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Import expand_device_map instead of redefining it #41608

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Merged
merged 1 commit into from
Oct 15, 2025
Merged

Import expand_device_map instead of redefining it #41608

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13 changes: 1 addition & 12 deletions src/transformers/modeling_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@
accelerate_disk_offload,
accelerate_dispatch,
check_and_set_device_map,
expand_device_map,
find_tied_parameters,
init_empty_weights,
)
Expand Down Expand Up @@ -5298,18 +5299,6 @@ def unwrap_model(model: nn.Module, recursive: bool = False) -> nn.Module:
return model


def expand_device_map(device_map, param_names):
"""
Expand a device map to return the correspondence parameter name to device.
"""
new_device_map = {}
for module, device in device_map.items():
new_device_map.update(
{p: device for p in param_names if p == module or p.startswith(f"{module}.") or module == ""}
)
return new_device_map


def is_accelerator_device(device: Union[str, int, torch.device]) -> bool:
"""Check if the device is an accelerator. We need to function, as device_map can be "disk" as well, which is not
a proper `torch.device`.
Expand Down