Qwen3.6-35B-A3B-AutoRound-AWQ-4bit

Chunity/Qwen3.6-35B-A3B-AutoRound-AWQ-4bit

AutoRound 4-bit AWQ quantization of Qwen/Qwen3.6-35B-A3B.

Quantization Summary

• Base model: Qwen/Qwen3.6-35B-A3B
• Quantization: AutoRound -> AWQ
• Scheme: W4A16
• Bits: 4
• Group size: 128
• Iterations: 500
• Output format: auto_awq

What Was Quantized

This checkpoint keeps the multimodal stack intact and focuses AWQ quantization on the language-model blocks.

Quantized:

• model.language_model.layers

Left unquantized where required for functional runtime compatibility:

• lm_head
• linear_attn.*
• self_attn.* on the full-attention layers
• mlp.shared_expert.*
• mlp.shared_expert_gate
• visual tower and merger modules
• MTP tensors were preserved in model_extra_tensors.safetensors

Runtime Notes

This checkpoint was validated on a recent vLLM build that loads it through the awq_marlin path.

Environment used for validation:

export VLLM_USE_DEEP_GEMM=0
export VLLM_USE_FLASHINFER_MOE_FP16=1
export VLLM_USE_FLASHINFER_SAMPLER=0
export OMP_NUM_THREADS=4

Example:

from vllm import LLM

llm = LLM(
    model="Chunity/Qwen3.6-35B-A3B-AutoRound-AWQ-4bit",
    trust_remote_code=True,
    max_model_len=256,
    gpu_memory_utilization=0.95,
    max_num_seqs=1,
    language_model_only=True,
)

Validation

The checkpoint was loaded and exercised with vLLM 0.19.1.

Observed:

• loads successfully as AWQ (awq_marlin)
• coherent factual generation works
• this model family may still emit reasoning-style <think> output depending on prompt formatting and runtime settings

Files

The repo includes:

• AWQ weight shards
• config.json
• quantization_config.json
• tokenizer and processor files
• model_extra_tensors.safetensors for preserved non-exported tensors

Caveat

This is a mixed FP/AWQ export tailored to Qwen3.6's hybrid-attention MoE architecture. The quantization intentionally does not compress every submodule.