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kferjaouiandClaude Fable 5.1
272b483c6c
ClusterFinderCUDA mixed three things: which kernel runs and what device
state it needs, the per-stream buffers, and the batching pipeline. A
second algorithm meant a second copy of all of it. The pieces are now
separate and the driver is templated on the algorithm.
cuda::FixedWindow (clusterfinder_algo.cuh) the fixed-size window
search: DeviceState pointer bundle, launch(), and the pedestal
transforms. Stateless; every pointer is supplied by the caller,
so external code can drive the kernel on its own memory and
stream without touching the driver.
StreamContext<Algo> one stream's buffers, RAII, non-movable.
ClusterFinderCUDA<Algo> the pipeline, unchanged in behaviour.
no_2x2_cluster moves to Cluster.hpp so the kernel and algorithm headers
no longer drag in ClusterFinder.hpp. The Python factory gains
algorithm="fixed_window"; memory stays internal.
Kernel SASS identical to before. Positions identical against
ClusterFinderFrozen for 3x3, 5x5, 9x9 (stream and graph finders). New
Catch2 test drives FixedWindow::launch on raw cudaMalloc buffers and
requires exact agreement with the driver.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>