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# Madlad Optimized Inference Script
import torch
import onnxruntime as ort
from transformers import T5Tokenizer
import numpy as np

class MadladOptimizedInference:
    def __init__(self, model_dir):
        self.tokenizer = T5Tokenizer.from_pretrained(model_dir)
        
        # Load model components
        self.encoder_session = ort.InferenceSession(f"{model_dir}/madlad_encoder.onnx")
        self.decoder_session = ort.InferenceSession(f"{model_dir}/madlad_decoder.onnx")
        
        # If embed/lm_head separated successfully
        # self.embed_session = ort.InferenceSession(f"{model_dir}/madlad_embed_and_lm_head.onnx")
    
    def translate(self, text, max_length=128):
        # Tokenize input
        inputs = self.tokenizer(text, return_tensors="np")
        
        # Run encoder
        encoder_outputs = self.encoder_session.run(None, {
            "input_ids": inputs["input_ids"],
            "attention_mask": inputs["attention_mask"]
        })
        
        # Simplified generation loop (would need KV-cache for full optimization)
        # This is a basic version - full implementation would follow NLLB pattern
        
        generated_ids = []
        # Implementation details would go here...
        
        return self.tokenizer.decode(generated_ids, skip_special_tokens=True)

# Usage example:
# inference = MadladOptimizedInference("madlad_optimized")
# result = inference.translate("<2pt> I love pizza!")