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https://issues.apache.org/jira/browse/LUCENE-9838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17302462#comment-17302462
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Robert Muir commented on LUCENE-9838:
-------------------------------------

I attached "standalone" patch (no logic changes) for convenience to see the 
whole function. I used it to generate the hacky pull request.

> simd version of VectorUtil.dotProduct
> -------------------------------------
>
>                 Key: LUCENE-9838
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9838
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Robert Muir
>            Priority: Major
>         Attachments: LUCENE-9838.patch, LUCENE-9838_standalone.patch
>
>          Time Spent: 5h 50m
>  Remaining Estimate: 0h
>
> Followup to LUCENE-9837
> Let's explore using JDK 16 vector API to speed this up more. It might be a 
> hassle to try to MR-JAR/package up for users (adding commandline flags and 
> stuff), but it gives good performance.



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