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Add Target Feature Recommendations to Arrow Crate Docs #2305

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merged 1 commit into from
Aug 3, 2022

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tustvold
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@tustvold tustvold commented Aug 3, 2022

Continues the process of adding more documentation, this adds a section on how to get LLVM to be slightly less conservative and use instructions from this decade 馃槅

I put this as the first thing in the crate docs, as I think it is important, and highlights that we care about performance, but happy to move if people feel differently.

@tustvold tustvold added the development-process Related to development process of arrow-rs label Aug 3, 2022
@github-actions github-actions bot added the arrow Changes to the arrow crate label Aug 3, 2022
@tustvold tustvold changed the title More docs Add Target Feature Recommendations to Arrow Crate Docs Aug 3, 2022
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Thanks. I think this is useful.

@tustvold tustvold merged commit 2cf4cd8 into apache:master Aug 3, 2022
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ursabot commented Aug 3, 2022

Benchmark runs are scheduled for baseline = f78d2e6 and contender = 2cf4cd8. 2cf4cd8 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped 鈿狅笍 Benchmarking of arrow-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped 鈿狅笍 Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped 鈿狅笍 Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped 鈿狅笍 Benchmarking of arrow-rs-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java

//! particularly for x86_64, favour portability over performance, and LLVM will consequently avoid
//! using more recent instructions that would result in errors on older CPUs.
//!
//! To address this it is recommended that you specify the override the LLVM defaults either
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Oops wording error here, will fix 馃槄

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