Instructions to use trl-internal-testing/dummy-GPT2-correct-vocab with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use trl-internal-testing/dummy-GPT2-correct-vocab with Transformers:

# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("text-generation", model="trl-internal-testing/dummy-GPT2-correct-vocab")
messages = [
    {"role": "user", "content": "Who are you?"},
]
pipe(messages)

# Load model directly
from transformers import AutoTokenizer, AutoModelForCausalLM

tokenizer = AutoTokenizer.from_pretrained("trl-internal-testing/dummy-GPT2-correct-vocab")
model = AutoModelForCausalLM.from_pretrained("trl-internal-testing/dummy-GPT2-correct-vocab")
messages = [
    {"role": "user", "content": "Who are you?"},
]
inputs = tokenizer.apply_chat_template(
	messages,
	add_generation_prompt=True,
	tokenize=True,
	return_dict=True,
	return_tensors="pt",
).to(model.device)

outputs = model.generate(**inputs, max_new_tokens=40)
print(tokenizer.decode(outputs[0][inputs["input_ids"].shape[-1]:]))

Notebooks
Google Colab
Kaggle
Local Apps

vLLM

How to use trl-internal-testing/dummy-GPT2-correct-vocab with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "trl-internal-testing/dummy-GPT2-correct-vocab"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "trl-internal-testing/dummy-GPT2-correct-vocab",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/trl-internal-testing/dummy-GPT2-correct-vocab

SGLang

How to use trl-internal-testing/dummy-GPT2-correct-vocab with SGLang:

Install from pip and serve model

# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
    --model-path "trl-internal-testing/dummy-GPT2-correct-vocab" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "trl-internal-testing/dummy-GPT2-correct-vocab",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker images

docker run --gpus all \
    --shm-size 32g \
    -p 30000:30000 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=<secret>" \
    --ipc=host \
    lmsysorg/sglang:latest \
    python3 -m sglang.launch_server \
        --model-path "trl-internal-testing/dummy-GPT2-correct-vocab" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "trl-internal-testing/dummy-GPT2-correct-vocab",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use trl-internal-testing/dummy-GPT2-correct-vocab with Docker Model Runner:
```
docker model run hf.co/trl-internal-testing/dummy-GPT2-correct-vocab
```

Dummy GPT2 for TRL testing

from transformers import AutoTokenizer, GPT2Config, GPT2LMHeadModel

config = GPT2Config(n_positions=512, n_embd=32, n_layer=5, n_head=4, n_inner=37, pad_token_id=1023, is_decoder=True)
model = GPT2LMHeadModel(config)
tokenizer = AutoTokenizer.from_pretrained("openai-community/gpt2")

model_id = "trl-internal-testing/dummy-GPT2-correct-vocab"
model.push_to_hub(model_id)
tokenizer.chat_template = "{% for message in messages %}{% if message['role'] == 'user' %}{{ ' ' }}{% endif %}{{ message['content'] }}{% if not loop.last %}{{ '  ' }}{% endif %}{% endfor %}{{ eos_token }}"
tokenizer.push_to_hub(model_id)
config.push_to_hub(model_id)

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Safetensors

Model size

1.66M params

Tensor type

F32

trl-internal-testing
/

dummy-GPT2-correct-vocab

Dummy GPT2 for TRL testing

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