76 lines
3.1 KiB
Python
76 lines
3.1 KiB
Python
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_overwrite_module_params_on_conversion: bool = False
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_swap_module_params_on_conversion: bool = False
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def set_overwrite_module_params_on_conversion(value: bool) -> None:
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"""
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Sets whether to assign new tensors to the parameters instead of changing the
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existing parameters in-place when converting an ``nn.Module``.
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When enabled, the following methods will assign new parameters to the module:
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#. ``module.{device}()`` (e.g. :meth:`nn.Module.cuda()`) for moving a module between devices
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#. ``module.{dtype}()`` (e.g. :meth:`nn.Module.float()`) for converting a module to a different dtype
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#. :meth:`nn.Module.to`
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#. :meth:`nn.Module.to_empty`
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Args:
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value (bool): Whether to assign new tensors or not.
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"""
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global _overwrite_module_params_on_conversion
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_overwrite_module_params_on_conversion = value
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def get_overwrite_module_params_on_conversion() -> bool:
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"""
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Returns whether to assign new tensors to the parameters instead of changing the
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existing parameters in-place when converting an :class:`torch.nn.Module`. Defaults to ``False``.
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See :func:`~torch.__future__.set_overwrite_module_params_on_conversion` for more information.
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"""
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return _overwrite_module_params_on_conversion
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def set_swap_module_params_on_conversion(value: bool) -> None:
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"""
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Sets whether to use :func:`~torch.utils.swap_tensors` instead of setting ``.data`` to
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change the existing parameters in-place when converting an ``nn.Module`` and instead
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of ``param.copy_(state_dict[key])`` when loading a state dict into an ``nn.Module``.
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.. note::
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This function takes precedence over :func:`~torch.__future__.get_overwrite_module_params_on_conversion`
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When enabled, the following methods will swap the existing parameters in-place:
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#. ``module.{device}()`` (e.g. :meth:`nn.Module.cuda()`) for moving a module between devices
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#. ``module.{dtype}()`` (e.g. :meth:`nn.Module.float()`) for converting a module to a different dtype
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#. :meth:`nn.Module.to`
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#. :meth:`nn.Module.to_empty`
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#. :meth:`nn.Module.load_state_dict`
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The semantics for :meth:`~nn.Module.load_state_dict` when this is set are as follows:
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#. For each parameter/buffer, its corresponding ``state_dict['key']`` is transformed via
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:meth:`~torch.Tensor.module_load` (i.e. ``res = param.module_load(state_dict['key'])``)
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#. If necessary, ``res`` will be wrapped in an :class:`~nn.Parameter`
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#. The parameter/buffer in the module will be swapped via :func:`~torch.utils.swap_tensors`
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with ``res``
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Args:
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value (bool): Whether to use :func:`~torch.utils.swap_tensors` or not.
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"""
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global _swap_module_params_on_conversion
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_swap_module_params_on_conversion = value
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def get_swap_module_params_on_conversion() -> bool:
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"""
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Returns whether to use :func:`~torch.utils.swap_tensors` instead of setting .data to
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change the existing parameters in-place when converting an ``nn.Module``. Defaults to ``False``.
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See :func:`~torch.__future__.set_swap_module_params_on_conversion` for more information.
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"""
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return _swap_module_params_on_conversion
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