OpenAI builds MRC multipath transport

- OpenAI, NVIDIA, AMD, Intel, Microsoft and Broadcom collaborated on MRC, a multipath reliable connection protocol that moves AI data across many parallel network paths. - NVIDIA says MRC was proven on Spectrum‑X Ethernet and can send data over hundreds of paths, cutting the number of switch layers needed for very large GPU clusters. - The design signals transport innovation above commodity Ethernet and invites questions about purpose‑built fabrics for strategic workloads. (blogs.nvidia.com) (the-decoder.com)