We have developed the Grid Service Platform (GSP), which is a grid middleware for telecom carriers. GSP can support not only non-interactive batch style services, but also interactive real-time services. Moreover, GSP attains autonomous resource sharing between services based on the priority of each service. We conducted a field trial of GSP on a testbed that consisted of three sites in Japan and France. Two different types of services were implemented on GSP: a video conferencing service (interactive) and a batch queuing service (non-interactive). As a result, the performance of both services were simultaneously enhanced. The session capacity of the video conferencing service was improved by up to 30%, while the total execution time of batch jobs was reduced by 12%.
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