There’s a little bit of detail here:
https://developer.nvidia.com/blog/turbocharging-ai-workloads-with-nvidia-spectrum-x-networking-platform/


They run some sort congestion control on the BlueField-3 chip all synchronized across the fabric or something. 

On Sun, Jun 4, 2023 at 6:44 PM Dave Taht via Bloat <bloat@lists.bufferbloat.net> wrote:
sayeth nvidia. Anyone got a clue as to how?

https://www.zdnet.com/article/nvidia-unveils-new-kind-of-ethernet-for-ai-grace-hopper-superchip-in-full-production/

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Dave Täht CSO, LibreQos
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