codefuse-ai / CodeFuse-CodeLlama-34B-4bits

Model Card for CodeFuse-CodeLlama-34B-4bits

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Model Description

CodeFuse-CodeLlama-34B-4bits is the 4-bit quantized version of CodeFuse-CodeLlama-34B, which is a 34B Code-LLM fine-tuned over multiple code tasks（600k instrunctions/answers）on the base model CodeLlama-34b-Python.

After undergoing 4-bit quantization, the CodeFuse-CodeLlama-34B-4bits model can be loaded on either a single A10 (24GB VRAM) or a RTX 4090 (24GB VRAM). Moreover, the quantized model still achives an impressive accuracy of 73.8% on the Humaneval pass@1 metric.

News and Updates

🔥🔥🔥 2023-09-26 We are pleased to announce the release of the 4-bit quantized version of CodeFuse-CodeLlama-34B. Despite the quantization process, the model still achieves a remarkable 73.8% accuracy (greedy decoding) on the HumanEval pass@1 metric.

🔥🔥🔥 2023-09-11 CodeFuse-CodeLlama34B has achieved 74.4% of pass@1 (greedy decoding) on HumanEval, which is SOTA results for openspurced LLMs at present.

Code Community

Homepage : 🏡 https://github.com/codefuse-ai ( Please give us your support with a Star🌟 + Fork🚀 + Watch👀 )

• If you wish to fine-tune the model yourself, you can visit ✨ MFTCoder ✨✨

• If you wish to deploy the model yourself, you can visit ✨ FasterTransformer4CodeFuse ✨✨

• If you wish to see a demo of the model, you can visit ✨ CodeFuse Demo ✨✨

Performance

GPU Memory Usage

We measured the GPU memory usage after loading the model, as well as the memory usage when encoding 2048/1024 tokens and generating 1024/2048 tokens. The results are presented in the table below.

Requirements

• python>=3.8
• pytorch>=2.0.0
• transformers==4.32.0
• auto_gptq==0.4.2
• Sentencepiece
• CUDA 11.4

Inference String Format

The inference string is a concatenated string formed by combining conversation data (human and bot contents) in the training data format. It is used as input during the inference process. Here is an example format of the concatenated string:

"""
<|role_start|>human<|role_end|>Human 1st round input
<|role_start|>bot<|role_end|>Bot 1st round output</s>
<|role_start|>human<|role_end|>Human 2nd round input
<|role_start|>bot<|role_end|>Bot 2nd round output</s>
...
...
...
<|role_start|>human<|role_end|>Human nth round input
<|role_start|>bot<|role_end|>{Bot output to be genreated}</s>
"""

When applying inference, you always make your input string end with "<|role_start|>bot<|role_end|>" to ask the model generating answers.

Quickstart

 git clone https://huggingface.co/codefuse-ai/CodeFuse-CodeLlama-34B-4bits.git	

pip install -r requirements.txt

import os
import torch
import time
from transformers import AutoTokenizer
from auto_gptq import AutoGPTQForCausalLM, BaseQuantizeConfig

os.environ["TOKENIZERS_PARALLELISM"] = "false"

def load_model_tokenizer(model_name_or_local_path):
    """
    Load model and tokenizer based on the given model name or local path of the downloaded model.
    """
    tokenizer = AutoTokenizer.from_pretrained(model_name_or_local_path, 
                                              trust_remote_code=True, 
                                              use_fast=False,
                                              legacy=False)
    tokenizer.padding_side = "left"

    model = AutoGPTQForCausalLM.from_quantized(model_name_or_local_path, 
                                                inject_fused_attention=False,
                                                inject_fused_mlp=False,
                                                use_cuda_fp16=True,
                                                disable_exllama=False,
                                                device_map='auto'   # Support multi-gpus
                                              )
    return model, tokenizer


def inference(model, tokenizer, prompt):
    """
    Uset the given model and tokenizer to generate an answer for the specified prompt.
    """
    st = time.time()
    prompt = prompt if prompt.endswith('\n') else f'{prompt}\n'
    inputs =  f"<|role_start|>human<|role_end|>{prompt}<|role_start|>bot<|role_end|>"

    input_ids = tokenizer.encode(inputs, 
                                  return_tensors="pt", 
                                  padding=True, 
                                  add_special_tokens=False).to("cuda")
    with torch.no_grad():
        generated_ids = model.generate(
            input_ids=input_ids,
            top_p=0.95,
            temperature=0.1,
            do_sample=True,
            max_new_tokens=512,
            eos_token_id=tokenizer.eos_token_id,
            pad_token_id=tokenizer.pad_token_id              
        )
    print(f'generated tokens num is {len(generated_ids[0][input_ids.size(1):])}')
    outputs = tokenizer.batch_decode(generated_ids, skip_special_tokens=True) 
    print(f'generate text is {outputs[0][len(inputs): ]}')
    latency = time.time() - st
    print('latency is {} seconds'.format(latency))

    
if __name__ == "__main__":
    model_name_or_local_path = '<Mole name (i.e. codefuse-ai/CodeFuse-CodeLlama-34B-4bits) or local path of the downloaded model>'
    prompt = 'Please write a QuickSort program in Python'

    model, tokenizer = load_model_tokenizer(model_name_or_local_path)
    inference(model, tokenizer, prompt)

The current inference example code is based on AutoGPTQ . If you want to achieve higher inference speed, it is recommended to combine it with TensorRT-LLM (Early Access) .

Consistency Check

Here, SHA256 values are provided for the model-related files for consistency check during the download.

Citation

If you find our work useful or helpful for your R&D works, please feel free to cite our paper as below.

