Communication device, information processing system, and communication method

[0031]First, a communication device according to an example embodiment of the present invention will be described with reference to the drawings. The communication device of the present example embodiment is mounted in an information processing device based on a technology capable of extending PCI Express (registered trademark, hereinafter also referred to as PCIe) to a fabric (PCI: Peripheral Component Interconnect). In the present example embodiment, a memory space is virtually extended by using an identifier uniquely assigned to each device like a media access control (MAC) address as high-order bits of the memory space. In the present example embodiment, non-transparent bridging (NTB) is performed based on a virtual address.

[0032](Configuration) FIG. 1 is a block diagram illustrating an example of a general configuration of a communication device 100 according to the present example embodiment. As illustrated in FIG. 1, the communication device 100 includes a PCIe device 110, a req