Big-MoE-Small-Box: serve 361B DeepSeek and 321B GLM from one 24GB GPU via NVMe experts

casper_hansen_ · x · 2026-11-08

casperhansen open-sourced Big-MoE-Small-Box (Apache-2.0/MIT), serving MoE models far larger than the GPU from one 24GB card, 64GB RAM and an NVMe drive via an OpenAI-compatible server on exllamav3 1.6.6: GLM-5.3-Flash (321B, EXL3 3.05 bpw, 125GB) and DeepSeek-V4.1-Flash (EXL3 2.25 bpw, 361GB incl. 203GB Engram tables). Key idea: each token activates only a few routed experts (8/288 for GLM, 6/384 for DeepSeek), so the routed experts — most of the weights — are packed per layer into fixed-size records read with ODIRECT across a VRAM/RAM/NVMe tier store. Build list: used RTX 3090, 64GB DDR5-5600, WD SN850X, Ryzen 5 7600X. He invites anyone to copy the setup for "sovereign AI at home."

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