A Fault Tolerant Bufferless Optical Interconnection Network

In the high performance computer systems, optical interconnections are being used in recent years for improving the performance. 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 algorithms 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.