PEFT How to use chengyineng/gpt2_random_test with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("gpt2")
model = PeftModel.from_pretrained(base_model, "chengyineng/gpt2_random_test") 
