EPYC 7601 and Linux, performance evolution last 2 years

[Panos]

Phoronix made a pretty detailed article with benchmarks, using Ubuntu
17.04,
19.04,
19.04 with Kernel 5.2 (spectre mitigations included)
19.04 with Kernel 5.2 + NoSpec (spectre mitigations excluded).

https://www.phoronix.com/scan.php?page=article&item=epyc-since-launch&num=1

The summary of the results are pretty impressive showing an improving performance of 11% on EPYC 7601 using newest Linux, compared to the one 2 years ago, when at the same time, similar Intel systems got 18% performance reduction due to the patching of security holes.

 

[voidshatter]

People actually run non-LTS versions of Ubuntu for production and scientific computing?

And where are the numbers for Linpack?

 

[Destination]

That's good news, any similar profiles done under windows?

 

[Panos]

That's good news, any similar profiles done under windows?

There are no tests with the new scheduler out yet. Even the latest benchmarks run by AMD are with pre 1903 version.
However picking out a paragraph from here

https://www.tomshardware.com/news/amd-ryzen-3950x-vs-intel-i9-9980xe-geekbench,39640.html

At E3 this week, AMD announced its high-end consumer CPU for the new Ryzen 3000 series. It said that its own benchmarks show that the 3950X beats Intel’s 9960X, even without Intel’s chips being patched for the latest MDS flaws, which can reduce the performance of Intel’s chips by 10-20%, according to some third-party benchmarks.

Apparently, AMD didn’t test the new chip on the latest Windows 10 1903, which brings a new scheduler that better handles the intercommunication between the Ryzen CPU Core Complexes (CCXs). Some users have claimed it has increased their CPU’s performance by over 10%, although it’s likely that some use will see a much bigger improvement than others.