https://github.com/moskomule/simple_transformers

Simple transformer implementations that I can understand
https://github.com/moskomule/simple_transformers

transformers

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Simple transformer implementations that I can understand

• Host: GitHub
• URL: https://github.com/moskomule/simple_transformers
• Owner: moskomule
• Created: 2021-02-17T13:35:25.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2021-12-28T05:15:48.000Z (almost 3 years ago)
• Last Synced: 2024-07-04T00:59:57.696Z (4 months ago)
• Topics: transformers
• Language: Python
• Homepage:
• Size: 119 KB
• Stars: 20
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Simple Transformers

Simple transformer implementations that I can understand.

## Requirements

```commandline

conda create -n transformer python=3.9

conda activate transformer

conda install -c pytorch -c conda-forge pytorch torchvision cudatoolkit=11.1

pip install -U homura-core chika rich

# for NLP also install

pip install -U datasets tokenizers

# To use checkpointing

pip install -U fairscale

# To accelerate (probably only slightly), 

pip install -U opt_einsum

```

## Examples

### Language Modeling

#### GPT

Train GPT-like models on wikitext or GigaText. Currently, Transformer blocks of improved pre LN, pre LN, and post LN are

available for comparison.

```commandline

python gpt.py [--model.block {ipre_ln, pre_ln, post_ln}] [--amp]

```

#### Bert

Work in progress

### Image Recognition

Train ImageNet classification models.

Currently, ViT, and CaiT are implemented.

```commandline

# single process training

python vit.py [--amp] [--model.ema]

# for multi-process training,

python -m torch.distributed.launch --nproc_per_node=2 vit.py ...

```

## Acknowledgement

For this project, I learned a lot from Andrej's [minGPT](https://github.com/karpathy/mingpt),

Ross's [timm](https://github.com/rwightman/pytorch-image-models), and

FAIR's [ClassyVision](https://github.com/facebookresearch/ClassyVision).