refactor(trainer): remove deprecated light-megatron backend path#585
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Xiaoming-AMD merged 3 commits intomainfrom Mar 23, 2026
Merged
refactor(trainer): remove deprecated light-megatron backend path#585Xiaoming-AMD merged 3 commits intomainfrom
Xiaoming-AMD merged 3 commits intomainfrom
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WangLingxun
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wenxie-amd
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- Update third_party/Megatron-LM to core_v0.16.0.
- Adapt muon optimizer patch signatures/call paths to Megatron 0.16 (config_overrides, optimizer arg forwarding).
- Relax turbo TE spec provider gate to <0.17 for DeepSeek compatibility on v0.16.
- Fix DDP/FSDP grad-sync compatibility by allowing _BaseDataParallel.{start,finish}_grad_sync to accept extra kwargs (e.g. force_all_reduce).
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Remove the legacy light-megatron trainer implementation and clean up all related framework aliases. This change deletes the lightmegatron trainer modules and removes light-megatron routing from parser and hook dispatchers (train pretrain and projection performance), so framework resolution now follows megatron directly without a compatibility alias.