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zerodigest/Qwen3.8-27B-YMQ-MTP-GGUF

sourceHugging Faceapache-2.0updated 25d agoView on Hugging Face

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Qwen3.8-27B-YMQ-MTP-GGUF

Source Model: Qwen/Qwen3.8-27B

⚖️ An Architecture-Aware, AutoRound-Inspired Mixed Precision Layout

This repository features advanced, custom architecture-aware quantizations of Qwen3.8-27B processed directly from official raw BF16 source files using the custom YMQ-Compiler (v2.0) log-space framework.

These builds natively support parallel multi-token prediction (MTP) speculation engines and utilize high-context optimization parameters tailored for demanding code development API execution environments (such as RooCode/Aider).

📊 Quantization Preset Tier Details

Preset Tier	Total Size	Target Usage / Memory VRAM Profile	Cognitive Real-World Coding Quality
`XXS`	~9.8 GB	Absolute VRAM Squeeze / 12GB Card Lifeline	Massive structural quantization noise. Best restricted to low-context, single-turn instructions. Fits 12GB cards with context cache breathing room.
`XS-TI`	~10.2 GB	⚡ 12GB Card Lifeline (High-Context)	The 12GB Context Champion. Safely pins core attention layers to a stable `IQ3_XXS` gradient while crushing non-critical auxiliary arrays to `IQ2_XS`.
`M-TI`	~12.6 GB	💎 Premium 16GB GPU Workspace Driver	The 16GB Workstation Choice. Employs a robust `Q5_K/IQ4_XS` mixed-precision gradient that protects logical reasoning focus while leaving over 3.4GB of VRAM wide open.
`M`	~14.5 GB	The Ultimate Coding Sweet Spot (Recommended)	Elite logical stability. Complete logic clarity. It crushes standard industry 4-bit alternatives.
`L`	~17.0 GB	Premium Single-GPU Processing / Heavy workloads	Near-lossless instruction formatting. Pristine multi-turn architecture safety.
`XL`	~19.0 GB	Maximum VRAM Fill / No Compromises	Mathematical saturation ceiling. Full precision logic tracks for massive multi-file codebase operations.

📉 Perplexity Evaluation Metrics (WikiText-2)

The following metrics demonstrate the mathematical quality preservation of the YMQ-Compiler log-space cluster analysis compared to standard linear quantization layouts. Tested natively via llama-perplexity over a 4096 context window using the official WikiText-2 test corpus.

Model Variant	File Size	Perplexity	Mean KL-Divergence	Internal Bit Gradient (High ➔ Mid ➔ Low ➔ Default ➔ Floor)
`XXS`	~9.8 GB	7.7848	`0.193804 ± 0.0022`	`IQ3_XXS` ➔ `IQ2_S` ➔ `IQ2_XS` ➔ `IQ2_XS` (No Floor)
`XS-TI`	~10.2 GB	7.6090	`0.168378 ± 0.001935`	`IQ3_XXS` ➔ `IQ3_XXS` ➔ `IQ3_XXS` ➔ `IQ3_XXS` ➔ `IQ2_XXS`
`M-TI`	~12.9 GB	7.0109	`0.104087 ± 0.0016`	`Q5_K` ➔ `IQ4_XS` ➔ `IQ3_S` ➔ `IQ3_XXS` ➔ `IQ2_XXS`
`M`	~14.5 GB	6.8413	`0.053286 ± 0.0013`	`Q5_K` ➔ `IQ4_XS` ➔ `IQ3_S` ➔ `IQ3_XXS` (No Floor)
`L`	~17.0 GB	6.9791	`0.031546 ± 0.0009`	`Q6_K` ➔ `Q5_K` ➔ `IQ4_NL` ➔ `IQ3_S` (No Floor)
`XL`	~19.0 GB	6.8196	`0.011598 ± 0.0005`	`Q6_K` ➔ `Q6_K` ➔ `Q5_K` ➔ `IQ4_NL` (No Floor)

💡 The Core Architectural Discovery

Notice the dramatic performance leap between the S and M presets. The YMQ-Compiler log-space algorithm automatically detects the true data signals on the newly updated Qwen 3.8 hybrid Attention/Mamba routing nodes.

By shifting the quantization boundaries slightly in the `M` preset, the engine safely promotes the model's high-leverage logical spikes straight into full high-fidelity precision layers. This drops the perplexity score down to an elite 6.8413—matching the raw reasoning power of the massive 19GB XL file while clawing back a clean 5 Gigabytes of VRAM overhead cache space for your local agent environments!

