Towards the Interoperability between GTRS and EUMEDGRID

Grid computing enables sharing, selection, and aggregation of a wide variety of geographically distributed computational resources such as supercomputers, clusters, storage systems and data sources. A grid presents them as one unified resource for solving large-scale and data intensive computing applications. A middleware supports applications in distributed computing environments by providing services that enable the interconnectivity and interoperability of applications, systems and machines. Considering the great development of grid systems, aggregation of several national and international grids offer more resources,improve and optimize the results. However, given the diversity of architectures and middlewares, it is important to think about solutions for interoperability between systems. In this paper, we present an architecture for enabling interoperability between the Tunisian national grid GTRS, based on the peer-to-peer middleware XtremWeb-CH, and the grid infrastructure of EU funded project EUMEDGRID based on gLite.In particular, we describe the solution related with the job submission mechanism that allows for users of EUMEDGRID to send jobs to GTRS.A new concept of super worker node is proposed in this work to reach the interoperability between the two grids of GTRS and EUMEDGRID.