A loosely coupled vision for computational grids

Loosely coupled grids allow straightforward resource sharing because resources are accessed and exploited through de facto standard protocols and interfaces, similar to the Internet´s early stages. The loosely coupled model allows easier, scalable, and compatible deployment at a lower global performance expense, compared to a tightly coupled alternative. Because we can apply the end-to-end principle only on both the client and server sides, we can build loosely coupled grid environments based only on Globus services and user-level middleware, while obtaining acceptable quality of service for both grid and local users, and fair resource sharing.