| import sys | |
| sys.path.insert(1, '/workspace/asr/peft/src') | |
| # TODO set this path to the lazy-lora source code path, or you can install it from source code: | |
| # TODO, please install lazylora for usage: | |
| # git clone [email protected]:Xianchao-Wu/peft.git | |
| # cd peft | |
| # python setup.py install | |
| from transformers import AutoTokenizer, AutoModelForCausalLM, BitsAndBytesConfig | |
| from peft import PeftModel, PeftConfig | |
| import os | |
| import torch | |
| #import ipdb; ipdb.set_trace() | |
| cache_dir="/workspace/asr/peft/qlora" | |
| # TODO set this cache_dir to the path where you stored (or, want to store) llama2-7bhf model | |
| lazylora_dir=os.getcwd() # the path that contains 'adapter_config.json' and 'adapter_model.bin' | |
| config = PeftConfig.from_pretrained(lazylora_dir) | |
| tokenizer = AutoTokenizer.from_pretrained( | |
| config.base_model_name_or_path, | |
| cache_dir=cache_dir, | |
| use_auth_token=True | |
| ) | |
| bnb_config = BitsAndBytesConfig( | |
| load_in_4bit=True, | |
| bnb_4bit_use_double_quant=True, | |
| bnb_4bit_quant_type='nf4', | |
| bnb_4bit_compute_dtype=torch.bfloat16 | |
| ) | |
| model = AutoModelForCausalLM.from_pretrained( | |
| config.base_model_name_or_path, | |
| quantization_config=bnb_config, | |
| device_map="auto", | |
| cache_dir=cache_dir, | |
| use_auth_token=True | |
| ) | |
| #model.print_trainable_parameters() | |
| print(sum(p.numel() for p in model.parameters())) | |
| # 3,500,412,928 -> half-size of 7B due to 4-bit loading | |
| model = PeftModel.from_pretrained(model, lazylora_dir) | |
| print('after adding lazy lora parameters:') | |
| model.print_trainable_parameters() | |
| # trainable params: 0 || all params: 3,660,359,168 || trainable%: 0.0 | |