Optical interconnection subsystem used in the RWC-1 massivelyparallel computer

摘要

Optical interconnection between the nodes of the RWC-1 massivelynparallel computer has been implemented. A one-node testbed system and anneight-node parallel processing system have been produced to demonstratenlarge-throughput small-skew low-latency and highly reliable opticalninternode connection. Each node was interconnected through dc-coupledn24-bit synchronized parallel optical interconnection at 100 MHz usingn50-m-long single-mode ribboned fibers. The skew in a 24-bit data signalnwas suppressed to within 650 to -380 ps, and the OE/EO conversion delayntime was 15.2 ns. We ran a parallel-processing program on the eight-nodensystem as an evaluation, and the 50-m-long optically interconnectednsystem performed as well as a 10-m-long electrically interconnectednsystem. This clearly shows that optical interconnection will overcomenthe communication bottleneck in multinode computer systems