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Closing this reproducer. It showed the recall misses are the tail of a stable distribution at itopk_size=64 with num_partitions=1, not a library bug. The fix is in #2839 (52,000 recall evaluations, 0 failures). |
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Reproducer for a flaky recall failure in
NEIGHBORS_ANN_CAGRA_HALF_UINT32_TESTAnnCagraMultiPartitionTest/AnnCagraMultiPartitionTestF16_U32.Search/0(recall 0.966 vs a minimum of 0.97), found by the stress run in #2793. Part of #2783 (workstream Q).CI is reduced to the arm64 CUDA 13.3 build and the nightly gb300 and a100 C++ test configurations (two copies each). The test script repeats the single-partition multi-partition cases and logs the recall of every repetition, to get the recall distribution.