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/ok to test ea47e50 |
1 of 12 tasks
k-means can leave lists empty, for example when the dataset has fewer distinct rows than n_lists. Building from device data, or from host data that fits on the device, then launched the quantization kernels with zero blocks and failed with cudaErrorInvalidValue. The streaming build skipped empty lists, which left their rotated centroids uninitialized. Compute only the rotated centroid for an empty list and skip the kernels that have no rows to process. Add a regression test with fewer distinct rows than lists.
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/ok to test 8aff73e |
This was referenced Oct 10, 2026
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Reproduces the flaky
NEIGHBORS_ANN_IVF_RABITQ_TESTfailureIvfRabitq/f32_f32_i64.build_host_input_search/1(dim = 1) from the 2026-09-30 nightly (job):CI is reduced to the failing configuration (13.3.0, arm64, ubuntu26.04, GH200), 4 copies, running the IVF-RaBitQ test repeatedly with extra diagnostics.
Part of #2783 (workstream G).