Tavian Barnes

I’m Tavian, a software developer interested in low-level, high-performance software across many domains. Currently a Staff Engineer at Shopify , I’ve previously worked at the University of Waterloo , Microsoft Research Montreal , a startup called Maluuba , and the University of Calgary .

Popular posts: 5
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Visit tavianator.com → RSS feedOn Hacker News Apr 2023 – Apr 2025

Systems & Performance 4 Software Engineering 3 Tools & Productivity 1 Hardware & Electronics 1 Databases & Data 1

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The Alder Lake SHLX Anomaly

2025234 points74 comments Hardware & Electronics details

Apparently shlx is a “medium latency” (3 cycles) instruction on Alder Lake. My disappointment is immeasurable, and my day is ruined.