, CNRS-LIG, Télécom Sud-Paris, Université Savoie-Mont-Blanc.


is funded by ANR (PRC) for a total of 919 534 euros, of which 359 554 euros for DELYS.


RainbowFS proposes a “just-right” approach to storage and consistency, for developing distributed, cloud-scale applications. Existing approaches shoehorn the application design to some predefined consistency model, but no single model is appropriate for all uses. Instead, we propose tools to co-design the application and its consistency protocol. Our approach reconciles the conflicting requirements of availability and performance vs. safety: common-case operations are designed to be asynchronous; synchronisation is used only when strictly necessary to satisfy the application's integrity invariants. Furthermore, we deconstruct classical consistency models into orthogonal primitives that the developer can compose efficiently, and provide a number of tools for quick, efficient and correct cloud-scale deployment and execution. Using this methodology, we will develop an entreprise-grade, highly-scalable file system, exploring the rainbow of possible semantics, and we demonstrate it in a massive experiment.

The coordinator of RainbowFS is Marc Shapiro.


SMART - (2012–2019)

ISIR (Sorbonne Univ./CNRS), LIP6 (Sorbonne Univ./CNRS), LIB (Sorbonne Univ./INSERM), LJLL (Sorbonne Univ./CNRS), LTCI (Institut Mines-Télécom/CNRS), CHArt-LUTIN (Univ. Paris 8/EPHE), L2E (Sorbonne Univ.), STMS (IRCAM/CNRS).


Sorbonne Universités, ANR.


The SMART Labex project aims globally to enhancing the quality of life in our digital societies by building the foundational bases for facilitating the inclusion of intelligent artifacts in our daily life for service and assistance. The project addresses underlying scientific questions raised by the development of Human-centered digital systems and artifacts in a comprehensive way. The research program is organized along five axes and DELYS is responsible of the axe “Autonomic Distributed Environments for Mobility.”

The project involves a PhD grant of 100 000 euros over 3 years.