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/ok to test 13b8d0d |
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/ok to test 224cb6f |
The expanded L2 distance epilogues clamp round-off of self-distances to zero when the two norms are equal and the squared distance is below an absolute tolerance. For data with a small magnitude, this also zeroes the distances between distinct points with equal norms. Spectral embeddings of graphs with several connected components are such data, which made k-means (and spectral clustering) assign points to the wrong clusters on GPUs that use the CUTLASS fused 1-NN kernel. Scale the tolerance with the norms when they are smaller than one.
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/ok to test 9e373d5 |
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Reproducer for the flaky
SpectralClusteringTestF.Result/7failure on arm64 A100 (#2094). Tracking: #2783.CI is reduced to the arm64 / CUDA 12 / A100 C++ test job, which repeats the spectral clustering tests and runs extra diagnostics.