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3771380f83
Use `TORCH_ONNX_ENABLE_DRAFT_EXPORT` to control whether draft_export should be used as a strategy in onnx export. Follow up of https://github.com/pytorch/pytorch/pull/161454 Pull Request resolved: https://github.com/pytorch/pytorch/pull/162225 Approved by: https://github.com/xadupre, https://github.com/titaiwangms
51 lines
1.3 KiB
Python
51 lines
1.3 KiB
Python
"""Internal feature flags for torch.onnx.
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NOTE: These flags are experimental only. Any flag here can be removed at any
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time without notice.
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"""
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import logging
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import os
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logger = logging.getLogger(__name__)
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def _load_boolean_flag(
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name: str,
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*,
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this_will: str,
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deprecated: bool = False,
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default: bool = False,
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) -> bool:
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"""Load a boolean flag from environment variable.
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Args:
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name: The name of the environment variable.
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this_will: A string that describes what this flag will do.
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deprecated: Whether this flag is deprecated.
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default: The default value if envvar not defined.
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"""
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undefined = os.getenv(name) is None
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state = os.getenv(name) == "1"
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if state:
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if deprecated:
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logger.error(
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"Experimental flag %s is deprecated. Please remove it from your environment.",
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name,
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)
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else:
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logger.warning(
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"Experimental flag %s is enabled. This will %s.", name, this_will
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)
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if undefined:
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state = default
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return state
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ENABLE_DRAFT_EXPORT: bool = _load_boolean_flag(
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"TORCH_ONNX_ENABLE_DRAFT_EXPORT",
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this_will="enable torch.export.draft_export as a strategy for capturing models",
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default=False,
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)
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