A control device is coupled to node devices and one or more input and output devices, each node device including an arithmetic processing unit and a memory. The control device is configured to store history information including an entry in which device identification information for identifying the input and output device that is accessed based on a request corresponds to node identification information for identifying a node device of the node devices which is a transmission source of the request; determine the node identification information corresponding to the device identification information that indicates an input and output device which outputs a memory access request to the memory based on search of the entry in the history information; generate a packet in which the determined node identification information is set to a memory access destination based on the memory access request; and output the generated packet.