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remove dead gemma4 branch in _set_attention_config

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Wing Lian
2026-04-23 22:22:56 +00:00
parent 434a484fe9
commit aeca18a8b0
1 changed files with 3 additions and 10 deletions
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13
src/axolotl/loaders/model.py
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@@ -633,20 +633,13 @@ class ModelLoader:
# replaces F.scaled_dot_product_attention post-load, so load under sdpa.
# Every other canonical name (and hub-kernel paths) is passed through
# verbatim — xformers/sage/flash_attention_* are registered under their
# own names in ALL_ATTENTION_FUNCTIONS before model load.
# own names in ALL_ATTENTION_FUNCTIONS before model load. gemma4_hybrid
# is already pinned to flash_attention_2 by normalize_attn_implementation.
_LOAD_TIME_OVERRIDE = {"s2": "flash_attention_2", "fp8": "sdpa"}
if self.cfg.gemma4_hybrid_attn_impl:
# Load with flash_attention_2 for sliding-window layers; global
# layers are swapped to sdpa post-load.
hf_impl = "flash_attention_2"
elif self.cfg.attn_implementation:
if self.cfg.attn_implementation:
hf_impl = _LOAD_TIME_OVERRIDE.get(
self.cfg.attn_implementation, self.cfg.attn_implementation
)
else:
hf_impl = None
if hf_impl is not None:
self.model_kwargs["attn_implementation"] = hf_impl
self.model_config._attn_implementation = hf_impl