Distributed Monitoring of Concurrent and Asynchronous Systems*

In this paper we study the diagnosis of distributed asynchronous systems with concurrency. Diagnosis is performed by a peer-to-peer distributed architecture of supervisors. Our approach relies on Petri net unfoldings and event structures, as means to manipulate trajectories of systems with concurrency. This article is an extended version of the paper with same title, which appeared as a plenary address in the Proceedings of CONCUR2003.*This work was supported by the RNRT project MAGDA2, funded by the Ministère de la Recherche; other partners of the project are France Telecom R&D, Alcatel, Ilog, and Paris- Nord University.