Wide-Area Resource Monitoring using GridRM and jGMA

In any wide-area distributed system there is a need to communicate and interact with a range of networked devices and services ranging from computer-based ones, to network components, and specialised data sources. This paper describes, GridRM, a standardsbased framework for gathering data and information from resources distributed across the Grid that is independent of any given middleware and that can utilise legacy and emerging monitoring technologies. The first part of the paper introduces GridRM and discusses why such a system is needed. In the second part of the paper we describe GridRM’s architecture; here we focus on the so called Local and Global layers, and also detail jGMA, our wide-area event-based messaging system. We then move on to briefly describe GridRM’s Web portal, which provides a basic demonstration of the system’s ability. In the final part of the paper we summarise and conclude by highlighting our experiences and briefly outline future work.