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AI交换芯片走到聚光灯下：英伟达发布Spectrum-6 或推动Token生成能力倍增_我的网站

一 |     Moscow, Oct 19 (UNI) The commander of Russian forces in Ukraine says the situation in the southern city of Kherson is "difficult" and residents are to be evacuated.

General Sergei Surovikin said Ukrainian troops using Himars rockets were hitting the city's infrastructure and housing. He spoke on Russian state TV.

"The Russian army will above all ensure the safe evacuation of the population" of Kherson, he said.

His rare admission of big problems was echoed by a top local official, the BBC reported.

Russian-installed regional official Kirill Stremousov warned Kherson residents that "in the very near future" Ukrainian troops would launch an assault on the city.

"Please take my words seriously - I'm talking about evacuating as quickly as possible," he said on the Telegram messaging service. He added that people on the River Dnieper's west bank (called Dnipro in Ukraine) were most at risk.

This was confirmed by the region's Governor Vladimir Saldo, who was also appointed by Russia, in a video message.

Kherson was the first big city to fall to the Russians, back in February.

Ukrainian forces have been steadily retaking nearby territory for the past few weeks. They have pushed as far as 30km (19 miles) south along the Dnieper, threatening to trap Russian troops, the BBC said.

"As a whole the situation in the special military operation zone can be described as tense," Gen Surovikin said.

Kherson is the only Ukrainian regional capital to have been captured by the Russians in their invasion. The Kremlin now claims Kherson and three other Ukrainian regions to be part of Russia - a claim rejected internationally.

Gen Surovikin, who has a reputation for harsh methods, said Ukraine's volley of rockets had damaged Kherson's Antonivsky Bridge and the Kakhovka hydroelectric dam, blocking traffic along those key arteries that had created supply problems for essential services, namely food deliveries, water and electricity, he said.

He also said the Ukrainians were launching constant attacks across a wide front - in the areas of Kupiansk and Lyman in the east and, in the south, on the Mykolaiv-Krivyi Rih front.

The scale of the planned "evacuation" from Kherson is not yet clear. If Russia forces people to leave their homes it could constitute a war crime, under the UN's definition, the BBC said.

UNI ING。    《科创板日报》7月22日讯 近日，英伟达正式发布新一代Spectrum-6以太网交换芯片，用于支持基于Vera Rubin平台的超大规模AI基础设施。         英伟达表示，Spectrum-6交换芯片将作为下一代Spectrum-X Ethernet交换机平台核心组件，通过高带宽、智能流量管理和故障恢复能力，提升AI工厂整体计算效率。包括CoreWeave 、微软、Nebius、SpaceXAI和特斯拉在内的AI基础设施建设者，将成为首批引入Spectrum-6来加速其AI工厂建设的公司。         产品性能方面，Spectrum-6单交换容量达102.4Tbps，是上一代产品的两倍，旨在连接数十万级GPU和CPU，为大规模AI训练、智能体应用及推理任务提供网络支持。

二 | 基于此，Spectrum-X以太网交换机能够实现比普通以太网高1.6倍的AI网络性能，并且在超过10万个GPU的部署中保持高达95%的网络效率。         此外，Spectrum-6交换芯片同时支持可插拔式光模块和共封装光学（CPO），并支持液冷散热，可为整个AI工厂提供全面的端到端散热方案，同时提高网络电源效率。         截至目前，基于Spectrum-6的交换机已经进入全面生产阶段，且在全球千兆级AI工厂中普及。         中国银河指出，Spectrum-X Ethernet Photonics是全球首款200G/lane大规模量产的CPO交换机。

三 | Vera Rubin量产Spectrum-X Ethernet Photonics进一步验证光互连在下一代AI数据中心中的价值。硅光子技术渗透率的提升也将同步带动上游光芯片需求的高速增长。         ▌交换机成Token生成倍增器          交换机是一种用于电光信号转发的网络设备，而在英伟达看来，AI性能本质上是网络问题。         其指出，全球最先进的人工智能工厂汇集了数十万个GPU和CPU，用于训练前沿模型、驱动智能体人工智能，并以前所未有的规模生成智能。

四 | 在这个层面上，网络成为推动Token生成的关键计算能力倍增器。         对交换机领域的重视，也让这家科技巨头收获了客户与收入增长。         作为Spectrum-6交换芯片的首批用户，CoreWeave表示：“将英伟达 Spectrum-6和液冷式Spectrum-X以太网基础设施引入AI工厂，有助于我们为客户提供训练前沿模型和更快部署推理所需的带宽、弹性和效率。”          据IDC最新数据，英伟达在2026财年第一季度首次成为全球数据中心以太网交换机市场的营收冠军。在过去，该领域由博通、思科等网络巨头主导。         开源证券表示，从交换芯片和GPU配比来看，传统架构交换机与GPU配比约为3:64，而英伟达NVL72包含72颗GPU和9个交换托盘，GBNVL72柜内交换托盘各配备2颗交换芯片，交换芯片与GPU配比达1:4，最新VRNVL72柜内交换托盘配备交换芯片数翻倍，交换芯片与GPU配比进一步提升至1:2，随着Scaleout和Scaleup双线演进，交换网络在计算集群中所占权重或逐步提升。         该机构强调，交换网络正算力配套设施配角，跃升为集群核心主角。随着AI模型参数扩张，算力需求已从单纯GPU堆叠，转向全维度系统架构重构。受单芯片物理功耗密度、互连带宽及内存容量瓶颈制约，算力增长边际效益持续递减，交换网络成为制约算力的天花板，当前系统级协同架构（如高带宽域互联）是突破单芯片性能上限的主要技术路径。         （科创板日报 张真）。

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