PEFT How to use Gaoussin/madlad-bm-fr with PEFT:
from peft import PeftModel
from transformers import AutoModelForSeq2SeqLM
base_model = AutoModelForSeq2SeqLM.from_pretrained("google/madlad400-3b-mt")
model = PeftModel.from_pretrained(base_model, "Gaoussin/madlad-bm-fr")