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SmolLM3-3B-HXQ (GGUF)

Native GGUF HXQ_AFFINE_6 quantization of SmolLM3-3B for llama.cpp.

6.28 bits per weight, calibration-free affine quantization. Runs at Q8_0 parity speed (28.3 vs 28.4 tok/s) at 26% smaller size.

Quick Start

# With llama.cpp (HXQ fork)
./llama-cli -m smollm3-3b-hxq-affine6.gguf -p "Explain quicksort:" -n 128

Benchmarks (Quadro T2000 4GB)

Quant BPW Size PPL (WikiText-2) vs Q8_0 tg128 tok/s
Q8_0 8.50 3.04 GiB 9.399 baseline 28.4
HXQ_AFFINE_6 6.28 2.25 GiB 9.520 +1.28% 28.3
Q4_K_M 4.96 1.78 GiB 9.656 +2.72% 44.0

Details

  • Source: HuggingFaceTB/SmolLM3-3B (safetensors β†’ F16 GGUF β†’ HXQ_AFFINE_6)
  • Quantization: Single-pass F16 β†’ HXQ (no double-quantization)
  • Compatibility: Requires llama.cpp HXQ fork (hxq-affine-type branch)
  • Architecture: SmolLM3 (transformer, 3B parameters)

About HXQ

HXQ is a calibration-free vector quantization method for neural network weights. It uses per-group-128 affine coding to achieve 6.28 bits per weight with minimal perplexity degradation. See HXQ whitepaper for details.

Built by EchoLabs33.

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