Add cuda.coop ordering and selection primitives - #11047
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Complete the portable API with Merge Sort, radix rank and sort, and TopK. Add matching CUTLASS and Numba-CUDA-MLIR implementations, focused examples, documentation, typing coverage, and CI metadata. Signed-off-by: Trent Nelson <trent@trent.me>
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This was referenced Aug 27, 2026
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Why this is needed
This layer completes the planned cooperative primitive surface with ordering
and selection operations, then documents the complete non-AOT API with
runnable examples for both compiler integrations.
What this PR includes
Compiler-lifecycle optimizations remain separate in the PCH and AOT layers.
Stack
5 of 7, based on PR #11046.
The next layer adds process-private CUTLASS NVRTC PCH reuse.
Local validation
ordering/selection compile/runtime cases passed
result validation
compileall, changed-file pre-commit, Ruff, import audit,and
git diff --checkpassedWheel and installed-package qualification, GitHub CI, and automated AI review
are deferred for now.