It adopted the pseudo-random proportional rule, renewed global pheromone after the tasks were executed, and renewed local pheromone before the tasks were preassigned to the grid resource.

• 该算法采用伪随机比例规则，不仅在网格计算资源完成任务后进行信息素的整体更新，还要求预分配网格计算资源时进行信息素的局部更新。