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make torch use flash-attn #2189

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make torch use flash-attn #2189

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2e92929
make torch use flash-attn
pass-lin Apr 2, 2025
bd287b5
make torch use flash-attn
pass-lin Apr 2, 2025
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21 changes: 17 additions & 4 deletions keras_hub/src/utils/keras_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -56,10 +56,9 @@ def standardize_data_format(data_format):


def has_flash_attention_support():
if (
hasattr(keras.config, "is_flash_attention_enabled")
and keras.config.backend() == "jax"
):
if not hasattr(keras.config, "is_flash_attention_enabled"):
return False
if keras.config.backend() == "jax":
try:
from jax.nn import dot_product_attention as dot_product_attention
except ImportError:
Expand All @@ -70,6 +69,20 @@ def has_flash_attention_support():
)
return False
return True
elif keras.config.backend() == "torch":
try:
from torch.backends.cuda import SDPAParams # noqa: F401
from torch.backends.cuda import (
can_use_flash_attention, # noqa: F401
)
except ImportError:
logging.warning(
"Flash attention is not supported in your current PyTorch "
"version. Please update it by following the official guide:"
"https://pytorch.org/get-started/locally/"
)
return False
return True
else:
return False

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