Ensure MG to have the same number of allreduce calls in mean_stddev for sparse matrix to avoid hanging #6141
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Added test cases to test_dask_logistic_regression.py for better testing. No change to the main code (standardization.cuh). Ready for review. |
add the testcase of one GPU gets all zeroes revise test_standardization_example to reuse functions keep revise to reuse code give a better name
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The hanging occurs when one GPU gets a sparse matrix of all zero values, while other GPUs get-zero values.