I am having a weird failure that I haven't ran across before and is intermittent which makes it fun to track down.
Server:
Supermicro x10DRi BIOS 3.4a IPMI 3.93
Windows 2022 server, dedicated Hyper V host
x2 E5 2690 V4 14 core CPU's
8x 32GB RAM, 128GB per socket
The system crashed and rebooted by itself. Somehow only one CPU is showing up with 2 cores and 4 threads. L1/L2 cache are correct for 2 cores, L3 cache is the full 35MB for one CPU. What is really throwing me is all 256GB of RAM from both sockets shows up and I can see PCIe cards that are attached to separate sockets. Hardware Info and CPUz show 1 CPU with 2 cores, device manager shows all 56 E5 2690 V4 listings under processors. Intel processor diagnostics passes. The BIOS shows both CPU's and all cores enabled but when I restart the system sometimes I see both CPU's with all cores so it could be lucky timing when I look at the BIOS.
Has anyone ran across anything similar? I have a 2nd system with the same board and 2680 v4's to try and pinpoint the cause but the intermittent nature is going to be difficult to diagnosis.
Server:
Supermicro x10DRi BIOS 3.4a IPMI 3.93
Windows 2022 server, dedicated Hyper V host
x2 E5 2690 V4 14 core CPU's
8x 32GB RAM, 128GB per socket
The system crashed and rebooted by itself. Somehow only one CPU is showing up with 2 cores and 4 threads. L1/L2 cache are correct for 2 cores, L3 cache is the full 35MB for one CPU. What is really throwing me is all 256GB of RAM from both sockets shows up and I can see PCIe cards that are attached to separate sockets. Hardware Info and CPUz show 1 CPU with 2 cores, device manager shows all 56 E5 2690 V4 listings under processors. Intel processor diagnostics passes. The BIOS shows both CPU's and all cores enabled but when I restart the system sometimes I see both CPU's with all cores so it could be lucky timing when I look at the BIOS.
Has anyone ran across anything similar? I have a 2nd system with the same board and 2680 v4's to try and pinpoint the cause but the intermittent nature is going to be difficult to diagnosis.