44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
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from typing import Any
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import torch
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__all__ = ["autocast"]
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class autocast(torch.amp.autocast_mode.autocast):
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r"""
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See :class:`torch.autocast`.
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``torch.cpu.amp.autocast(args...)`` is equivalent to ``torch.autocast("cpu", args...)``
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"""
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def __init__(
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self,
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enabled: bool = True,
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dtype: torch.dtype = torch.bfloat16,
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cache_enabled: bool = True,
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):
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if torch._jit_internal.is_scripting():
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self._enabled = enabled
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self.device = "cpu"
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self.fast_dtype = dtype
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return
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super().__init__(
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"cpu", enabled=enabled, dtype=dtype, cache_enabled=cache_enabled
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)
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def __enter__(self):
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if torch._jit_internal.is_scripting():
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return self
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return super().__enter__()
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# TODO: discuss a unified TorchScript-friendly API for autocast
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def __exit__(self, exc_type: Any, exc_val: Any, exc_tb: Any): # type: ignore[override]
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if torch._jit_internal.is_scripting():
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return
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return super().__exit__(exc_type, exc_val, exc_tb)
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def __call__(self, func):
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if torch._jit_internal.is_scripting():
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return func
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return super().__call__(func)
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