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# Config options to enable/disable C++ kernel for nn.functional.MHA
# and nn.TransformerEncoder
import torch
_is_fastpath_enabled: bool = True
def get_fastpath_enabled() -> bool:
"""Returns whether fast path for TransformerEncoder and MultiHeadAttention
is enabled, or ``True`` if jit is scripting.
..note:
The fastpath might not be run even if ``get_fastpath_enabled`` returns
``True`` unless all conditions on inputs are met.
"""
if not torch.jit.is_scripting():
return _is_fastpath_enabled
return True
def set_fastpath_enabled(value: bool) -> None:
"""Sets whether fast path is enabled"""
global _is_fastpath_enabled
_is_fastpath_enabled = value
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