this post was submitted on 29 Aug 2024
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I'm guessing you've already happened across this, but in case you haven't, here is an explanation of the the compilation flags thorium uses for it's chromium builds:
https://thorium.rocks/optimizations
It seems as good of a place to start as any.
I haven't spent a ton of time down this particular rabbit hole, but now I may have to.
How are they using gcc and clang at the same time?
Interesting question. I don't know. I haven't actually had a chance to dig in yet.
Let me know if you find out pls
@waz @soaska There are other reasons to be cautious about using AVX - older CPUs that support it are forcibly downclocked when the instructions are used so you'd better make sure that your vectorised loops are delivering enough benefits for the 10-20% penalty for all the rest of the code
https://stackoverflow.com/questions/35663635/why-do-processors-with-only-avx-out-perform-avx2-processors-for-many-simd-algori/44353690#44353690
https://stackoverflow.com/questions/56852812/simd-instructions-lowering-cpu-frequency
Ohh, cool. Thanks for the warning. This just got complicated enough that I am definitely going to have do go down this rabbit hole.