Iray, and 3delight, not using all cpu cores(cpu only rendering)(solved)

DrunkMonkeyProductions

I'm probably just missing something, but for some reason iray, and 3delight, are only able to use half my total available cores.

System: HP DL380 gen 9, dual E5-2640 v3(8c/[email protected]),

O.S. server 2019.

Studio version:4.22.0.16

My other servers show and use all cores, upto 40(dual e5 2680 v2, 10c/[email protected]), and benchmarking software(cinebench) uses all cores.

Hyperthreading is enabled.

Update

If i disable hyperthreading, the availble core count, in studio, drops to 8, which is what each cpu has, so it seems as if it's only using a single cpu, or just isn't recognizing the other cpu.

However, it seems to be using both cpus, as task manger show 100% utilitization at different points in the render process across all 32 logical cores.

Tested 3delight, and it's also showing the same behavior, using only one processor or just half the available cores.

SOLUTION

Switched power managment to OS control in bios, and it allowed me to change the cpu load limit to max(32).

After this i switched back to maximum performance in bios and it held the settings.