CN5000系列交换机和网卡

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英伟达InfiniBand,迎来新对手
半导体芯闻· 2025-06-10 09:52
Core Viewpoint - Cornelis Networks is reintroducing its Omni-Path interconnect technology with the CN5000 series switches and NICs, aiming to compete with Nvidia's InfiniBand technology, particularly in the AI market, by offering higher performance at a lower cost [1][2][7]. Summary by Sections Overview of Omni-Path - Omni-Path was developed by Intel in 2015 as a lossless interconnect technology, primarily for high-performance computing (HPC) applications, and was initially deployed in several supercomputing platforms [1][2]. CN5000 Series Details - The CN5000 series includes switches and NICs that support 400Gbps bandwidth, with the ability to support over 500,000 endpoints in a cluster, and performance that scales almost linearly [2][4]. - The CN5000 switch options include a 1U high, 48-port switch with a total switching capacity of 19.2Tbps and a Director switch with up to 576 ports and a total bandwidth of 230.4Tbps [4][5]. Performance Comparison with InfiniBand - Cornelis claims its system offers up to 2x message transmission rates, 35% lower latency, and 30% faster simulation times compared to Nvidia's 400Gbps Quantum-2 InfiniBand [7]. - However, the CN5000 switch has fewer ports (48) compared to Nvidia's Quantum-2 (64), which may impact scalability in large deployments [7][9]. Scalability and Network Design - To connect 128,000 GPUs at 400Gbps, approximately 13,334 CN5000 switches would be needed, compared to about 10,000 Nvidia switches [9][10]. - The CN5000 Director switch can reduce the number of switches required for large deployments to 733, thus simplifying wiring [10]. Future Developments - Cornelis plans to launch the CN6000 series with 800Gbps support next year, which will be compatible with Ethernet, allowing for interoperability with other Ethernet devices [13][16]. - The company is also a supporter of the Ultra Ethernet initiative, which aims to modernize Ethernet protocols for HPC and AI applications [15][16]. Market Positioning - Cornelis aims to position its products as cost-effective alternatives to Nvidia's offerings, with a focus on performance and efficiency in AI and HPC environments [7][12].