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build: update PyTorch base image to 26.09 - #6258

Merged

balasaajay merged 17 commits into

NVIDIA-NeMo:mainfrom

balasaajay:build/pytorch-26.09-validation

Oct 10, 2026

Merged

build: update PyTorch base image to 26.09#6258
balasaajay merged 17 commits into
NVIDIA-NeMo:mainfrom
balasaajay:build/pytorch-26.09-validation

Commits on Sep 30, 2026
- build: update PyTorch base image to 26.09
  
  svcnemo-autobot
  authored and
  balasaajay
  committed
  8f16025
- fix(training): count full dense sequences in context-parallel FLOPs
  balasaajay
  committed
  8379601
- docs: include the formal PR review rubric in navigation
  balasaajay
  committed
  efee695
Commits on Oct 1, 2026
- Merge branch 'main' into build/pytorch-26.09-validation
  balasaajay
  authored
  3d2c174
Commits on Oct 8, 2026
- chore: resolve conflicts with main
  balasaajay
  committed
  2380f7b
Commits on Oct 9, 2026
- test(nemotron-omni): capture stalled backward thread stacks
  balasaajay
  committed
  4d62eb8
- build: align FlashAttention with the 26.09 CUTLASS runtime
  balasaajay
  committed
  c101713
- build: pin MCore RADIO packed sequence length fix
  balasaajay
  committed
  541b945
- chore: merge main and retain RADIO packed sequence fix
  balasaajay
  committed
  43efbe6
- build(mcore): synchronize the pinned main revision
  balasaajay
  committed
  d9500bb
- fix(training): keep Omni vision sequence maxima as integers
  balasaajay
  committed
  d8df76d
- fix(vision): pass integer maxima to packed attention
  balasaajay
  committed
  973efa2
- fix(container): keep PyArrow compatible with NumPy 1
  balasaajay
  committed
  fa0b9cb
- fix(attention): default to FA2 and disable FA4 in CI
  balasaajay
  committed
  266efd6
- fix(ci): scope FlashAttention selection to tests
  balasaajay
  committed
  6f07fbf
- build(mcore): use upstream revision for FA2
  balasaajay
  committed
  36d03ce
- revert: remove FA4-only vision metadata changes
  balasaajay
  committed
  d28698b

Commits

Commits on Sep 30, 2026

Commits on Oct 1, 2026

Commits on Oct 8, 2026

Commits on Oct 9, 2026