Abstract: With the development of supercomputers,large-scale numerical computing and big data analysis require increasing demand for high-performance computing capacities.Limited by cost and power consumption,a single supercomputing center cannot expand indefinitely.Interconnection of supercomputers in different places is a good solution.Based on the 10Gbps DWDM fiber optic network from Jinan to Qingdao,a long distance geographically interconnected computing cluster that consisted of the nodes located at Jinan cluster and some nodes at Qingdao cluster is built,which realizes the unified scheduling of computing resources in the two clusters.The ROMS model and WRF model in air-sea coupled model COAWS Tare used to conduct multiple sets of comparative experiments with nodes of varying sizes and locations.Experiments results show that it is feasible to perform coupled numerical simulation on long distance geographically interconnected computing cluster without substantial drop inperformance.Si-mulation results of WRF and ROMS running the same example in Jinan cluster and Jinan-Qingdao cluster are the same.When WRF runs in Jinan cluster and ROMS runs in Qingdao cluster,the running time is 5% more than that when WRF and ROMS both run in Jinan cluster.When WRF and ROMS are split in Jinan-Qingdao cluster,the communication takes up a lot of time.The high-speed interconnection environment is more suitable for coupled model that have low communication requirements.

Key words: High-speed networks, Supercomputing interconnection, Air-Sea coupled, COAWST mode, Distributed computing