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[Bug]: No MTP support for Qwen3 NextΒ #10313

@nutriarch

Description

@nutriarch

System Info

There currently is not any support for MTP like DeepSeek has for Qwen3 next

Who can help?

No response

Information

  • The official example scripts
  • My own modified scripts

Tasks

  • An officially supported task in the examples folder (such as GLUE/SQuAD, ...)
  • My own task or dataset (give details below)

Reproduction

Attempt to run Qwen3 Next like the example but with MTP

Expected behavior

Support like DeepSeek has

actual behavior

Super slow inference due to the fact that there's no MTP speculative decoding support for Qwen3 Next

additional notes

class DeepseekV3MTP(DeepseekV3DecoderLayer):

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    Speculative Decoding<NV>MTP/Eagle/Medusa/Lookahead/Prompt-Lookup-Decoding/Draft-Target-Model/ReDrafterbugSomething isn't working

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