We believe that it is interesting to study the system and software architecture of environments which integrate the evolving ideas of computational grids, distributed objects, web services, peer-to-peer networks and message oriented middleware. Such peer-to-peer (P2P) Grids should seamlessly integrate users to themselves and to resources which are also linked to each other. We can abstract such environments as a distributed system of “clients” which consist either of “users” or “resources” or proxies thereto. These clients must be linked together in a flexible fault tolerant efficient high performance fashion. In this paper, we study the messaging or event system – termed GES or the Grid Event Service.
