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gguf-py : order safetensors tensors by name

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Applies to both local and remote safetensors custom parsing.
This matches the behavior of the official safetensors implementation.

* convert : rename from_safetensors_meta to from_local_tensor

For consistency with from_remote_tensor
This commit is contained in:
Francis Couture-Harpin
2025-09-09 13:31:06 -04:00
parent ca8f736fe4
commit 0edc189842
2 changed files with 9 additions and 4 deletions
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4
convert_hf_to_gguf.py
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@@ -206,7 +206,7 @@ class ModelBase:
if is_safetensors:
data: gguf.utility.LocalTensor = model_part[name]
if self.lazy:
data_gen = lambda data=data: LazyTorchTensor.from_safetensors_meta(data) # noqa: E731
data_gen = lambda data=data: LazyTorchTensor.from_local_tensor(data) # noqa: E731
else:
dtype = LazyTorchTensor._dtype_str_map[data.dtype]
data_gen = lambda data=data: torch.from_numpy(data.mmap_bytes()).view(dtype).reshape(data.shape) # noqa: E731
@@ -8860,7 +8860,7 @@ class LazyTorchTensor(gguf.LazyBase):
return cast(torch.Tensor, lazy)
@classmethod
def from_safetensors_meta(cls, t: gguf.utility.LocalTensor) -> Tensor:
def from_local_tensor(cls, t: gguf.utility.LocalTensor) -> Tensor:
def load_tensor(tensor: gguf.utility.LocalTensor) -> Tensor:
dtype = cls._dtype_str_map[tensor.dtype]
return torch.from_numpy(tensor.mmap_bytes()).view(dtype).reshape(tensor.shape)

9
gguf-py/gguf/utility.py
View File

@@ -179,6 +179,10 @@ class SafetensorRemote:
except KeyError as e:
raise ValueError(f"Missing key in metadata for tensor '{name}': {e}, meta = {meta}")
# order by name (same as default safetensors behavior)
# ref: https://github.com/huggingface/safetensors/blob/0816a1ae1d6b731cefd67f061d80d1cadd0dd7bb/bindings/python/src/lib.rs#L606
res = dict(sorted(res.items(), key=lambda t: t[0]))
return res
@classmethod
@@ -332,8 +336,9 @@ class SafetensorsLocal:
),
)
# order by offset
self.tensors = dict(sorted(tensors.items(), key=lambda t: t[1].data_range.offset))
# order by name (same as default safetensors behavior)
# ref: https://github.com/huggingface/safetensors/blob/0816a1ae1d6b731cefd67f061d80d1cadd0dd7bb/bindings/python/src/lib.rs#L606
self.tensors = dict(sorted(tensors.items(), key=lambda t: t[0]))
def __enter__(self, *args, **kwargs):
del args, kwargs # unused