---
license: bigscience-openrail-m
pipeline_tag: text-generation
tags:
- code
- automated program repair
---
# StarCoder-15B_for_NTR

We fine-tuned [StarCoder-15B](https://huggingface.co/bigcode/starcoder) on [Transfer_dataset](https://drive.google.com/drive/folders/1Z-2xcLSmh643BfX_j0yQW2GmdPoru6j3?usp=drive_link) under the NMT workflow [[Jiang et al.](https://github.com/lin-tan/clm), [Huang et al.](https://github.com/LLMC-APR/STUDY)] for APR research.

## Model Use

To use this model, please make sure to install transformers, peft, bitsandbytes, and accelerate.

```bash
pip install transformers
pip install peft
pip install bitsandbytes
pip install accelerate
```

Then, please run the following script to merge the adapter into the CodeLlama.

```bash
bash merge.sh
```

Finally, you can load the model to generate patches for buggy code.

```python
from transformers import AutoTokenizer, AutoModelForCausalLM
from peft import LoraConfig, get_peft_model, prepare_model_for_int8_training
import torch


# load model and tokenizer

tokenizer = AutoTokenizer.from_pretrained('bigcode/starcoderbase', use_auth_token=True)

model = AutoModelForCausalLM.from_pretrained(
        "StarCoder-15B_for_NMT/Epoch_1/-merged",
        use_auth_token=True,
        use_cache=True,
        load_in_8bit=True,
        device_map="auto"
    )
    
model = prepare_model_for_int8_training(model)

lora_config = LoraConfig(
    r=16,
    lora_alpha=32,
    lora_dropout=0.05,
    bias="none",
    task_type="CAUSAL_LM",
    target_modules = ["c_proj", "c_attn", "q_attn"]
)

model = get_peft_model(model, lora_config)


# a bug-fix pairs

buggy_code = """
  public MultiplePiePlot(CategoryDataset dataset){
    super();
// bug_start
    this.dataset=dataset;
// bug_end
    PiePlot piePlot=new PiePlot(null);
    this.pieChart=new JFreeChart(piePlot);
    this.pieChart.removeLegend();
    this.dataExtractOrder=TableOrder.BY_COLUMN;
    this.pieChart.setBackgroundPaint(null);
    TextTitle seriesTitle=new TextTitle("Series Title",new Font("SansSerif",Font.BOLD,12));
    seriesTitle.setPosition(RectangleEdge.BOTTOM);
    this.pieChart.setTitle(seriesTitle);
    this.aggregatedItemsKey="Other";
    this.aggregatedItemsPaint=Color.lightGray;
    this.sectionPaints=new HashMap();
  }
"""

fixed_code = """
// fix_start
     setDataset(dataset);
// fix_end
"""

# model inference

input_text = '<commit_before>\n' + buggy_code + '\n<commit_after>\n'
input_ids = tokenizer(input_text, return_tensors="pt").input_ids.to(0)

eos_id = tokenizer.convert_tokens_to_ids(tokenizer.eos_token)
generated_ids = model.generate(
    input_ids=input_ids,
    max_new_tokens=256,
    num_beams=10,
    num_return_sequences=10,
    early_stopping=True,
    pad_token_id=eos_id,
    eos_token_id=eos_id
)

for generated_id in generated_ids:
    generated_text = tokenizer.decode(generated_id, skip_special_tokens=False)
    patch = generated_text.split('\n<commit_after>\n')[1]
    patch = patch.replace('<|endoftext|>','')
    print(patch)


```

## Model Details
The model is licensed under the BigCode OpenRAIL-M v1 license agreement. You can find the full agreement [here](https://huggingface.co/spaces/bigcode/bigcode-model-license-agreement).