import sys import torch from peft import PeftModel, PeftModelForCausalLM, LoraConfig import transformers import gradio as gr import argparse import warnings import os from utils import StreamPeftGenerationMixin,StreamLlamaForCausalLM assert ( "LlamaTokenizer" in transformers._import_structure["models.llama"] ), "LLaMA is now in HuggingFace's main branch.\nPlease reinstall it: pip uninstall transformers && pip install git+https://github.com/huggingface/transformers.git" from transformers import LlamaTokenizer, LlamaForCausalLM, GenerationConfig parser = argparse.ArgumentParser() parser.add_argument("--model_path", type=str, default="/model/13B_hf") parser.add_argument("--lora_path", type=str, default="checkpoint-3000") parser.add_argument("--use_typewriter", type=int, default=1) parser.add_argument("--use_local", type=int, default=1) args = parser.parse_args() print(args) tokenizer = LlamaTokenizer.from_pretrained(args.model_path) LOAD_8BIT = True BASE_MODEL = args.model_path LORA_WEIGHTS = args.lora_path # fix the path for local checkpoint lora_bin_path = os.path.join(args.lora_path, "adapter_model.bin") print(lora_bin_path) if not os.path.exists(lora_bin_path) and args.use_local: pytorch_bin_path = os.path.join(args.lora_path, "pytorch_model.bin") print(pytorch_bin_path) if os.path.exists(pytorch_bin_path): os.rename(pytorch_bin_path, lora_bin_path) warnings.warn( "The file name of the lora checkpoint'pytorch_model.bin' is replaced with 'adapter_model.bin'" ) else: assert ('Checkpoint is not Found!') if torch.cuda.is_available(): device = "cuda" else: device = "cpu" try: if torch.backends.mps.is_available(): device = "mps" except: pass if device == "cuda": model = LlamaForCausalLM.from_pretrained( BASE_MODEL, load_in_8bit=LOAD_8BIT, torch_dtype=torch.float16, device_map="auto", #device_map={"": 0}, ) model = StreamPeftGenerationMixin.from_pretrained( model, LORA_WEIGHTS, torch_dtype=torch.float16, device_map="auto", #device_map={"": 0} ) elif device == "mps": model = LlamaForCausalLM.from_pretrained( BASE_MODEL, device_map={"": device}, torch_dtype=torch.float16, ) model = StreamPeftGenerationMixin.from_pretrained( model, LORA_WEIGHTS, device_map={"": device}, torch_dtype=torch.float16, ) else: model = LlamaForCausalLM.from_pretrained( BASE_MODEL, device_map={"": device}, low_cpu_mem_usage=True ) model = StreamPeftGenerationMixin.from_pretrained( model, LORA_WEIGHTS, device_map={"": device}, ) def generate_prompt(instruction, input=None): if input: return f"""Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: {instruction} ### Input: {input} ### Response:""" else: return f"""Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: {instruction} ### Response:""" if not LOAD_8BIT: model.half() # seems to fix bugs for some users. model.eval() if torch.__version__ >= "2" and sys.platform != "win32": model = torch.compile(model) def evaluate( input, temperature=0.1, top_p=0.75, top_k=40, num_beams=4, max_new_tokens=128, min_new_tokens=1, repetition_penalty=2.0, **kwargs, ): prompt = generate_prompt(input) inputs = tokenizer(prompt, return_tensors="pt") input_ids = inputs["input_ids"].to(device) generation_config = GenerationConfig( temperature=temperature, top_p=top_p, top_k=top_k, num_beams=num_beams, bos_token_id=1, eos_token_id=2, pad_token_id=0, max_new_tokens=max_new_tokens, # max_length=max_new_tokens+input_sequence min_new_tokens=min_new_tokens, # min_length=min_new_tokens+input_sequence **kwargs, ) with torch.no_grad(): if args.use_typewriter: for generation_output in model.stream_generate( input_ids=input_ids, generation_config=generation_config, return_dict_in_generate=True, output_scores=False, repetition_penalty=float(repetition_penalty), ): outputs = tokenizer.batch_decode(generation_output) show_text = "\n--------------------------------------------\n".join( [output.split("### Response:")[1].strip().replace('�','')+" ▌" for output in outputs] ) # if show_text== '': # yield last_show_text # else: yield show_text yield outputs[0].split("### Response:")[1].strip().replace('�','') else: generation_output = model.generate( input_ids=input_ids, generation_config=generation_config, return_dict_in_generate=True, output_scores=False, repetition_penalty=1.3, ) output = generation_output.sequences[0] output = tokenizer.decode(output).split("### Response:")[1].strip() print(output) yield output gr.Interface( fn=evaluate, inputs=[ gr.components.Textbox( lines=2, label="Input", placeholder="Tell me about alpacas." ), gr.components.Slider(minimum=0, maximum=1, value=0.1, label="Temperature"), gr.components.Slider(minimum=0, maximum=1, value=0.75, label="Top p"), gr.components.Slider(minimum=0, maximum=100, step=1, value=40, label="Top k"), gr.components.Slider(minimum=1, maximum=10, step=1, value=4, label="Beams Number"), gr.components.Slider( minimum=1, maximum=2000, step=1, value=256, label="Max New Tokens" ), gr.components.Slider( minimum=1, maximum=300, step=1, value=1, label="Min New Tokens" ), gr.components.Slider( minimum=0.1, maximum=10.0, step=0.1, value=2.0, label="Repetition Penalty" ), ], outputs=[ gr.inputs.Textbox( lines=25, label="Output", ) ], title="Chinese-Vicuna 中文小羊驼", description="中文小羊驼由各种高质量的开源instruction数据集，结合Alpaca-lora的代码训练而来，模型基于开源的llama7B，主要贡献是对应的lora模型。由于代码训练资源要求较小，希望为llama中文lora社区做一份贡献。", ).queue().launch(share=True)