Idea - Replace CPU's of UCS* Nodes

[rbo]

Right now the ucs* nodes are not RHEL10 capable

Current cpu: 4x Intel(R) Xeon(R) CPU E7-4890 v2 @ 2.80GHz ~ 60 Cores ~ 120 Threads => Ivy Bridge => Only x86-64 ABI compatibility levels baseline & v2 [1] (Socket FCLGA2011)

Possible CPU's [2]

UCS-CPU-E74809E E7-4809 v4 2.1 115 20 8 6.4 1866
UCS-CPU-E74820E E7-4820 v4 2.0 115 25 10 6.4 1866
UCS-CPU-E74830E E7-4830 v4 2.0 115 35 14 8.0 1866
UCS-CPU-E74850E E7-4850 v4 2.1 115 40 16 8.0 1866 => each ~ 12 Euro
UCS-CPU-E78860E E7-8860 v4 2.2 140 45 18 9.6 1866
UCS-CPU-E78867E E7-8867 v4 2.4 165 45 18 9.6 1866
UCS-CPU-E78870E E7-8870 v4 2.1 140 50 20 9.6 1866 => each ~ 150 Euro
UCS-CPU-E78880E E7-8880 v4 2.2 150 55 22 9.6 1866 => each ~ 30 Euro
UCS-CPU-E78890E E7-8890 v4 2.2 165 60 24 9.6 1866 => each ~ 40 Euro
UCS-CPU-E78891E E7-8891 v4 2.8 165 60 10 9.6 1866
UCS-CPU-E78893E E7-8893 v4 3.2 140 60 4 9.6 1866
UCS-CPU-E78894E E7-8894 v4 2.4 165 60 24 9.6 1866 => each ~ 350 Euro

[1] https://qemu-project.gitlab.io/qemu/system/qemu-cpu-models.html
[2] https://www.cisco.com/c/dam/en/us/products/collateral/servers-unified-computing/ucs-c-series-rack-servers/c460m4_specsheet.pdf

[rbo]

Looks like it's not possible because we have DDR3 memory :-/

According to intel page for example E7-8894 v4 it works with DDR was well..

https://www.intel.de/content/www/de/de/products/sku/96900/intel-xeon-processor-e78894-v4-60m-cache-2-40-ghz/specifications.html

[DanielFroehlich]

Lets wait how painful the ISA V2 topic is actually going to be. I think there are plans being developed to support OpenShift on RHEL9 actually until RHEL9 EOLs. So we might be good. As we do have V3 hw available, we can use RHEL10 with those, and keep the UCS for the not so picky workloads.

[rbo]

More and more workload will be based on RHEL10 base images, and these will fail on RHEL9 with old CPUs as well. But yes, it's long/mid-term problem.

But I could not refuse to buy 4x E7-4850 v4 for 30 Euro in total. To try it out in one of the UCS servers. Let's see..

With the IBM Fusion #315 we have to remove/power a bunch of the UCS or the BladeCenter anyway.