# Unlocking large scale AI training networks with MRC (Multipath Reliable Connection)

DevFeed: [Unlocking large scale AI training networks with MRC (Multipath Reliable Connection)](<https://devfeed.tech/articles/unlocking-large-scale-ai-training-networks-with-mrc-multipath-reliable-connection-6539.md>)

Original publisher: [Read original article](<https://openai.com/index/mrc-supercomputer-networking>)

Published: 2026-05-05T10:00:00Z

Content type: article

Language: en

Sources: [OpenAI News](<https://devfeed.tech/sources/openai-news.md>)

Topics: [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [networking](<https://devfeed.tech/topics/networking.md>), [Networks](<https://devfeed.tech/topics/networks.md>), [Resilience](<https://devfeed.tech/topics/resilience.md>), [GPU](<https://devfeed.tech/topics/gpu.md>), [Network](<https://devfeed.tech/topics/network.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>), [OpenAI](<https://devfeed.tech/topics/openai.md>), [Routing (disambiguation)](<https://devfeed.tech/topics/routing.md>), [stargate](<https://devfeed.tech/topics/stargate.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [ecosystem](<https://devfeed.tech/tags/ecosystem.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [gpu](<https://devfeed.tech/tags/gpu.md>), [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [network-design](<https://devfeed.tech/tags/network-design.md>), [networking](<https://devfeed.tech/tags/networking.md>), [networks](<https://devfeed.tech/tags/networks.md>), [openai](<https://devfeed.tech/tags/openai.md>), [resilience](<https://devfeed.tech/tags/resilience.md>), [routing](<https://devfeed.tech/tags/routing.md>), [stargate](<https://devfeed.tech/tags/stargate.md>), [systems](<https://devfeed.tech/tags/systems.md>), [technology](<https://devfeed.tech/tags/technology.md>)

## AI overview

OpenAI introduces MRC (Multipath Reliable Connection), a protocol designed to improve performance and resilience in GPU networks supporting large-scale AI model training. Released through the Open Compute Project, MRC uses multi-plane networks, adaptive packet spraying, and static source routing to reduce congestion, tolerate failures, and simplify network design.

## Source excerpt

OpenAI introduces MRC (Multipath Reliable Connection), a new supercomputer networking protocol released via OCP to improve resilience and performance in large-scale AI training clusters.