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wire 2026-07-31
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JAX FIXES FP8 ATTENTION, LANDS TPU CUMULATIVE REDUCTIONS

By RepoJournal · Filed · About Google · Composed from the cited sources · methodology

Anthonios Partheniou kodlan copybara-service release-please[bot] sakthivelmanii jax authors Amir Hardon
9 people shipped this
Anthonios Partheniou @parthea 2 cited kodlan @kodlan 1 cited copybara-service @copybara-service 1 cited release-please[bot] @release-please[bot] 1 cited sakthivelmanii @sakthivelmanii 1 cited jax authors @Google-ML-Automation Amir Hardon @amirh sycai @sycai hebaalazzeh @hebaalazzeh

JAX shipped critical fixes for fp8 batching rules and native TPU support for cumulative operations, while the Gemini SDK crossed v2.16.0 with new robotics models and expanded grounding capabilities.

The JAX team merged a follow-up fix for fp8 attention batching that applies the same normalization logic as the earlier non-fp8 correction [1], addressing a root cause that affected multiple code paths. Simultaneously, cumulative reductions (cumsum, cumprod, cummax, cummin) now lower to native chlo.ScanOp on TPU [2], mirroring GPU behavior while preserving backward compatibility through the TPU compiler's rewrite pipeline. On the SDK side, python-genai v2.16.0 landed with environment resource support, native GoogleMaps Tool grounding types, and the Gemini Robotics ER 2 Preview model [3], expanding multimodal capabilities for production workloads. The google-cloud-python ecosystem saw Protobuf 6.33.5 become a hard requirement [6] to unblock client library modernization, while SQLAlchemy-Spanner gained native UUID data type support with opt-in backward compatibility [5]. One caveat: google-cloud-bigquery was temporarily dropped from bulk release due to a socket leak in the dbapi connection tests [4], requiring isolated investigation before reintegration.

Action items

References

  1. [1] Fix cudnn fp8 attention batching rules ↗ google/jax
  2. [2] [JAX] Lower cumulative reductions to chlo.ScanOp on TPU. ↗ google/jax
  3. [3] v2.16.0 ↗ googleapis/python-genai
  4. [4] chore: remove google-cloud-bigquery from bulk release due to failing system test (#17944) ↗ googleapis/google-cloud-python
  5. [5] feat(sqlalchemy-spanner): native UUID data type support in dialect ↗ googleapis/google-cloud-python
  6. [6] fix: require Protobuf 6.33.5+ ↗ googleapis/google-cloud-python

$ ls google/reviews/ # the step-back reads

the week in review JAX drops legacy IFRT device APIs, google-auth adds 3.15 the month in review JAX free-threading push reshapes 0.11.2 and 0.12 cleanup
Full archive → Weekly reviews →

Quick answers

What shipped in Google on July 31, 2026?
JAX shipped critical fixes for fp8 batching rules and native TPU support for cumulative operations, while the Gemini SDK crossed v2.16.0 with new robotics models and expanded grounding capabilities. In total, 20 commits, 16 pull requests, and 2 releases landed.
Who contributed to Google on July 31, 2026?
9 developers shipped this update, including kodlan, copybara-service, jax authors, release-please[bot], Amir Hardon, Anthonios Partheniou, sakthivelmanii, and sycai, and 1 more.
What were the notable Google updates?
Fix cudnn fp8 attention batching rules, [JAX] Lower cumulative reductions to chlo.ScanOp on TPU, and v2.16.0.
♥

$ log Google --recent

JAX pins OpenXLA revision, disables overlap_test against older libtpu 5 shipped JAX adds type-2 and type-3 Hermitian eigensolves, lexsort batching cuts unique compile time 69 shipped JAX hijax flags read at call time, Spanner stops deleting multiplexed sessions 112 shipped Vertex AI client timeout fix, Compute v1 API regenerated 87 shipped

$ log --all # elsewhere on the wire

@vuejs Vue language tools stop calling registerHooks on buggy Node builds @openclaw OpenClaw's deslop sweep removes 1,000+ production lines

$ ls showcases/

Rails Django Laravel Node.js Go Vercel Vue.js Kubernetes HashiCorp Arch Linux Linux Anthropic

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