Qwopus3.6-27B-v2 - AutoRound Q4_K_M GGUF

Quantized with Intel AutoRound (SignRound optimization) and exported to GGUF for llama.cpp.

Files

File Method Description
Qwopus3.6-27B-v2-Q4_K_M-iter0.gguf AutoRound RTN Round-to-nearest, no optimization
Qwopus3.6-27B-v2-Q4_K_M-iter100.gguf AutoRound iter=100 100 rounds of SignRound SGD optimization

Generation Commands

Iter 0 (RTN, fast)

AR_DISABLE_COPY_MTP_WEIGHTS=1 auto-round \
    --model Jackrong/Qwopus3.6-27B-v2 \
    --scheme W4A16 \
    --format "gguf:q4_k_m" \
    --iters 0 \
    --output_dir ./output

Iter 100 (SignRound optimized, ~1h on RTX PRO 6000)

AR_DISABLE_COPY_MTP_WEIGHTS=1 auto-round \
    --model Jackrong/Qwopus3.6-27B-v2 \
    --scheme W4A16 \
    --format "gguf:q4_k_m" \
    --iters 100 \
    --output_dir ./output

KL Divergence Evaluation

Tested on wikitext-2-raw-v1 (145 chunks, ctx=2048, batch=2048, ngl=99, Blackwell CUDA).

Metric Q8_0 (Ref) Jackrong Q4_K_M AR iter=0 AR iter=100
PPL 6.180 6.380 6.344 6.207
PPL vs Q8_0 +3.24% +2.66% +0.44%
Mean KL Divergence 0.0494 0.0483 0.0435
Median KL Divergence 0.0083 0.0080 0.0075
RMS Δp 5.51% 5.45% 5.13%
Same Top-p 93.57% 93.61% 93.93%
Model Size 27 GB 16 GB 16 GB 16 GB

Key finding: AutoRound iter=100 achieves near-lossless Q4_K_M quantization with only 0.44% PPL degradation vs Q8_0, significantly outperforming standard llama.cpp Q4_K_M (3.24% degradation).

KL Divergence Commands

# Step 1: Generate base logits (Q8_0)
llama-perplexity -m Q8_0.gguf -f wiki.test.raw \
    --save-all-logits q8_0_base.logits -ngl 99 -c 2048 -b 2048

# Step 2: Compute KL divergence
llama-perplexity -m Q4_K_M.gguf -f wiki.test.raw \
    --kl-divergence --kl-divergence-base q8_0_base.logits \
    -ngl 99 -c 2048 -b 2048

Original README from Jackrong/Qwopus3.6-27B-v2-GGUF

(Content below is from the original model card.)


🪐 Qwopus3.6-27B-v2

SFT Release

Reasoning-Enhanced Dense Language Model Fine-Tuned on Qwen3.6-27B

🧬 Trace Inversion & Negentropy 🧠 27B Parameters 🔥 3-Stage Curriculum SFT 🛠️ Vision & Tool-use Support

💡 What is Qwopus3.6-27B-v2?

🪐 Qwopus3.6-27B-v2 is a reasoning-enhanced dense language model built on Qwen3.6-27B-base via the Trace Inversion & Negentropy framework. It's trained on ~14K highly informative samples derived from Claude Opus 4.x reasoning traces, following a 3-stage curriculum spanning context expansion (32K→128K), reasoning strengthening, and tool-use integration.

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