⚖️ YMQ vs. Uniform Quantization (The AutoRound Philosophy)

Standard quantization pipelines apply a blunt, uniform bit-depth across every single layer in a model. This wastes valuable VRAM on silent background layers while starving critical logic anchors of necessary precision.

The YMQ-Compiler implements a philosophy similar to advanced weight-tuning frameworks like Intel's AutoRound:

—Targeted Bit Allocation: It strips bits away from low-leverage background tensors and automatically re-allocates that saved VRAM budget straight into full high-fidelity shields for the model's highest cognitive spikes and boundary pathways.
—Instant Optimization: Instead of running heavy, days-long optimization training loops, YMQ achieves a highly accurate mixed-precision layout instantly by analyzing layer importance metrics in log-space.

The result is a custom mixed-precision portfolio that matches the low perplexity and high context stability of premium optimized quants (like AutoRound), while maintaining an ultra-lightweight, high-speed single-GPU cache footprint.

🛠️ The YMQ Compilation Architecture

Standard quantization pipelines treat network tensors like a flat dataset, applying destructive blanket low-bit compression to delicate tracking networks. The YMQ-Compiler solves high-context logic decay by parsing model files dynamically via an automated, multi-tiered protection matrix:

1.Log-Space Gap Detection Clustering: Instead of flat percentage thresholds, the engine computes statistical cluster variances in log-space, successfully isolating intermediate logical reasoning spikes and elevating them to stable non-linear 4-bit (IQ4_XS) formats, while compressing idle fact-storage layers to aggressive 2-bit baselines.
2.Fading Boundary Tapering: Recognizes the extreme fragility of initial token entry data vectors, forcing an input wave cushion (L00=IQ4_NL → L01=IQ4_XS → L02=IQ3_XXS) that gradually stabilizes parameters before hitting the fallback pools.
3.Dedicated Gate Insulation: Hard-shields volatile parallel Transformer Multi-Head Attention and Mamba Linear State Space Model (SSM) routing paths, keeping context tracking perfectly noise-free.
4.Asymmetric Vocabulary Shielding: Fixes tied-weight boundary errors by mapping the final logit classification exit heads to robust configurations to completely eliminate formatting loops and API tag leakage under deep contexts.
5.Native Next-N Speculative Stripping: Processed with advanced pre-tokenizer stripping to ensure zero index offset drift or layer-shifting risks across hybrid configurations.

🚀 Recommended Runtime Parameters (llama.cpp / llama-server)

Need to scale up? Deploy this exact script on on-demand cloud GPUs via [RunPod Cloud Compute](https://runpod.io?ref=dbjmkmeh).

$./llama-server -m models/Qwen3.8-27B-YMQ-M.gguf -ctk q8_0 -ctv q4_0 --ctx-size 245760 --mmproj models/Qwen3.8-27B.mmproj-Q6_K.gguf \
  --spec-type draft-mtp --spec-draft-n-max 2 --timeout 36000 --checkpoint-min-step 2048 --ctx-checkpoints 4 \
  --n-predict -1 --temp 0.6 --top-p 0.95 --top-k 20 --repeat-penalty 1.05 --jinja -fa

🖼️ Vision Projection (`--mmproj`)

For multimodal vision support, pair these builds with one of the following projection files:

Variant	File	Size	Notes
Full Precision (F16)	Qwen3.8-27B.mmproj-f16.gguf	~928 GB	Full-precision native vision tower. Maximum fidelity for image reasoning tasks.
Q6_K	Qwen3.8-27B.mmproj-Q6_K.gguf (this repo)	~587 MB	High-fidelity quantized vision tower. Excellent quality-to-size balance with minimal perceptible degradation.
Q4_K_S	Qwen3.8-27B.mmproj-Q4_K_S.gguf (this repo)	~478 MB	Compact vision projection for VRAM-constrained setups. Retains strong image understanding at reduced footprint.

Pass via --mmproj <path-to-file> in your llama-server invocation (see example above).

☕ Support & Future R&D

If the YMQ-Compiler builds saved your context window from collapsing or optimized your active development cycle speeds, consider buying a coffee to fund further low-level optimization research. Your support keeps the server nodes baking future model scales!

👉 [Support ZeroDigest Research on ko-fi](https://ko-fi.com/zerodigest)

📦 Source Framework & Automation Code

The compiler pipeline automation engine, setup thresholds, and structural mapping rules are open-source. To view the implementation details or compile your own custom models natively using this profile layout, visit the official development hub:

👉 [GitHub: ZeroDigest / YMQ-Compiler](https://github.com/minyor/ymq-compiler)