NVIDIA Spectrum-X — the Open, AI-Native Ethernet Fabric — Sets the Standard for Gigascale AI, Now With MRC
Nvidia AI Blog / 5/6/2026
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Key Points
- NVIDIA positions its Spectrum-X Ethernet scale-out fabric as an open, AI-native networking solution designed to support gigascale AI training environments with high performance and resilience.
- Multiple industry leaders, including OpenAI and Microsoft (along with Oracle), are highlighted as deployments and collaborators relying on advanced AI networking.
- The article emphasizes OpenAI’s introduction of Multipath Reliable Connection (MRC), an RDMA transport protocol that uses a single RDMA connection to spread traffic across multiple network paths.
- MRC is presented as improving throughput, load balancing, and availability, helping reduce typical network-related slowdowns and interruptions during large-scale training.
- A successful rollout of MRC in NVIDIA’s Blackwell generation is cited, enabled by collaboration with NVIDIA and described as maintaining efficiency at frontier training scale.
The race to build the world’s most powerful AI factories demands networking that keeps pace with the ambitions of AI itself. NVIDIA Spectrum-X Ethernet scale-out infrastructure stands at the forefront of that race as the most advanced AI networking technology available today, deployed by industry leaders who can’t afford to compromise on performance, resilience or […]
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