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[BUG] Qwen3-next MTP. Fix attn metadata build bug (#26564)

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Signed-off-by: Vadim Gimpelson <vadim.gimpelson@gmail.com>
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Vadim Gimpelson 2025-10-10 22:59:03 +04:00 committed by GitHub
parent 7c12763b24
commit e94cfd51da
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1 changed files with 6 additions and 7 deletions
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13
vllm/v1/spec_decode/eagle.py
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@ -41,7 +41,6 @@ from vllm.v1.sample.metadata import SamplingMetadata
from vllm.v1.spec_decode.metadata import SpecDecodeMetadata
from vllm.v1.utils import CpuGpuBuffer
from vllm.v1.worker.gpu_input_batch import CachedRequestState, InputBatch
from vllm.v1.worker.ubatching import dbo_current_ubatch_id
logger = init_logger(__name__)
@ -234,11 +233,11 @@ class EagleProposer:
assert self.runner is not None
# FIXME: need to consider multiple kv_cache_groups
ubatch_id = dbo_current_ubatch_id()
attn_metadata_builder = self.runner.attn_groups[0][0].metadata_builders[
ubatch_id
]
if self.attn_metadata_builder is None:
attn_metadata_builder = self._get_attention_metadata_builder()
else:
attn_metadata_builder = self.attn_metadata_builder
attn_metadata = attn_metadata_builder.build_for_drafting(
common_attn_metadata=common_attn_metadata, draft_index=0
)
@ -1076,7 +1075,7 @@ class EagleProposer:
inputs_embeds=inputs_embeds,
)
def _get_attention_metadata_builder(self) -> list[AttentionMetadataBuilder]:
def _get_attention_metadata_builder(self) -> AttentionMetadataBuilder:
"""Find and return the attention metadata builders for EAGLE layers.
Returns: