A transfer device (230) for communicating with a first processing device (110 or 210) and a second processing device (210 or 110) by PCIe is provided. The transfer device (230) is provided with a direct memory access controller (DMAC) (233) for controlling a data transfer from a first memory (120 or 220) of the first processing device to a second memory (220 or 120) of the second processing device; a first transmission descriptor controller (235 or 237) for acquiring, from the first processing device, information relating to a first memory address in the first memory at which the data to be transferred is stored; and a first reception descriptor controller (234 or 236) for acquiring, from the second processing device, information relating to a second memory address in the second memory at which the data to be transferred should be stored.