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[Not for merge] Support Zipformer encoder for LLM based ASR #1944

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[Not for merge] Support Zipformer encoder for LLM based ASR #1944

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@yfyeung yfyeung commented May 15, 2025 •
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This PR add zipformer_llm_zh recipe.

Some new features / modifications:

  • Introduce batch shaving mechanism, dynamically reduce batch when OOM happen to prevent training interruptions.
  • Transition to full DeepSpeed training, removing torch.autocast (supported by Fix scaling.py: ensure SwooshL/SwooshR output dtype matches input dtype #1940).
  • Expose more parameters of DynamicBucketSampler for more efficient batching.
  • Fix data preparation from huggingface.
  • Set world_size and rank explicitly for dataloader.

yfyeung and others added 18 commits April 30, 2025 09:58
@yfyeung yfyeung changed the title [WIP] Add Streaming Zipformer LLM recipe for ASR [WIP] Add streaming Zipformer encoder for LLM based ASR May 15, 2025
@yfyeung yfyeung changed the title [WIP] Add streaming Zipformer encoder for LLM based ASR [WIP] Support streaming Zipformer encoder for LLM based ASR May 15, 2025
@yfyeung yfyeung changed the title [WIP] Support streaming Zipformer encoder for LLM based ASR [WIP] Support Zipformer encoder for LLM based ASR May 15, 2025
@yfyeung yfyeung changed the title [WIP] Support Zipformer encoder for LLM based ASR [Not for merge] Support Zipformer encoder for LLM based ASR Jun 2, 2025
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@yfyeung @yaozengwei