lyogavin/airllm

先看结论

AirLLM 70B inference with single 4GB GPU Quickstart | Configurations | MacOS | Example notebooks | FAQ AirLLM dramatically reduces inference memory usage, letting 70B large language models run on a single 4GB GPU card — without quantization, distillation, or pruning. You can even run 405B Llama 3.1 on 8GB, and DeepSeek-V3 (671B) on ~12GB. AI Agents Recommendation: Best AI Game Sprite Generator Best AI Facial Expression Editor Bloome — build & run AI agent teams in the cloud, zero setup Updates [2026/06] v3.0: FP8 model support + the latest models. Run DeepSeek-V3 (671B) on ~12GB and Qwen3-235B on ~3GB, plus Qwen3, Llama 3.x/4, DeepSeek V2/V3, Phi-4, Gemma and more — all through a single AutoModel. [2024/08/20] v2.11.0: Support Qwen2.5 [2024/08/18] v2.10.1 Support CPU inference. Support non sharded models. Thanks @NavodPeiris for the great work! [2024/07/30] Support Llama3.1 405B (example notebook). Support 8bit/4bit quantization. [2024/04/20] AirLLM supports Llama3 natively already. Run Llama3 70B on 4GB single GPU. [2023/12/25] v2.8.2: Support MacOS running 70B large language models. [2023/12/20] v2.7: Support AirLLMMixtral. [2023/12/20] v2.6: Added AutoModel, automatically detect model type, no need to provide model class to initialize model. [2023/12/18] v2.5: added prefetching to overlap the model loading and compute. 10% speed improvement. [2023/12/03] added support of ChatGLM, QWen, Baichuan, Mistral, InternLM! [2023/12/02] added support for safetensors. Now support all top 10 models in open llm leaderboard. [2023/12/01] airllm 2.0. Support compressions: 3x run time speed up! [2023/11/20] airllm Initial version! Star History Table of Contents Quick start Model Compression Configurations Run on MacOS Example notebooks Supported Models Acknowledgement FAQ Quickstart 1. Install package First, install the airllm pip package. pip install airllm 2. Inference Then, initialize AirLLMLlama2, pass in the huggingface repo ID of the model being used, or the local path, and inference can be performed similar to a regular transformer model. (You can also specify the path to save the splitted layered model through layer_shards_saving_path when init AirLLMLlama2. from airllm import AutoModel MAX_LENGTH = 128 # just pass a hugging face repo id — works with almost any popular model: model = AutoModel.from_pretrained("Qwen/Qwen3-32B") # go bigger with the exact same one line: #model = AutoModel.from_pretrained("Qwen/Qwen3-235B-A22B") # 235B, runs in ~3GB #model = AutoModel.from_pretrained("deepseek-ai/DeepSeek-V3") # 671B, runs in ~12GB # or use a model's local path... #model = AutoModel.from_pretrained("/home/ubuntu/.cache/huggingface/hub/models--Qwen--Qwen3-32B/snapshots/...") input_text = [ 'What is the capital of United States?', #'I like', ] input_tokens = model.tokenizer(input_text, return_tensors="pt", return_attention_mask=False, truncation=True, max_length=MAX_LENGTH, padding=False) generation_output = model.generate( input_tokens['input_ids'].cuda(), max_new_tokens=20, use_cache=True, return_dict_in_generate=True) output = model.tokenizer.decode(generation_output.sequences[0]) print(output) Note: During inference, the original model will first be decomposed and saved layer-wise. Please ensure there is sufficient disk space in the huggingface cache directory. Model Compression - 3x Inference Speed Up! We just added model compression based on block-wise quantization-based model compression. Which can further speed up the inference speed for up to 3x , with almost ignorable accuracy loss! (see more performance evaluation and why we use block-wise quantization in this paper) How to enable model compression speed up: Step 1. make sure you have bitsandbytes installed by pip install -U bitsandbytes Step 2. make sure airllm verion later than 2.0.0: pip install -U airllm Step 3. when initialize the model, passing the argument compression ('4bit' or '8bit'): model = AutoModel.from_pretrained("garage-bAInd/Platypus2-70B-instruct", compression='4bit' # specify '8bit' for 8-bit block-wise quantization ) What are the differences between model compression and quantization? Quantization normally needs to quantize both weights and activations to really speed things up. Which makes it harder to maintain accuracy and avoid the impact of outliers in all kinds of inputs. While in our case the bottleneck is mainly at the disk loading, we only need to make the model loading size smaller. So, we get to only quantize the weights' part, which is easier to ensure the accuracy. Configurations When initialize the model, we support the following configurations: compression: supported options: 4bit, 8bit for 4-bit or 8-bit block-wise quantization, or by default None for no compression profiling_mode: supported options: True to output time consumptions or by default False layer_shards_saving_path: optionally another path to save the splitted model hf_token: huggingface token can be provided here if downloading gated models like: meta-llama/Llama-2-7b-hf prefetching: prefetching to overlap the model loading and compute. By default, turned on. For now, only AirLLMLlama2 supports this. delete_original: if