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Posted to jira@arrow.apache.org by "Todd Farmer (Jira)" <ji...@apache.org> on 2022/07/12 14:05:02 UTC

[jira] [Assigned] (ARROW-13170) [C++] Reducing branching in compute/kernels/vector_selection.cc

     [ https://issues.apache.org/jira/browse/ARROW-13170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Farmer reassigned ARROW-13170:
-----------------------------------

    Assignee:     (was: Niranda Perera)

This issue was last updated over 90 days ago, which may be an indication it is no longer being actively worked. To better reflect the current state, the issue is being unassigned. Please feel free to re-take assignment of the issue if it is being actively worked, or if you plan to start that work soon.

> [C++] Reducing branching in compute/kernels/vector_selection.cc
> ---------------------------------------------------------------
>
>                 Key: ARROW-13170
>                 URL: https://issues.apache.org/jira/browse/ARROW-13170
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Niranda Perera
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 5h
>  Remaining Estimate: 0h
>
> [~wesm] pointed out that the selection operations can be improved by using a non-branching method in ML and [~yibocai] confirmed this.  
> [https://lists.apache.org/thread.html/rcffa661ca3526863fc5148ed3c111a72f03b2ce2626178bd83570aa6%40%3Cdev.arrow.apache.org%3E]
>  
> Evaluate the following
>  # Using branch-less approach
>  # Check if `BitmapWordReader` can achieve better performance



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