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Commits on Aug 11, 2026

• [megatron] feat: bucket packed sequence lengths (#7358)

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  ISEEKYAN

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  codex

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• [ci] chore: fix npu ci (#7354)

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  wucong25

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• [megatron] fix: add backward compatibility with older Megatron-Bridge versions (#6682)

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  nuerxiati

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  cursoragent

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• [megatron] feat: cache the Megatron-Bridge HF export plan across weight updates (#7348)

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  Begunner

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• [megatron] feat: add dynamic context parallel scheduling (#6555)

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  xiaoyao0115

  and

  ISEEKYAN

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• [reward] feat: support deterministic reward for user-defined generative RM paths (#7027)

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  KaisennHu

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Commits on Aug 10, 2026

• [megatron] fix: make DeepSeek-V4 context parallelism actually runnable (#7297)

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  HaochenYuan

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  HollowMan6

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• [misc] fix: warn on engine backend import failure instead of silent skip (#7334)

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  ji-huazhong

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• [vllm] fix: resolve .base_layer on the vLLM receiver for non-merged LoRA sync (#7327)

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  HollowMan6

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• [algo] fix: carry running_return through observation spans in REINFORCE++ (#7278) (#7300)

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  shotsan

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  santosh-agebold

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• [ray] fix: remove conflicting PYTHONPATH forwarding (#7313)

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  yyDing1

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• [ckpt]: nccl broadcast bucket size fix (#7107)

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  parinayc20

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• [megatron] fix: forward mhc_multistream to MTP and skip activation reclaim for MTP checkpoints (#7328)

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  HollowMan6

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Commits on Aug 8, 2026

• [megatron] feat: migrate fused logprob/entropy from GPTModel.forward monkey-patch to Megatron output_processor hook (#6933)

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  chengcuiping

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  codex

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Commits on Aug 7, 2026

• [rocm] feat: enable DeepSeek-V4-Flash GRPO on AMD GPUs (#7050)

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  PeterYang12

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• [fsdp] fix: add FSDP1 restore handler for Decoupled PPO (#7306)

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  wuxibin89

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Commits on Aug 6, 2026

• [fsdp,veomni] fix: backfill missing state for DSD optimizer checkpoint (#7283)

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  wuxibin89

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• [fsdp,veomni] feat: support pad_to_length to reduce jit compile time (#7272)

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  wuxibin89

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Commits on Aug 5, 2026

• [ckpt, megatron] fix: megatron save checkpoints with strict false when vanilla_bridge is false (#7264)

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  RichardFido

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  r1chardf1d0

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Commits on Aug 4, 2026

• [algo, cfg, doc] feat: add DRO losses (#7245)

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  wyettzeng

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  codex

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• [megatron] fix: pad multidimensional THD tensors along the sequence dimension (#7261)

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  yyDing1

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• [veomni] feat: add DeepSeek V4 support (#7242)

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  wuxibin89

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• [data] feat: Add processor hook for multimodal RoPE kwargs (#7236)

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  ZihaoW123

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  codex

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• [megatron, hardware] fix: pure-torch fast_hadamard_transform fallback for DSA on ROCm (#7241)

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  PeterYang12

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• [rollout, sglang] fix: keep SGLang LoRA-free when model.lora.merge=True (#7234)

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  jamesruio

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• [algo, cfg] feat: add token-sum loss aggregation (#7197)

  wyettzeng

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Commits on Aug 3, 2026

• [veomni] fix: preserve GPT-OSS weights without expert parallelism (#7243)

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  Luosuu

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• [trainer] fix: build RL tokenizer/processor from HFModelConfig (#7220)

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  ZhiliangWu

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• [ckpt] fix: save base model's code, not the PeftModel wrapper's, in FSDP checkpoints (#7117)

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  ZhiliangWu

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• [megatron] feat: PP/VPP support for the steady delta export (#7223)

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  3 peopleauthored
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• [megatron] fix: preserve generation config during merge (#7199)

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  KANIKIG

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  codex

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• [algo] fix: micro-batch normalization for distillation loss (#7225)

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  JacobHelwig

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Commits on Aug 1, 2026

• [vllm] feat: enhance DeepSeek V4 fp8/fp4 linear and moe weight refit (#7224)

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  wuxibin89

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• [megatron] feat: support contiguous context-parallel layout for DeepSeek V4 (#7221)

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  ISEEKYAN

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  codex

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Commits on Jul 31, 2026

• [rollout] fix: cap partial rollout resumes at the remaining response budget (#7207)

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  benyucong

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