you don't have too much disk space, you can set delete_original to true to delete the original downloaded hugging face model, only keep the transformed one to save half of the disk space. MacOS Just install airllm and run the code the same as on linux. See more in Quick Start. make sure you installed mlx and torch you probably need to install python native see more here only Apple silicon is supported Example [python notebook] (https://github.com/lyogavin/airllm/blob/main/air_llm/examples/run_on_macos.ipynb) Example Python Notebook Example colabs here: example of other models (ChatGLM, QWen, Baichuan, Mistral, etc): ChatGLM: from airllm import AutoModel MAX_LENGTH = 128 model = AutoModel.from_pretrained("THUDM/chatglm3-6b-base") input_text = ['What is the capital of China?',] input_tokens = model.tokenizer(input_text, return_tensors="pt", return_attention_mask=False, truncation=True, max_length=MAX_LENGTH, padding=True) generation_output = model.generate( input_tokens['input_ids'].cuda(), max_new_tokens=5, use_cache= True, return_dict_in_generate=True) model.tokenizer.decode(generation_output.sequences[0]) QWen: from airllm import AutoModel MAX_LENGTH = 128 model = AutoModel.from_pretrained("Qwen/Qwen-7B") input_text = ['What is the capital of China?',] input_tokens = model.tokenizer(input_text, return_tensors="pt", return_attention_mask=False, truncation=True, max_length=MAX_LENGTH) generation_output = model.generate( input_tokens['input_ids'].cuda(), max_new_tokens=5, use_cache=True, return_dict_in_generate=True) model.tokenizer.decode(generation_output.sequences[0]) Baichuan, InternLM, Mistral, etc: from airllm import AutoModel MAX_LENGTH = 128 model = AutoModel.from_pretrained("baichuan-inc/Baichuan2-7B-Base") #model = AutoModel.from_pretrained("internlm/internlm-20b") #model = AutoModel.from_pretrained("mistralai/Mistral-7B-Instruct-v0.1") input_text = ['What is the capital of China?',] input_tokens = model.tokenizer(input_text, return_tensors="pt", return_attention_mask=False, truncation=True, max_length=MAX_LENGTH) generation_output = model.generate( input_tokens['input_ids'].cuda(), max_new_tokens=5, use_cache=True, return_dict_in_generate=True) model.tokenizer.decode(generation_output.sequences[0]) To request other model support: here Supported Models AirLLM works out of the box with virtually every popular open LLM — just pass its Hugging Face ID to AutoModel.from_pretrained(...). That covers all the major families: Llama (2 / 3 / 3.1 / 3.3 / 4) · Qwen (1 / 2 / 2.5 / 3, including MoE and FP8) · DeepSeek (V2 / V3 / R1) · Mistral & Mixtral · Phi · Gemma · ChatGLM · Baichuan · InternLM · Yi — and most new models the day they're released. Tiny GPU, huge models The trick: AirLLM only ever keeps one layer on the GPU at a time, so the VRAM you need depends on the model's layer size — not its total size. That's how a 671B model fits on a hobbyist card: Model Size GPU VRAM Qwen3 / Mistral / Phi (≈8B) 8B ~1–2 GB Qwen3-30B / Mixtral (MoE) 30–47B ~1–3 GB Qwen3-235B (MoE) 235B ~3 GB Llama 3.x 70B (full precision) 70B ~4 GB Llama 3.1 405B 405B ~8 GB DeepSeek-V3 671B ~12 GB Same one line of code for all of them — no special setup. Acknowledgement A lot of the code are based on SimJeg's great work in the Kaggle exam competition. Big shoutout to SimJeg: GitHub account @SimJeg, the code on Kaggle, the associated discussion. FAQ 1. MetadataIncompleteBuffer safetensors_rust.SafetensorError: Error while deserializing header: MetadataIncompleteBuffer If you run into this error, most possible cause is you run out of disk space. The process of splitting model is very disk-consuming. See this. You may need to extend your disk space, clear huggingface .cache and rerun. 2. ValueError: max() arg is an empty sequence Most likely you are loading QWen or ChatGLM model with Llama2 class. Try the following: For QWen model: from airllm import AutoModel #<----- instead of AirLLMLlama2 AutoModel.from_pretrained(...) For ChatGLM model: from airllm import AutoModel #<----- instead of AirLLMLlama2 AutoModel.from_pretrained(...) 3. 401 Client Error....Repo model ... is gated. Some models are gated models, needs huggingface api token. You can provide hf_token: model = AutoModel.from_pretrained("meta-llama/Llama-2-7b-hf", #hf_token='HF_API_TOKEN') 4. ValueError: Asking to pad but the tokenizer does not have a padding token. Some model's tokenizer doesn't have padding token, so you can set a padding token or simply turn the padding config off: input_tokens = model.tokenizer(input_text, return_tensors="pt", return_attention_mask=False, truncation=True, max_length=MAX_LENGTH, padding=False #<----------- turn off padding ) Citing AirLLM If you find AirLLM useful in your research and wish to cite it, please use the following BibTex entry: @software{airllm2023, author = {Gavin Li}, title = {AirLLM: scaling large language models on low-end commodity computers}, url = {https://github.com/lyogavin/airllm/}, version = {0.0}, year = {2023}, } Sponsors Run AI Agent Teams in the Cloud — Bloome Bloome is an AI-agent IM platform: build and run AI agent teams in the cloud with zero setup. 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