arXiv Computer Vision By Yuan Liao, Jae-sun Seo

MiX: Micro-Inverted-Scaling for End-to-End Low-Bit Vision-Language Model Acceleration

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The paper introduces MiX, a micro‑inverted‑scaling format that replaces shared exponents with shared mantissas to avoid microscaling collapse in low‑bit vision‑language models. An adaptive dual‑format inference framework (MiX‑MX) maps this format to a custom accelerator, replacing multipliers with shifters. Experiments show 4.5‑bit MiX matches or outperforms NVFP4 accuracy while improving area efficiency by 25 % and delivering 2.3–4.5× speedup with 1.4–2.9× energy savings over the Focus accelerator.

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MiX: Micro-Inverted-Scaling for End-to-End Low-Bit Vision-Language Model Acceleration

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