This disclosure provides a scheduling method, a scheduler, a storage medium, and a system, and belongs to the field of communications technologies. The method includes: obtaining an association relationship diagram and data distribution information, where each node in the association relationship diagram indicates one piece of data, and each directed edge is used to indicate an operation request for obtaining, through calculation based on data indicated by a source node, data indicated by a destination node; sequentially positioning, according to a preset node sorting policy, an operation request corresponding to a traversed node to any server in which data indicated by the traversed node is located; and sequentially scheduling at least one operation request indicated by the at least one directed edge to a server to which the at least one operation request is positioned. The method could be used to reduce the cross-node data transmission, and improving calculation efficiency.