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The efficiency and speedup curves of the parallel SWNI algorithm. Both of the efficiency and speedup are calculated on two samples. One is an network of 1000 nodes and the other is an network of 1500. (A) Efficiency of the algorithm draw dramatically when processors increased from one to four and then tend to stable. (B) The Speedup is close to a straight line with network of 1500 nodes compared to the network of 1000 nodes.
