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code::dive conference 2014 - Scott Meyers: Cpu Caches and Why You Care

NOKIA Technology Center Wrocław · 231K views · 2015-01-05 · 1:16:58

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Overview

Scott Meyers explains how CPU caches work and why they matter for performance, covering cache levels, access speeds, associativity, and effects in multithreaded code. The focus is C++ and cache-aware, data-oriented programming.

On Hacker News

HN points to it as the go-to explanation of why memory layout beats pointer-chasing structures on real hardware.

Recommended by 3 HN people across 3 months · HN mentions 2018–2023

Topics

Software performance & optimizationComputer architecture & CPUsC, C++, Rust, Go & systems languages
Search by tags
cacheperformancec++data-oriented designmemory hierarchy

What people said

drainyard · 2018-10 · Strong recommendation

Two of my favorites: code::dive conference 2014 - Scott Meyers: Cpu Caches and Why You Care: [VIDEO] CppCon 2014: Mike Acton "Data-Oriented Design and C++": [LINK] They're mostly about C++ and cache aware/data oriented programming.

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coppsilgold · 2023-04 · Recommendation

Cache associativity, conflict miss. You have too many memory addresses mapping to the same cache lines all being used together at the same time. Scott Meyers had a very good talk which contained this information: < [VIDEO] >

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jimmy1 · 2018-04 · Recommendation

Here is a good visualization on access speeds for each level of cache, then main memory. Now take the main memory access time and essentially double it (for your state of the art SSD's today) and that's the access speed. [VIDEO]

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Sources

Video by NOKIA Technology Center Wrocław, played through YouTube.

Data and selection notes

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