将带查询序列分成k段，可将待比对序列的索引表分成几部分，并将这几部分分别存放于几台计算机节点上。在每一台计算机节点上，源序列的子序列都只与本地的索引表中的每一子序列进行比较，而各计算机节点上的比较过程是同时执行的，这就将串行的比较过程变成了并行的比较过程-take the query sequence into k segments, can be compared to the sequence of the index table is divided into several parts, and these parts are stored on several computers node. Sequences on each computer node, the source sequence of only the local index table each sub-sequences were compared, and the comparison process on each computer node is performed simultaneously, which the serial comparison process become a parallel comparison process