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PC speed gains erased by modern software
(hackaday.com)
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this post was submitted on 02 Jul 2023
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So what I want to know is why do we still have programs that run on a single core when nearly every Windows PC out there is running a multi-core processor?
What are we missing to have the OS adapt any program to take advantage of the hardware?
Multi-threaded programming is hard. You can't just write some code and expect it to work across 4 cores, you need to know what to parallelise and how to do it. If you think normal bugs are hard to fix, just wait until you have a calculation that gives a different answer each time you run it thanks to race conditions.