Create PR to main with cherry-pick from release

Workflow runs for Create PR to main with cherry-pick from release

• ci: Narrow Testmon cache compatibility inputs (#8001)

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  Create PR to main with cherry-pick from release#2721:Commite0c5e18pushedbygithub-merge-queue[bot]Bot
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  Oct 11, 202621s
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• test: Mark GDN2 and MoE overlap cases flaky in dev (#8120)

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  Create PR to main with cherry-pick from release#2720:Commit36ba7f6pushedbybalasaajay
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  Oct 11, 202618s
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• Add DSA indexer weights projection precision controls (#6842)

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  Create PR to main with cherry-pick from release#2719:Commit736353bpushedbygithub-merge-queue[bot]Bot
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  Oct 11, 202621s
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• Support DCP checkpointing for the Megatron-FSDP v2 optimizer (#6215)

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  Create PR to main with cherry-pick from release#2718:Commita8a5977pushedbygithub-merge-queue[bot]Bot
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  Oct 11, 202625s
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• Extract MFSDP context and centralize module metadata (#6369)

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  Create PR to main with cherry-pick from release#2717:Commita3e1f82pushedbygithub-merge-queue[bot]Bot
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  Oct 11, 202620s
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• [Parallel to mistral #652] Fuse standalone GDP and MoE kernels. (#7841)

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  Create PR to main with cherry-pick from release#2716:Commit3140ce4pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202620s
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• Make Triton autotune configuration selection deterministic (#6076)

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  Create PR to main with cherry-pick from release#2715:Commitebb93b2pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202622s
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• Resolve the checkpoint iteration on every rank in the MIMO load check…

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  Create PR to main with cherry-pick from release#2714:Commit9445e48pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202624s
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• build: update development PyTorch image to 26.09 (#7725)

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  Create PR to main with cherry-pick from release#2713:Commit5320426pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202622s
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• test(mfsdp): separate parameter, optimizer, and context tests (#6633)

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  Create PR to main with cherry-pick from release#2712:Commit9a81a54pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202622s
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• fix(gtp): clear dummy gradients before DDP readiness (#7467)

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  Create PR to main with cherry-pick from release#2711:Commit6cad8f6pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202621s
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• refactor(inference): separate runtime setup from training state (#7792)

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  Create PR to main with cherry-pick from release#2710:Commit718d30fpushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202623s
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• Require dist optimizer with --fp4-param-gather (#8009)

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  Create PR to main with cherry-pick from release#2709:Commitbf66a98pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202628s
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• fix(mtp): preserve padding masks and handle empty auxiliary loss (#7611)

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  Create PR to main with cherry-pick from release#2708:Commite95ea35pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202623s
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• Bump nvidia-modelopt minimum to 0.47 (#7628)

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  Create PR to main with cherry-pick from release#2707:Commit6a6c8aapushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202620s
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• Fix vocab-parallel MTP loss for TP>1 (#7682)

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  Create PR to main with cherry-pick from release#2706:Commitb86e75cpushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202622s
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• Expose rank and tensor ranges in GlobalLayout (#7963)

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  Create PR to main with cherry-pick from release#2705:Commit4603a83pushedbygithub-merge-queue[bot]Bot
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  Oct 10, 202624s
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• refactor: Centralize MFSDP context construction (#7895)

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  Create PR to main with cherry-pick from release#2704:Commit43ecc88pushedbygithub-merge-queue[bot]Bot
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  Oct 9, 202629s
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• Accept iterable inputs in GlobalLayout constructor (#7993)

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  Create PR to main with cherry-pick from release#2703:Commitfde43b6pushedbygithub-merge-queue[bot]Bot
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  Oct 9, 202627s
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• Add DeepEP v2 flex dispatcher backend (#5153)

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  Create PR to main with cherry-pick from release#2702:Commit30b9ffepushedbygithub-merge-queue[bot]Bot
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  Oct 9, 202626s
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• Make the global process-group usage check report-only (#7986)

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  Create PR to main with cherry-pick from release#2701:Commit9773005pushedbygithub-merge-queue[bot]Bot
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  Oct 9, 202624s
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• Use generic get_language_model function to extract LM from multimodal…

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  Create PR to main with cherry-pick from release#2700:Commitdef2663pushedbygithub-merge-queue[bot]Bot
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  Oct 9, 202622s
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• ci: Fail linting on training imports from Megatron Core (#7903)

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  Create PR to main with cherry-pick from release#2699:Commitc4129afpushedbybalasaajay
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  Oct 9, 202623s
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• build: remove Nsight Systems EFA metrics plugin from dev image (#7953)

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  Create PR to main with cherry-pick from release#2698:Commit0844b08pushedbybalasaajay
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  Oct 9, 202618s
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• Add packed THD context parallelism for DSv4 (#7469)

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  Create PR to main with cherry-pick from release#2697:Commit6605602pushedbygithub-merge-queue[bot]Bot
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  Oct 9, 202621s
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