AMD Ryzen 9 5950X + GCC 11 Compiler Benchmarks At Varying Optimization Levels

[f0rmat]

Very impressive.

When I am finally able to upgrade, those numbers make me almost want to switch to Gentoo just to compare performance differences.

[Paradigm Shifter]

Very impressive.

When I am finally able to upgrade, those numbers make me almost want to switch to Gentoo just to compare performance differences.

I'd love to have the time to do some serious benchmarking for work purposes between, say, CentOS/RedHat (which everyone in my field seems to favour), Ubuntu, Debian, Gentoo and Arch. I tinker around in Gentoo on some SBCs at home, but it would be very interesting to see what sort of impact heavily optimised executables will have on my work, where even shaving off 1-2% would mean hours saved overall per year...

Of course, to really make it worthwhile, I'd need to do it on at least a dozen AMD CPUs and another dozen Intel CPUs...

[mbar]

Very impressive.

When I am finally able to upgrade, those numbers make me almost want to switch to Gentoo just to compare performance differences.

I did it, I have 3700X and in 2020 I returned to Gentoo as my main desktop distro after some years on Debian (which I still use on my home server and various laptops).

[lowflyer]

Side question: can somebody please elaborate on the difference between the `-march` option and the `-maech` option?

[f0rmat]

I did it, I have 3700X and in 2020 I returned to Gentoo as my main desktop distro after some years on Debian (which I still use on my home server and various laptops).

What was the performance increase like - at least from your perspective? (I realize that you may not have done comprehensive benchmarks.)

[carewolf]

Wow, you've finally listened and produced some really interesting benchmark results of useful compile options

All that was missing was -march=native

That would be the same as -march=znver3. Native is nothing extra just automatic detection of the right march level.

[carewolf]

Side question: can somebody please elaborate on the difference between the `-march` option and the `-maech` option?

In case you are not being sarcastic: e and r are right next to each other on a qwerty keyboard

[CochainComplex]

Side question: can somebody please elaborate on the difference between the `-march` option and the `-maech` option?

march = Machine ARCHitecture
maech = Machine Architecture ECHelon

the later one enables some NSA, CIA ...etc specific magic sauce

In case you are not being sarcastic: e and r are right next to each other on a qwerty keyboard

thats what they want you to believe

[oleid]

In case you are not being sarcastic: e and r are right next to each other on a qwerty keyboard

It would seem graphs are labeled manually, not from C(XX)FLAGS.

[Setif]

Finally, some benchmarks with "-Ofast -flto".