Qwen2.5 VL 7B Instruct Gemlite Ao A8w8

🚀 A8W8量子化Qwen2.5-VL-7B-Instructモデル

このモデルは、Qwen2.5-VL-7B-InstructをA8W8量子化したもので、TorchAOとGemLiteをバックエンドとして使用しています。

🚀 クイックスタート

📦 インストール

まず、依存関係をインストールします。

pip install torchao;
pip install git+https://github.com/mobiusml/gemlite.git;
pip install qwen-vl-utils[decord]==0.0.8;

💻 使用例

基本的な使用法

from transformers import Qwen2_5_VLForConditionalGeneration, AutoTokenizer, AutoProcessor
from qwen_vl_utils import process_vision_info
import torch

model_id = "mobiuslabsgmbh/Qwen2.5-VL-7B-Instruct_gemlite-ao_a8w8"
model = Qwen2_5_VLForConditionalGeneration.from_pretrained(
    model_id, torch_dtype=torch.float16, device_map="cuda",
    #attn_implementation="flash_attention_2",
)

processor = AutoProcessor.from_pretrained(model_id)

messages = [
    {
        "role": "user",
        "content": [
            {
                "type": "image",
                "image": "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-VL/assets/demo.jpeg",
            },
            {"type": "text", "text": "Describe this image."},
        ],
    }
]

# Preparation for inference
text = processor.apply_chat_template(
    messages, tokenize=False, add_generation_prompt=True
)
image_inputs, video_inputs = process_vision_info(messages)
inputs = processor(
    text=[text],
    images=image_inputs,
    videos=video_inputs,
    padding=True,
    return_tensors="pt",
)
inputs = inputs.to("cuda")

# Inference: Generation of the output
generated_ids = model.generate(**inputs, max_new_tokens=128)
generated_ids_trimmed = [
    out_ids[len(in_ids) :] for in_ids, out_ids in zip(inputs.input_ids, generated_ids)
]
output_text = processor.batch_decode(
    generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False
)
print(output_text)

高度な使用法（VLLMを使用）

import torch
from vllm import LLM
from vllm.sampling_params import SamplingParams

model_id = "mobiuslabsgmbh/Qwen2.5-VL-7B-Instruct_gemlite-ao_a8w8"
processor_args = {
    'limit_mm_per_prompt': {"image": 3}, 
    'mm_processor_kwargs': {"min_pixels": 28 * 28, "max_pixels": 1280 * 28 * 28},
    'disable_mm_preprocessor_cache': False,
}

llm = LLM(model=model_id, gpu_memory_utilization=0.9, dtype=torch.float16, max_model_len=4096, 
           max_num_batched_tokens=4096, **processor_args) 

sampling_params = SamplingParams(max_tokens=1024, temperature=0.5, repetition_penalty=1.1, ignore_eos=False)

messages = [{"content": "You are a helpful assistant", "role":"system"}, {"content":"Solve this equation x^2 + 1 = -1.", "role":"user"}]
outputs = llm.chat(messages, sampling_params, chat_template=llm.get_tokenizer().chat_template)
print(outputs[0].outputs[0].text)

📄 ライセンス

このライブラリはApache-2.0ライセンスの下で提供されています。