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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.1.0
    • 3.1.0
    • ML
    • None

    Description

      According to the performance test in https://issues.apache.org/jira/browse/SPARK-31783, the performance gain is mainly related to the nnz of block.

      So it is reasonable to control the size of block.

       

      I had some offline discuss with Weichen Xu, then we think following changes are worthy:

      1, infer an appropriate blockSize (MB) based on numFeatures and nnz by default;

      2, impls should use a relative small memory footprint when processing one block, and should not use a large pre-allocated buffer, so we need to revert gmm;

      3, use new blockify strategy in LinearSVC/LoR/LiR/AFT;

       

       

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            podongfeng zhengruifeng
            podongfeng zhengruifeng
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