CPU Cache Effects - Sergey Slotin - Meeting C++ 2022

CPU Cache Effects - Sergey Slotin - Meeting C++ 2022
Slides: slides.meeting...
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Modern computer architectures have many properties that can impact software performance. While the compiler is generally good enough at "in-core" optimizations such as instruction selection and various loop optimizations, most memory acceleration techniques cannot work optimally without some help from the programmer. This talk draws a picture of what every C++ developer needs to know about modern memory systems to perform these kinds of optimizations by presenting a series of small code examples and benchmarking their performance - often producing surprising results - experimentally deriving key memory characteristics and highlighting different CPU cache effects.

[@zenjasolaja9527]

Exceptional presentation, well done Sergey.

[@chocolate_maned_wolf]

lovely; thank you!!

[@dementedchicken1]

Thanks for the fantastic presentation!

[@edubmf]

26:48 - six bytes is the sizeof int? surely 4

[@jeremywmurphy]

I just had the same question...

[@robrick9361]

Yeah its 4. He's pronunciation of numbers in english is off. Like he says 226 instead of 256 or 2^12 instead of 2^20.

[@MaksimVolkau]

amazing talk