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The technology for high–performance long–distance transmission has significant strategic value in the context of China's "East Data, West Calculation" project, which aims to construct a nationwide integrated computing network. Three trends are driving new requirements for the paradigm of wide–area distributed computing power coordination: 1) the rise of AI large–scale model intelligent applications that demand extremely high computing resources, 2) the embargo on high–performance GPU chips limiting single–center computing power resources, and 3) the formation of a dispersed computing power distribution pattern due to the establishment of computing clusters across various regions in China. High–performance long–distance transmission technology is crucial for this new paradigm. This paper discusses five aspects: supporting the new paradigm of wide–area distributed computing resource coordination, technical routes, underlay networks, challenges, and costs. Based on the results of a real–network experiment spanning 2100 kilometers from Shenzhen to Zhongwei in Ningxia, the authors believe that optimizing existing RDMA technology for long–distance transmission over wide–area optical networks is one of the most feasible and cost–effective solutions in the short term. By optimizing RoCE (RDMA over Converged Ethernet) over wide–area optical networks, it is possible to achieve "optical direct access to data in WAN" approaching physical layer communication performance indicators.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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