@article{mftcoder2023,
      title={MFTCoder: Boosting Code LLMs with Multitask Fine-Tuning}, 
      author={Bingchang Liu and Chaoyu Chen and Cong Liao and Zi Gong and Huan Wang and Zhichao Lei and Ming Liang and Dajun Chen and Min Shen and Hailian Zhou and Hang Yu and Jianguo Li},
      year={2023},
      journal={arXiv preprint arXiv},
      archivePrefix={arXiv},
      eprint={2311.02303}
}

模型简介

CodeFuse-CodeLlama-34B-4bits是CodeFuse-CodeLlama-34B模型的4bits量化版本，后者是通过QLoRA对基座模型CodeLlama-34b-Python进行多代码任务微调而得到的代码大模型，模型输入长度为4K。

经4bits量化后，CodeFuse-CodeLlama-34B-4bits可用单张A10 (24GB显存)或者RTX 4090 (24GB显存)加载，同时，量化后的模型在Humaneval pass@1指标上仍取得了73.8%的表现。

新闻

🔥🔥🔥 2023-09-26 CodeFuse-CodeLlama-34B 4bits量化版本发布，量化后模型在HumanEval pass@1指标为73.8% (贪婪解码)。

🔥🔥🔥 2023-09-11 CodeFuse-CodeLlama-34B发布，HumanEval pass@1指标达到74.4% (贪婪解码), 为当前开源SOTA。

代码社区

大本营 ： 🏡 https://github.com/codefuse-ai （ 请支持我们的项目Star🌟 + Fork🚀 + Watch👀 ）

• 如果您想自己微调该模型，可以访问 ✨ MFTCoder ✨✨

• 如果您想自己部署该模型，可以访问 ✨ FasterTransformer4CodeFuse ✨✨

• 如果您想观看该模型示例，可以访问 ✨ CodeFuse Demo ✨✨

评测表现(代码)

显存使用

我们测量了模型加载后占用的显存占用情况，以及输入2048/1024 tokens并输出1024/2048 tokens时的显存使用情况，如下表所示

依赖要求

• python>=3.8
• pytorch>=2.0.0
• transformers==4.32.0
• auto_gptq==0.4.2
• Sentencepiece
• CUDA 11.4

推理数据格式

推理数据为模型在训练数据格式下拼接的字符串形式，它也是推理时输入prompt拼接的方式：

"""
<|role_start|>human<|role_end|>Human 1st round input
<|role_start|>bot<|role_end|>Bot 1st round output</s>
<|role_start|>human<|role_end|>Human 2nd round input
<|role_start|>bot<|role_end|>Bot 2nd round output</s>
...
...
...
<|end|><|role_start|>human<|role_end|>Human nth round input
<|end|><|role_start|>bot<|role_end|>{Bot output to be genreated}</s>
"""

推理时，请确保拼接的prompt字符串以"<|role_start|>bot<|role_end|>"结尾，引导模型生成回答。

快速使用

 git clone https://huggingface.co/codefuse-ai/CodeFuse-CodeLlama-34B-4bits.git	

pip install -r requirements.txt

import os
import torch
import time
from transformers import AutoTokenizer
from auto_gptq import AutoGPTQForCausalLM, BaseQuantizeConfig

os.environ["TOKENIZERS_PARALLELISM"] = "false"

def load_model_tokenizer(model_name_or_local_path):
    """
    Load model and tokenizer based on the given model name or local path of downloaded model.
    """
    tokenizer = AutoTokenizer.from_pretrained(model_name_or_local_path, 
                                              trust_remote_code=True, 
                                              use_fast=False,
                                              legacy=False)
    tokenizer.padding_side = "left"

    model = AutoGPTQForCausalLM.from_quantized(model_name_or_local_path, 
                                                inject_fused_attention=False,
                                                inject_fused_mlp=False,
                                                use_cuda_fp16=True,
                                                disable_exllama=False,
                                                device_map='auto'   # Support multi-gpus
                                              )
    return model, tokenizer


def inference(model, tokenizer, prompt):
    """
    Uset the given model and tokenizer to generate an answer for the speicifed prompt.
    """
    st = time.time()
    prompt = prompt if prompt.endswith('\n') else f'{prompt}\n'
    inputs =  f"<|role_start|>human<|role_end|>{prompt}<|role_start|>bot<|role_end|>"

    input_ids = tokenizer.encode(inputs, 
                                  return_tensors="pt", 
                                  padding=True, 
                                  add_special_tokens=False).to("cuda")
    with torch.no_grad():
        generated_ids = model.generate(
            input_ids=input_ids,
            top_p=0.95,
            temperature=0.1,
            do_sample=True,
            max_new_tokens=512,
            eos_token_id=tokenizer.eos_token_id, 
            pad_token_id=tokenizer.pad_token_id             
        )
    print(f'generated tokens num is {len(generated_ids[0][input_ids.size(1):])}')
    outputs = tokenizer.batch_decode(generated_ids, skip_special_tokens=True) 
    print(f'generate text is {outputs[0][len(inputs): ]}')
    latency = time.time() - st
    print('latency is {} seconds'.format(latency))

    
if __name__ == "__main__":
    model_name_or_local_path = '<模型名字 (即codefuse-ai/CodeFuse-CodeLlama-34B-4bits)或者提前下载到本地的模型路径>'
    prompt = '请用Python实现一个快速排序算法'

    model, tokenizer = load_model_tokenizer(model_name_or_local_path)
    inference(model, tokenizer, prompt)

目前的推理示例代码是基于 AutoGPTQ 的，如果你想获取更高的推理速度，建议结合使用 TensorRT-LLM (Early Access) 。

一致性校验

这里提供了模型相关文件的SHA256值，用于下载一致性校验。