A Fault Tolerant Bufferless Optical Interconnection Network

In the high performance computer systems, optical interconnections are being used in recent years for improving the perform-ance. With the increase of the number of nodes in the system, as well as the increasing demand for high bandwidth and low latency, a few error nodes would result in the failures of whole interconnection system. So it is necessary for the optical interconnection to have the fault tolerance capability. A fault tolerant bufferless optical interconnection network named FT-BOIN is brought forward and the corresponding routing algo-rithms are brought forward. In the FT-BOIN, the intermediate nodes need neither to perform O-E/E-O conversion nor to buffer packets. This characteristic greatly improves the performance of the optical network. The simulation shows that FT-BOIN has outstanding fault tolerance performance, and can route packets in the network with nodes failure.