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Fix gather for TPU #13813

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merged 1 commit into from Sep 30, 2021
Merged

Fix gather for TPU #13813

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2 changes: 2 additions & 0 deletions src/transformers/trainer_pt_utils.py
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Expand Up @@ -152,6 +152,8 @@ def nested_xla_mesh_reduce(tensors, name):

if isinstance(tensors, (list, tuple)):
return type(tensors)(nested_xla_mesh_reduce(t, f"{name}_{i}") for i, t in enumerate(tensors))
if tensors.ndim == 0:
tensors = tensors[None]
return xm.mesh_reduce(name, tensors, torch.cat)
else:
raise ImportError("Torch xla must be installed to use `nested_xla_mesh_reduce`")
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