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# GPT3
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Welcome to the GPT3 repository! This project is an attempt to recreate the architecture and approach from the original OpenAI GPT-3 paper. The repository includes scripts for training, fine-tuning, and inference of a GPT-3-like model using PyTorch and the Hugging Face Transformers library.
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## Repository Structure
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### Files
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- **[gpt3_stable_17m.py](gpt3_stable_17m.py)**: Script for training the GPT-3 model which has approximateley 17,867,008 parameters.
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- **[gpt3.py](gpt3.py)**: Script for training the GPT-3 model with cross-validation.
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- **[inference.py](inference.py)**: Script for running inference with the trained GPT-3 model.
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- **[gpt3-SFT.py](gpt3-SFT.py)**: Script for testing and fine-tuning the GPT-3 model with Supervised Fine-Tuning (SFT).
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## Key Features
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- **Custom Model Architecture**: Implements custom GPT-3 model components such as [`CustomGPT2Attention`](gpt3-17m.py#L136), [`CustomGPT2MLP`](gpt3-17m.py#L143), [`CustomGPT2Block`](gpt3-17m.py#L150), and [`CustomGPT2LMHeadModel`](gpt3-17m.py#L235).
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- **Training Loop**: Includes gradient accumulation, gradient clipping, and perplexity computation.
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- **Inference**: Supports text generation stream with top-k and top-p filtering.
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- **Logging and Checkpointing**: Uses Weights & Biases for logging and saves model checkpoints periodically.
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## Getting Started
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### Prerequisites
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- Python 3.8+ (I used 3.12)
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- PyTorch (Stable or Nightly)
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- Transformers (Hugging Face)
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- Datasets
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- Weights & Biases (wandb)
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### Installation
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1. Clone the repository:
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```sh
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git clone https://github.com/krll-corp/GPT3.git
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cd GPT3
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```
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2. Install the required packages:
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```sh
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pip install -U transformers datasetes evaluate torch wandb
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```
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### Training
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To train the model, run the following command:
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```sh
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python gpt3-17m.py
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# on MacOS or Linux it's
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python3 gpt3-17m.py
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```
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### Inference
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To generate text using the trained model, run:
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```sh
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python inference.py
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# on MacOS or Linux
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python3 gpt3-inference_v2.py
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```
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### Fine-Tuning
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If you have trained a foundation model
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```sh
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python gpt3-SFT.py
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# on MacOS or Linux
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python3 gpt3-SFT.py
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```
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## Usage
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### Training Script
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The training script initializes the model, optimizer, and learning rate scheduler. It then enters a training loop where it performs forward and backward passes, applies gradient clipping, and updates the model parameters. The aim of the script is to train a foundation model which can then be fine-tuned for chat / question answering / etc.
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### Inference Script
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The inference script loads a pre-trained model and tokenizer, moves the model to the appropriate device, and generates text based on user input using the [`generate_text_stream`](inference.py#L246) function.
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## Custom Components
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Everything was taken from official GPT-2 implementation
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### CustomGPT2Attention
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A custom implementation of the GPT-3 attention mechanism with biases included.
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### CustomGPT2MLP
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A custom implementation of the GPT-3 MLP with biases and standard GeLU activation.
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### CustomGPT2Block
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A custom implementation of the GPT-3 block with optional pre-layer normalization.
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### CustomGPT2LMHeadModel
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A custom implementation of the GPT-3 language model head with additional keyword arguments support.
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## Contributing
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Contributions are welcome! Please open an issue or submit a pull request for any improvements or bug fixes.
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## License
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- [OpenAI GPT-3 Paper](https://arxiv.org/abs/2005.14165)
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- [Hugging Face Transformers](https://github.com/huggingface/transformers)
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- [PyTorch](https://pytorch.org/)
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---
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license: mit
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datasets:
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- HuggingFaceFW/fineweb
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language:
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- en
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pipeline_tag: text-generation
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---
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# GPT3
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Welcome to the GPT3 repository! This project is an attempt to recreate the architecture and approach from the original OpenAI GPT-3 paper. The repository includes scripts for training, fine-tuning, and inference of a GPT-3-like model using PyTorch and the Hugging Face Transformers library.
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Here are located weights of dev checkpoints of my models. You can always download a folder, paste it's path inside inference.py and chat with them.
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# **You can find all code on [GitHub](https://github.com/krll-corp/GPT3)**
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## Contributing
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Contributions are welcome! I'm just a student who is interested in AI so my code may be incorrect or have logical issues. Please open an issue or submit a pull request for any improvements or bug fixes, I will be happy.
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## License
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- [OpenAI GPT-3 Paper](https://arxiv.org/abs/2005.14165)
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- [Hugging Face Transformers](https://github.com/huggingface/transformers)
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- [PyTorch](https://pytorch.org/)
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