Repository: huggingface/transformers
Pull request: Enable Liger Kernel when doing hyperparameter search.

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Fixes #44315. Check `args.use_liger_kernel` after it is updated by `_hp_search_setup(trial)`.


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@SunMarc 

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Changed files:
filename: src/transformers/trainer.py
patch: @@ -436,9 +436,6 @@ def __init__(
                 "https://huggingface.co/docs/transformers/model_doc/auto"
             )
 
-        if self.args.use_liger_kernel:
-            apply_liger_kernel(model, self.args.liger_kernel_config)
-
         validate_quantization_for_training(model)
 
         # ---- 4. Distributed strategy ------------------------------------------------
@@ -1366,6 +1363,9 @@ def train(
                 self._move_model_to_device(self.model, args.device)
             self.model_wrapped = self.model
 
+        if self.args.use_liger_kernel:
+            apply_liger_kernel(self.model, self.args.liger_kernel_config)
+
         # When fp16/bf16 full eval is enabled, __init__ skips device placement so that
         # evaluation_loop can cast dtype and move in one step. Move the model now for training.
         if (args.fp16_full_eval or args.bf16_full_eval) and not self.is_model_parallel and self.model_init is None: