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Hi, just unmounted the cpu coolers (at first view clean and not dry thermal paste)
Cleanded everything and re-applyed thermal paste.

Temperatures under full load the same.

No crash today.

For fun, add 'cat /sys/devices/system/cpu/cpu0/thermal_throttle/package_throttle_count'

returns 0

The system as ran 12hours under full load without issues

NVME temperatures seem fine

Thanks CwF

I created a small script to log the CPU and NVME disks temperatures every minute.
Here is an extract when running calculations:

2024-09-04 22:37:55, CPU0 Temp: +89.0°C, CPU1 Temp: +90.0°C, nvme-pci-1500: +27.9°C, nvme-pci-9900: +26.9°C, CPU0 Load: 100.00%, CPU1 Load: 100.00%
2024-09-04 22:39:05, CPU0 Temp: +90.0°C, CPU1 Temp: +89.0°C, nvme-pci-1500: +27.9°C, nvme-pci-9900: +26.9°C, CPU0 Load: 100.00%, CPU1 Load: 100.00%
2024-09-04 22:40:15, CPU0 Temp: +89.0°C, CPU1 Temp: +88.0°C ...

I solved the memtest86 issues and ran the whole series of tests. No errors detected.

So I opened the computer to check for issues. All fans are running correctly, everything seems connected correctly.
I moved the pc into a more opened area for better cooling.

It ran for a few hours but then crashed again.

I haven't got thermal paste with me right now so I wait before removing the twi heatsinks.

Any ideas how can I narrow my search either a temerature monitoring or somtehnig elses?

Thanks

ok thanks I suspect also temperature issues.
I will redo that.

Solved memtest86 issues and is currently running.

Hello everyone,

As this is my first post do not hesitate to mak me udpate or move if it is not in the correct sub-topic.
I consider myself as a beginner on Debian.

I setup a server for CFD calculations for our small company with debian 12 on it.
It has a dual Xeon CPU and some RAM on it, it is a second hand hardware.

When I first setup the server a month ago, it seemed as a RAM memory was not seen in the bios, I switched between 2 RAM memories and it worked, so I setup memtest86 in GRUB and ...