Repository: huggingface/transformers
Pull request: fix break for ckpt without _tp_plan

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Models without a tp_plan attribute or with _tp_plan set to None would cause a TypeError during caching_allocator_warmup, which breaks my ckpt in hf 4.52.x or later.


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Changed files:
filename: src/transformers/modeling_utils.py
patch: @@ -5991,8 +5991,9 @@ def caching_allocator_warmup(model: PreTrainedModel, expanded_device_map: dict,
     if not accelerator_device_map:
         return
 
+    tp_plan = getattr(model, "_tp_plan", []) or []
     tp_plan_regex = (
-        re.compile("|".join([re.escape(plan) for plan in model._tp_plan]))
+        re.compile("|".join([re.escape(plan) for plan in tp_plan]))
         if _torch_distributed_available and torch.distributed.is_initialized()
         else None
     )