[jira] [Assigned] (ARROW-10015) [Rust] Implement SIMD for aggregate kernel sum

["Jörn Horstmann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-10015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jörn Horstmann reassigned ARROW-10015:
--------------------------------------

    Assignee: Jörn Horstmann

> [Rust] Implement SIMD for aggregate kernel sum
> ----------------------------------------------
>
>                 Key: ARROW-10015
>                 URL: https://issues.apache.org/jira/browse/ARROW-10015
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust
>            Reporter: Jorge
>            Assignee: Jörn Horstmann
>            Priority: Major
>
> Currently, our aggregations are made in a simple loop. However, as described [here|https://rust-lang.github.io/packed_simd/perf-guide/vert-hor-ops.html], horizontal operations can also be SIMDed, reports of 2.7x speedups.
> The goal of this improvement is to support SIMD for the "sum", for primitive types.
> The code to modify is in [here|https://github.com/apache/arrow/blob/master/rust/arrow/src/compute/kernels/aggregate.rs]. A good indication that this issue is completed is when the script
> {{cargo bench --bench aggregate_kernels && cargo bench --bench aggregate_kernels --features simd}}
> yields a speed-up.
>  



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