---
title: Horizontal Operations
link: https://www.computerenhance.com/p/horizontal-operations
source: computerenhance-com
published: 2026-10-21T22:23:39Z
updated: 2026-10-21T22:23:39Z
first_seen: 2026-10-21T22:40:01.164745172Z
summary: We can employ our knowledge of shuffles and permutes to make horizontal operations out of the vertical ones provided by SIMD instruction sets.
content: extracted
html: 2026-10-21-horizontal-operations.html
remote_preview:
  url: https://substack-video.s3.amazonaws.com/video_upload/post/221554457/9f57948b-88c3-4bba-9917-12a130a4bb3e/transcoded-56077.png
---

--:--

--:--

### Paid episode

The full episode is only available to paid subscribers of Computer, Enhance!

We can employ our knowledge of shuffles and permutes to make horizontal operations out of the vertical ones provided by SIMD instruction sets.

Oct 21, 2026

∙ Paid

[![](https://substackcdn.com/image/fetch/$s_!slLN!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6dfa8422-1d63-497d-b93f-ddfa10f0cb78_3840x2160.jpeg)](https://substackcdn.com/image/fetch/$s_!slLN!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6dfa8422-1d63-497d-b93f-ddfa10f0cb78_3840x2160.jpeg)

*This is the twenty-first video in Part 5 of the Performance-Aware Programming series. Please see the [Table of Contents](https://www.computerenhance.com/p/table-of-contents) to quickly navigate through the rest of the course as it is updated, and [the code repository](https://github.com/cmuratori/computer_enhance) for downloadable code listings.*