How to use from
vLLM
Install from pip and serve model
# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "gsrunion/Qwen3.6-35B-A3B-ROCmFP4-STRIX_LEAN-GGUF"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "gsrunion/Qwen3.6-35B-A3B-ROCmFP4-STRIX_LEAN-GGUF",
		"messages": [
			{
				"role": "user",
				"content": [
					{
						"type": "text",
						"text": "Describe this image in one sentence."
					},
					{
						"type": "image_url",
						"image_url": {
							"url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg"
						}
					}
				]
			}
		]
	}'
Use Docker
docker model run hf.co/gsrunion/Qwen3.6-35B-A3B-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP
Quick Links

Qwen3.6-35B-A3B — ROCmFP4 STRIX_LEAN quant for AMD Strix Halo

Q4_0_ROCMFP4_STRIX_LEAN GGUF quantization of Qwen/Qwen3.6-35B-A3B (Qwen3.5-MoE architecture, ~3B active, multimodal), produced for AMD Strix Halo (Ryzen AI Max, gfx1151).

⚠️ These files use ROCmFP4 tensor types (ggml type 106) — stock llama.cpp will reject them (invalid ggml type). Use either:

First published STRIX_LEAN of this model as far as I can tell (a ROCMFP4_FAST and an MTP-focused ROCmFP4 exist elsewhere — the STRIX_LEAN recipe trades a hair of file size for the Strix attn-K/V quality layout + Q5_K token embeddings).

Files

File Quant BPW Size Notes
Qwen3.6-35B-A3B-Q4_0_ROCMFP4_STRIX_LEAN.gguf Q4_0_ROCMFP4_STRIX_LEAN 4.29 19.0 GB Fits a 64 GB carve-out with long context to spare
mmproj-BF16.gguf BF16 0.90 GB Vision projector — load alongside the quant
imatrix_unsloth.gguf_file 184 MB Importance matrix used for calibration (from unsloth)

Measured performance

AMD Ryzen AI Max+ 395 (Strix Halo, 128 GB unified LPDDR5X), ROCm backend, kyuz0 rocm-7.2.4-rocmfp4 toolbox, llama-bench -fa 1 --mmap 0:

test tok/s
pp512 1102
tg128 63.1

For reference, the same model as UD-Q4_K_XL runs 48 tok/s on identical hardware — the ROCmFP4 kernels are worth ~+31% decode on Strix Halo.

How it was made

BF16 GGUF source and imatrix from unsloth/Qwen3.6-35B-A3B-MTP-GGUF:

llama-quantize --imatrix imatrix_unsloth.gguf_file \
  Qwen3.6-35B-A3B-BF16-00001-of-00002.gguf \
  Qwen3.6-35B-A3B-Q4_0_ROCMFP4_STRIX_LEAN.gguf \
  Q4_0_ROCMFP4_STRIX_LEAN

(nextn/MTP metadata from the source survives conversion, though speculative decoding showed no speedup on Strix Halo in my testing — plain decode is recommended.)

Serving

llama-server -m Qwen3.6-35B-A3B-Q4_0_ROCMFP4_STRIX_LEAN.gguf \
  --mmproj mmproj-BF16.gguf -ngl 999 -fa on --jinja -c 65536

Companion repos

Credits

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