| 摘要 |
PROBLEM TO BE SOLVED: To prevent a load of a management node from being increased by concentrating execution state update requests from a number of execution nodes.SOLUTION: A management node connected to a plurality of execution nodes comprises: a permanent storage device for recording execution state information of a task formed from a plurality of processing objects; a decentralized task management section which divides the task, assigns the divided tasks to a plurality of execution nodes and requests execution; and an execution state information record update section which receives an execution state update request from an execution node and updates the execution state information of the task recorded in the permanent storage device. In the assignment of the tasks, on the basis of a first time that is a processing time required for processing the processing objects of a unit amount and a second time that is a processing time required for processing the execution state update request, the decentralized task management section determines a difference between the amounts of processing objects to be processed by the tasks assigned to the execution nodes in such a manner that a difference of times of completion between tasks assigned in any arbitrary two execution nodes among a plurality of execution nodes becomes greater than the second time. |
