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Focusing on the fact that the grid users may require various QoS and have quite different preferences on each QoS, a User Preference Driven Approach(UPDA) is proposed to schedule grid tasks with multi-QoS constraints. In UPDA, user's needs and preferences are modeled into matrixes to serve as the basis of scheduling and Analytical Hierarchy Process(AHP) method is adopted to perform a pair wise comparison...
In this paper we put forward a gird-based integration model (GBIM) for uniformly accessing heterogeneous database systems. In GBIM database operations are registered as grid services by different sites and a uniformly standard interface is provided to different users. In GBIM every database site is autonomous and its structure and position are transparent to users. GBIM makes use of GSI (grid security...
Focusing on the fact that the collection of independent tasks to be scheduled onto the grid is always on a large-scale, a conception of task partition is proposed to group tasks exclusively according to the machine that gives the earliest completion time. As a result, several tasks in different task partitions can be scheduled at the same time, which reduces the range of task searching and eliminates...
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