Many researches have been conducted on systems that consist of heterogeneous machines, such as peer-to-peer computing and GRID system. In heterogeneous system, an important research problem is how to allocate a set of tasks to the computing machine. In this paper, a scheduling algorithm, LSAA, allocate parallel tasks through peer-to-peer, computing was presented, and its effectiveness in the peer-to-peer system was shown by the experimental results. The experiments show that the performance of the scheduling algorithm LSAA is better than the performances of previous algorithm.
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