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handle dtype xformers attention #1196

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Nov 8, 2022
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handle dtype xformers attention #1196

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2 changes: 2 additions & 0 deletions src/diffusers/models/attention.py
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Original file line number Diff line number Diff line change
Expand Up @@ -492,6 +492,8 @@ def forward(self, hidden_states, context=None, mask=None):
# attention, what we cannot get enough of
if self._use_memory_efficient_attention_xformers:
hidden_states = self._memory_efficient_attention_xformers(query, key, value)
# Some versions of xformers return output in fp32, cast it back to the dtype of the input
hidden_states = hidden_states.to(query.dtype)
else:
if self._slice_size is None or query.shape[0] // self._slice_size == 1:
hidden_states = self._attention(query, key, value)
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