[yifjiang]

Summary

Pure fabric identities and domain separation before native loading; optional dependency absence must not hide unrelated import errors or skip the stdlib suite.

Review slice D15 of #16748; part of #16747 and #16746. This draft targets codex/kv-reuse-d14-dispatch-ownership for a complete incremental review diff of 378 additions plus deletions, including tests, documentation and extraction glue.

Reuse remains experimental and default off. Retained inventory is advisory, complete compatible rank parts must precede readiness, and native operations retain ownership until quiescence. Supported GPU activation also requires the companion KVCR/native slices and the declared deployment profile.

Validation

All configured pre-commit hooks passed for this exact slice on allocated SLURM. Stack-level CPU regression coverage is summarized on D31; each draft still requires its own applicable CI in the Checks tab. Historical combined-head and hardware results retain their original source scope.

[devin-ai-integration]

⏹️ Dynamo PR CI cancelled — run 41941659926 (attempt 1) on 2f130ddec9

Gate checks: ❌ backend-status-check · ❌ deploy-status-check · ✅ dynamo-status-check

Framework	Build	Deploy
vLLM	⏹️ 1 ✅ 5	⏹️ 2 ✅ 2

Failure details

No jobs failed; 3 jobs were cancelled (the two red gate checks only mirror these cancels). Since nothing failed before them, these are not fail-fast cancels; they look like a manual/concurrency cancel (or a job time limit on the ~1h build). Rerunning the cancelled jobs should be enough.

• ⏹️ vllm-local-dev / Build multi-arch cuda13.0: Build and Push Image cancelled after ~59 min (##[error]The operation was canceled.).
• ⏹️ vllm Deploy Test / agg and vllm Deploy Test / agg_router: Run Dynamo Deploy Test cancelled after ~25 min (##[error]The operation was canceled.).

For agents

{"pr": 18033, "run_id": 41941659926, "run_attempt": 1, "head_sha": "2f130ddec997136f2592a2b5cdfa251054440793",
 "failures": [],
 "cancelled": [{"job": "vllm-local-dev / Build multi-arch cuda13.0", "job_id": 126963928959, "step": "Build and Push Image"},
               {"job": "vllm Deploy Test / agg", "job_id": 126980617512, "step": "Run Dynamo Deploy Test"},
               {"job": "vllm Deploy Test / agg_router", "job_id": 126980617493, "step": "Run Dynamo Deploy Test"}]}

_{Posted automatically by Devin for run 41941659926. Updated on every full-CI run of this PR.}

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[yifjiang]

/ok to test 91dfab4

[yifjiang]

/ok to test 2f130dd