add max_length and max_prompt_length

If you don't have a set, you can only use the default values

orpo_training.py

@@ -45,6 +45,11 @@ class ScriptArguments:
     The name of the Casual LM model we wish to fine with DPO
     """
     # Model arguments
+
+    max_length: Optional[int] = field(default=512,
+                                      metadata={"help": "Maximum total input sequence length after tokenization."})
+    max_prompt_length: Optional[int] = field(default=128, metadata={"help": "Maximum length of prompt sequences."})
+
     model_type: str = field(
         default=None,
         metadata={"help": "Model type selected in the list: " + ", ".join(MODEL_CLASSES.keys())}
@@ -415,6 +420,8 @@ def main():
         model.config.use_cache = True
 
     training_args = ORPOConfig(
+        max_length=args.max_length,
+        max_prompt_length=args.max_prompt_length,
         per_device_train_batch_size=args.per_device_train_batch_size,
         per_device_eval_batch_size=args.per_device_eval_batch_size,
         max_steps=args.max_steps,