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The Wire · Showcase

COSMOS 3 LANDS IN DIFFUSERS, PYTORCH 2.12 BREAKS IP-ADAPTER TESTS

By RepoJournal · Filed · About Hugging Face

NVIDIA's unified world foundation model is now integrated into Diffusers, but the PyTorch randomness shift is forcing test rewrites across the stack.

Cosmos 3 [1] is shipping as a single Mixture-of-Transformers pipeline that consolidates world generation, physical reasoning, and action prediction into one forward pass, replacing the three-model approach from earlier releases. The IP-Adapter tests for Stable Diffusion are failing on PyTorch 2.12 [2] because torch.randn no longer produces deterministic outputs for the same seed, forcing engineers to patch pipeline-level noise generation directly and update expected output slices. Meanwhile, the CI infrastructure across transformers-test-ci is stabilizing with cache fixes [3] and branch ref corrections [4] to prevent lock file creation errors and git checkout conflicts on main pushes. The ai-reviewer tooling picked up performance improvements in git operations [5] while documentation cleanup continues across the board [6] [7] [8].

Action items

References

  1. [1] Adding Cosmos 3 to Diffusers ↗ huggingface/diffusers
  2. [2] This PR updates the Stable Diffusion IP-Adapter integration ↗ huggingface/diffusers
  3. [3] Use tmp dataset cache + tmp HF modules cache ↗ huggingface/transformers-test-ci
  4. [4] use main instead of main:main ↗ huggingface/transformers-test-ci
  5. [5] improve git operations performance huggingface/ai-reviewer
  6. [6] useless in the README huggingface/ai-reviewer
  7. [7] pesky BRs huggingface/ai-reviewer
  8. [8] useless link huggingface/ai-reviewer

FAQ

What changed in Hugging Face on May 28, 2026?
NVIDIA's unified world foundation model is now integrated into Diffusers, but the PyTorch randomness shift is forcing test rewrites across the stack.
What should Hugging Face teams do about it?
Review Cosmos 3 pipeline integration [ref:7] for production readiness before merging • Test IP-Adapter workflows against PyTorch 2.12 deterministic patches [ref:6] • Merge cache and branch ref fixes [ref:3] [ref:5] to unblock CI pipeline
Which Hugging Face repositories shipped on May 28, 2026?
huggingface/diffusers, huggingface/transformers-test-ci, huggingface/ai-reviewer

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