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from transformers import (
AutoModelForCausalLM,
AutoTokenizer,
)
from peft import PeftModel, PeftConfig
import torch
orig_checkpoint = 'google/gemma-2b'
checkpoint = '.'
HF_TOKEN = ''
PROMPT = 'Salut, ca sa imi schimb buletinul pot sa'
seq_len = 256
# load original model first
tokenizer = AutoTokenizer.from_pretrained(orig_checkpoint, token=HF_TOKEN)
model = AutoModelForCausalLM.from_pretrained(orig_checkpoint, token=HF_TOKEN)
# then merge trained QLoRA weights
model = PeftModel.from_pretrained(model, checkpoint)
model.merge_and_unload()
model = model.cuda()
# generate normally
inputs = tokenizer.encode(PROMPT, return_tensors="pt").cuda()
outputs = model.generate(inputs, max_new_tokens=seq_len)
print(tokenizer.decode(outputs[0])) |