Instructions to use nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8 with Transformers:

# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("image-text-to-text", model="nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8")
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
pipe(text=messages)

# Load model directly
from transformers import AutoProcessor, AutoModelForMultimodalLM

processor = AutoProcessor.from_pretrained("nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8")
model = AutoModelForMultimodalLM.from_pretrained("nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8", device_map="auto")
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
inputs = processor.apply_chat_template(
	messages,
	add_generation_prompt=True,
	tokenize=True,
	return_dict=True,
	return_tensors="pt",
).to(model.device)

outputs = model.generate(**inputs, max_new_tokens=40)
print(processor.decode(outputs[0][inputs["input_ids"].shape[-1]:]))

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8 with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8",
		"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/nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8

SGLang

How to use nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8 with SGLang:

Install from pip and serve model

# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
    --model-path "nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8",
		"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 images

docker run --gpus all \
    --shm-size 32g \
    -p 30000:30000 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=<secret>" \
    --ipc=host \
    lmsysorg/sglang:latest \
    python3 -m sglang.launch_server \
        --model-path "nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8",
		"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"
						}
					}
				]
			}
		]
	}'

Docker Model Runner
How to use nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8 with Docker Model Runner:
```
docker model run hf.co/nivvis/Qwen3.5-122B-A10B-heretic-v2-FP8
```

Which framework was used for FP8 quantization? LLM-compressor?

by traphix - opened Mar 23

Discussion

traphix

Mar 23

Which framework was used for FP8 quantization? LLM-compressor?

nivvis

Owner Mar 23

•

edited Mar 23

No, unfortunately it had to be custom but is 100% faithful to llm-compressor. The story is a little convoluted tbh. Are you looking to repro? or understand?

TLDR llm-compressor has some issues around transformer version (they are pinned way back), so can't use llm-compressor with qwen 3.5 (at least MoE? forgetting). So I had claude carefully rebuild & verify llm-compressor's fp8 algo against Qwen's known, released fp8s. Could

I did basically test its JS divergence (Jensen-Shannon > KL), but long story*. Anyway I'm pretty confident it's working as expected though.

*was doing fp16 -> nvfp4 quants .. being lazy i tested my fp8 -> nvfp4 divergence and fp8 checks out as basically being truth for fp16. Will try to run more formal JSD if I find the time.

LMK if that would be helpful to release. It's a bear to get FP8 & NVFP4 up tbh .. lot's of dependency hell trying to get vllm/sglang running with these models.

details here
https://gist.github.com/nikdavis/ed443d8bfce82a720a88556e11332741

traphix

Mar 23

•

edited Mar 24

Releasing this quantized model is very helpful.

I am looking to repro.

I'll carefully read your article first

https://gist.github.com/nikdavis/ed443d8bfce82a720a88556e11332741

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