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In addition to permutes and shuffles, “unpacks” can be used to rearrange data as long as the rearrangement conforms to a very specific pattern.
\nOct 14, 2026
\n∙ Paid
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This is the twentieth video in Part 5 of the Performance-Aware Programming series. Please see the Table of Contents to quickly navigate through the rest of the course as it is updated, and the code repository for downloadable code listings.
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\n", "content_markdown": "In addition to permutes and shuffles, “unpacks” can be used to rearrange data as long as the rearrangement conforms to a very specific pattern.\n\nOct 14, 2026\n\n∙ Paid\n\n[](https://substackcdn.com/image/fetch/$s_!JN1f!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb6be371-00ab-45c7-b07e-70167a3dee6a_3840x2160.jpeg)\n\n*This is the twentieth 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.*\n\n## The full video is for paid subscribers\n\n[Already a paid subscriber? **Sign in**](https://substack.com/sign-in?redirect=%2Fp%2Fsimd-unpacks&for_pub=computerenhance&change_user=false)\n\n[](https://www.computerenhance.com/s/programming-courses)\n\nProgramming Courses\n\nA series of courses on programming topics.\n", "dateCreated": "2026-10-14T21:35:38.678109349+00:00", "date_created": "2026-10-14T20:58:25+00:00", "date_modified": "2026-10-14T20:58:25+00:00", "date_published": "2026-10-14T20:58:25+00:00", "description": "In addition to permutes and shuffles, “unpacks” can be used to rearrange data as long as the rearrangement conforms to a very specific pattern.", "external_url": "https://www.computerenhance.com/p/simd-unpacks", "git": { "commit": "ebb0941c5c06a2ab2377342d607535262a3e969e", "path": "items/computerenhance-com/2026/10/2026-10-14-simd-unpacks.md", "permalink": "https://github.com/aymericbeaumet/aggr-instance/blob/ebb0941c5c06a2ab2377342d607535262a3e969e/items/computerenhance-com/2026/10/2026-10-14-simd-unpacks.md" }, "id": "urn:aggr:item:e7b34f2817fef75f287fc6e38602bfde0218ec05", "isBasedOn": { "@id": "https://www.computerenhance.com/p/simd-unpacks" }, "mainEntity": { "@id": "https://www.computerenhance.com/p/simd-unpacks", "@type": "CreativeWork", "archivedAt": { "@id": "https://aggr.aymericbeaumet.com/items/computerenhance-com/2026-10-14-simd-unpacks/#webpage" }, "dateModified": "2026-10-14T20:58:25+00:00", "datePublished": "2026-10-14T20:58:25+00:00", "headline": "SIMD Unpacks", "image": { "@type": "ImageObject", "caption": null, "height": 90, "url": "https://substack-video.s3.amazonaws.com/video_upload/post/220432985/b76e7068-f7ea-4c2c-9fa1-34c8f618ebf1/transcoded-139853.png", "width": 160 }, "timeRequired": "PT1M", "url": "https://www.computerenhance.com/p/simd-unpacks", "wordCount": 91 }, "name": "Archived snapshot: SIMD Unpacks", "preview": { "alt": null, "color": null, "height": 90, "placeholder": { "data_url": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII=", "hash": "" }, "url": "https://substack-video.s3.amazonaws.com/video_upload/post/220432985/b76e7068-f7ea-4c2c-9fa1-34c8f618ebf1/transcoded-139853.png", "width": 160 }, "reading_minutes": 1, "replicated_at": null, "source": "computerenhance-com", "source_name": "Computer, Enhance!", "summary": "In addition to permutes and shuffles, “unpacks” can be used to rearrange data as long as the rearrangement conforms to a very specific pattern.", "tags": [], "temporalCoverage": "2026-10-14T21:35:38.678109349+00:00", "title": "SIMD Unpacks", "url": "https://aggr.aymericbeaumet.com/items/computerenhance-com/2026-10-14-simd-unpacks/", "word_count": 91 }