Interconnection Network (IN)

The RCU is directly connected to the crossbar switches and controls inter-node data communications at 12.3GB/s bidirectional transfer rate for both sending and receiving data. Thus the total bandwidth of inter-node network is about 8TB/s. Several data-transfer modes, including access to three-dimensional (3D) sub-arrays and indirect access modes, are realized in hardware. In an operation that involves access to the data of a sub-array, the data is moved from one PN to another in a single hardware operation, and relatively little time is consumed this processing.

IN cabinet which has two switch of 640x640. The signal from PN changes from Serial to Parallel and is inputted int a switching circuit. The Signal which came out from the switching circuit is performed Parallel/Serial conversion. Then, It is sent to PN cabinet. The number of Cables which connects PN cabinet and IN cabinet is 640x130=83200, and the total extension is 2,400Km.