LSX-UniWue/LLaMmlein_1B_chat_selected

LLäMmlein 1B Chat

This is a chat adapter for the German Tinyllama 1B language model. Find more details on our page and our preprint!

Run it

import torch
from peft import PeftConfig, PeftModel
from transformers import AutoModelForCausalLM, AutoTokenizer

torch.manual_seed(42)

# script config
base_model_name = "LSX-UniWue/LLaMmlein_1B"
chat_adapter_name = "LSX-UniWue/LLaMmlein_1B_chat_selected"
device = "mps"  # or cuda

# chat history
messages = [
    {
        "role": "user",
        "content": """Na wie geht's?""",
    },
]

# load model
config = PeftConfig.from_pretrained(chat_adapter_name)
base_model = model = AutoModelForCausalLM.from_pretrained(
    base_model_name,
    attn_implementation="flash_attention_2" if device == "cuda" else None,
    torch_dtype=torch.bfloat16,
    device_map=device,
)
base_model.resize_token_embeddings(32064)
model = PeftModel.from_pretrained(base_model, chat_adapter_name)
tokenizer = AutoTokenizer.from_pretrained(chat_adapter_name)

# encode message in "ChatML" format
chat = tokenizer.apply_chat_template(
    messages,
    return_tensors="pt",
    add_generation_prompt=True,
).to(device)

# generate response
print(
    tokenizer.decode(
        model.generate(
            chat,
            max_new_tokens=300,
            pad_token_id=tokenizer.pad_token_id,
            eos_token_id=tokenizer.eos_token_id,
        )[0],
        skip_special_tokens=False,
    )
)