Linux 6.12 To Linux 6.18 LTS Upgrade Offers Worthwhile Benefits For 5th Gen AMD EPYC
With the RELION HPC benchmark there was a nice speed-up moving to the latter Linux 6.12 LTS point release or Linux 6.18 LTS. With Linux 6.19 the performance is regressed compared to v6.18 and back around the level of v6.12. As mentioned there have been some scheduler regressions in Linux 6.19 that will hopefully be fixed before the February stable release.
Somce nice wins on Linux 6.18+ for the Incompact3D HPC benchmark.
The NWChem computational chemistry software was showing some slightly better results with the newer kernel versions compared to the original Linux 6.12 LTS last year.
The easyWave tsunami simulation code was showing some nice results with Linux 6.18 LTS but rather appalling results out of Linux 6.19 Git... Far worse performance on Linux 6.19 Git while also the CPU power consumption was higher than on 6.18 and prior. Definitely some Linux 6.19 kernel regressions outstanding at large. I haven't looked closely at the easyWave data yet to see if it bisects back to the scheduler regressions that impacted some of the other workloads on Linux 6.19.