The present paper describes a parallel unstructured-mesh Plasma simulation code based on Finite Volume method. The code dynamically refines and coarses mesh for accurate resolution of the different features regarding the electron density. Our purpose is to examine the performance of a new Parallel Adaptive Mesh Refinement (PAMR) procedure introduce...
Literature shows that trust typically relies on knowledge about the communication partner. Federated learning is an approach for collaboratively improving machine learning models. It allows collaborators to share Machine Learning models without revealing secrets, as only the abstract models and not the data used for their creation is shared. Federa...
While consensus is at the heart of many coordination problems in asynchronous distributed systems prone to process crashes, it has been shown to be impossible to solve in such systems where processes communicate by messagepassing or by reading and writing a shared memory. Hence, these systems must be enriched with additional computational power for...
This paper explores how reliable broadcast can be implemented when facing a dual adversary that can both corrupt processes and remove messages.More precisely, we consider an asynchronous $n$-process message-passing systems in which up to $t_b$ processes are Byzantine and where, at the network level, for each message broadcast by a correct process, ...
HPC systems have experienced significant growth over the past years, with modern machines having hundreds of thousands of nodes. Message Passing Interface (MPI) is the de facto standard for distributed computing on these architectures. On the MPI critical path, the message-matching process is one of the most time-consuming operations. In this proce...
Edge computing is a new paradigm in which data are locally collected, aggregated and preprocessed before being sent to a Cloud platform. Edge devices, typically IoT objects, are characterized by limited computational capabilities, alongside high energy efficiency operations. In smart building or smart city applications, the overall amount of availa...
This paper considers the good-case latency of Byzantine Reliable Broadcast (BRB), i.e., the time taken by correct processes to deliver a message when the initial sender is correct, and an essential property for practical distributed systems. Although significant strides have been made in recent years on this question, progress has mainly focused on...
Wi-Fi networks are extensively used to provide Internet access to end-users and to deploy applications at the edge. By playing a major role in modern networking, Wi-Fi networks are getting bigger and denser. However, studying their performance at large-scale and in a reproducible manner remains a challenging task. Current solutions include real exp...
Ethereum has undergone a recent change called the Merge, which made Ethereum a Proof-of-Stake blockchain shifting closer to BFT consensus. Ethereum, which wished to keep the best of the two protocols designs (BFT and Nakomoto-style), now has an involved consensus protocol as its core. The result is a blockchain being possibly produced in a tree-lik...
Ce document a pour objectif de rassembler les connaissances actuelles liées aux impacts environnementaux de la 5G.Il s’articule autour de questions liées à ces impacts. Pour cela, il est organisé en trois partie. La première présentée icidonne les bases nécessaires à la compréhension de la technologie elle-même. La deuxième détaillera les services ...
