[Ascend] support qwen35 mtp on Ascend-A3#4721
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- op_backend.py: MTP detection (is_multi_token_decoding), effective_is_decoding, actual_seq_lengths_q, vendor_device_init trigger - attention.py: add is_multi_token_decoding and actual_seq_lengths_q fields - pagedattention.py: MTP verify reuses paged_prefill_attention - config.py: SpecDecodeConfig.from_config add device_type param - config_builder.py: pass device_type to SpecDecodeConfig Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Keep only the generic draft-step and accepted-token metadata plumbing in lmdeploy so the dlinfer backend can drive Ascend multi-token state updates without broad runtime hooks in the core runtime. Made-with: Cursor
wanfengcxz
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Motivation
support qwen35 MTP for ascend
Modification
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