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...
Communications are a critical part of HPC simulations, and one of the main focuses of application developers when scaling on supercomputers. While classical message passing (also called two-sided communications) is the dominant communication paradigm, one-sided communications are often praised to be efficient to overlap communications with computat...
In several real \emph{Multi-Agent Systems} (MAS), it has been observed that only weaker forms of\emph{metastable consensus} are achieved, in which a large majority of agents agree on some opinion while other opinions continue to be supported by a (small) minority of agents. In this work, we take a step towards the investigation of metastable consen...
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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...
International audience
The full article is available on arxiv. / International audience
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...
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Main Findings : • As a general remark, both loop transformations, unroll and tiling can yield significant improvements to the performance of the kernel evaluated on all GPUs evaluated.• Performance gains ranged from 1.13x to 2.93x. In most scenarios, the best performance was achieved by combining unroll and tiling.• The performance of tiling is hig...
