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  1. Kudu
  2. KUDU-1448

Improve bitshuffle to enable AVX2 at runtime

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.8.0
    • Fix Version/s: 1.2.0
    • Component/s: cfile, perf
    • Labels:
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      Description

      I've been doing a little testing with the BITSHUFFLE encoding, and found that scan performance is improved about 30% on a Haswell cluster by enabling AVX2 when building the bitshuffle library. Unfortunately, that would cause a crash on earlier boxes, so we can't ship like that.

      I filed https://github.com/kiyo-masui/bitshuffle/issues/41 to do the switching at runtime.

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          Todd Lipcon

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              • Assignee:
                tlipcon Todd Lipcon
                Reporter:
                tlipcon Todd Lipcon
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                • Created:
                  Updated:
                  Resolved: