Setting up of a 16xGB10 (DGX Spark) cluster

Reddit r/LocalLLaMA News

Summary

A user is setting up a 16-node DGX Spark cluster to run frontier open models locally, discussing networking tradeoffs between 200 and 100 Gbit/s.

Preparing this to be able to run locally frontier level open models. Deepseek v4 pro, Kimi K3, future ones like GLM 5.5 and Minimax M4. 16x Asus GX10 linked by mikrotik crs804-4ddq with 4 breakout cables of 400 to 100gbit. Most probable I will be running 2 models on 8x cluster each but I want to have the possibility to run also 2T+ models when I need them to run AGI at home :)). https://x.com/i/status/2083568340870570208 P.S. I need a bigger switch. Going from 200 to 100gbit doesnt hurt token gen, 2% diff, but slows down prefill speed to -20%.
Original Article

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