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[diffusion] fix: restore cache-dit support for LTX2 (#23235)

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Co-authored-by: gengjinsong <gengjinsong@huawei.com>
This commit is contained in:
gjsheu
2026-04-25 18:10:43 +08:00
committed by GitHub
co-authored by gengjinsong
parent 50ce2708ca
commit e708ea6d94
1 changed files with 7 additions and 6 deletions
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python/sglang/multimodal_gen/runtime/models/dits/ltx_2.py
+7 -6
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@@ -1775,12 +1775,13 @@ class LTX2VideoTransformer3DModel(CachableDiT, OffloadableDiTMixin):
skip_video_self_attn_blocks = set(skip_video_self_attn_blocks or ())
skip_audio_self_attn_blocks = set(skip_audio_self_attn_blocks or ())
for block in self.transformer_blocks:
block_idx = getattr(block, "idx", -1)
video_self_attn_perturbation_mask = None
audio_self_attn_perturbation_mask = None
a2v_cross_attn_perturbation_mask = None
v2a_cross_attn_perturbation_mask = None
skip_video_self_attn = block.idx in skip_video_self_attn_blocks
skip_audio_self_attn = block.idx in skip_audio_self_attn_blocks
skip_video_self_attn = block_idx in skip_video_self_attn_blocks
skip_audio_self_attn = block_idx in skip_audio_self_attn_blocks
skip_a2v_cross_attn = disable_a2v_cross_attn
skip_v2a_cross_attn = disable_v2a_cross_attn
if perturbation_configs is not None:
@@ -1791,7 +1792,7 @@ class LTX2VideoTransformer3DModel(CachableDiT, OffloadableDiTMixin):
) = _ltx2_batched_perturbation_mask(
perturbation_configs,
"skip_video_self_attn_blocks",
block.idx,
block_idx,
hidden_states,
)
if not skip_audio_self_attn:
@@ -1801,7 +1802,7 @@ class LTX2VideoTransformer3DModel(CachableDiT, OffloadableDiTMixin):
) = _ltx2_batched_perturbation_mask(
perturbation_configs,
"skip_audio_self_attn_blocks",
block.idx,
block_idx,
audio_hidden_states,
)
if not skip_a2v_cross_attn:
@@ -1811,7 +1812,7 @@ class LTX2VideoTransformer3DModel(CachableDiT, OffloadableDiTMixin):
) = _ltx2_batched_perturbation_mask(
perturbation_configs,
"skip_a2v_cross_attn",
block.idx,
block_idx,
hidden_states,
)
if not skip_v2a_cross_attn:
@@ -1821,7 +1822,7 @@ class LTX2VideoTransformer3DModel(CachableDiT, OffloadableDiTMixin):
) = _ltx2_batched_perturbation_mask(
perturbation_configs,
"skip_v2a_cross_attn",
block.idx,
block_idx,
audio_hidden_states,
)
hidden_states, audio_hidden_states = block(