Author Topic: Temperatures and rotational speed of fans  (Read 350 times)

DKnoto

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Temperatures and rotational speed of fans
« on: September 28, 2022, 07:55:05 am »
I have a bit of a weird situation with the temperature and speed of the fans in my Talos II:

https://www.dropbox.com/s/iyzo0dllnmclwtx/Talos-II-Sensors-2022-09-28.png?dl=0

Should the control system not increase the speed to lower the temperature on this one sensor?
Desktop: Talos II T2P9S01 REV 1.01 | IBM Power 9/18c DD2.3, 02CY646 | AMD Radeon Pro WX7100 | 64GB RAM | SSD 1TB

ejfluhr

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Re: Temperatures and rotational speed of fans
« Reply #1 on: October 07, 2022, 12:59:25 pm »
The processor OCC firmware can call for fan speed increases if on-die Tj rise.

Where does that "Temperature Pcie" come from?   Presuming it is from PCIe card(s), it would seem sensible that the BMC should monitor and adjust accordingly.   Hard to imagine there is such a glaring bug in the BMC firmware, but worse has happened I guess.

Maybe Fan5 is supposed to cool the PCIe cards, but isn't working?

« Last Edit: October 07, 2022, 01:01:18 pm by ejfluhr »

DKnoto

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Re: Temperatures and rotational speed of fans
« Reply #2 on: October 08, 2022, 05:23:40 am »
At the moment I have 5 140 mm NOCTUA NF-A14 PWM fans. Three do the blowing
from the front, and 2 do the exhaust behind and above the CPU. The 2 fans from the
front I have connected to one slot.

"Pcie temperature" may be related to SSD temperature:

Code: [Select]
# smartctl -a /dev/nvme0 | grep Temp
Warning  Comp. Temp. Threshold:     82 Celsius
Critical Comp. Temp. Threshold:     85 Celsius
Temperature:                        45 Celsius
Warning  Comp. Temperature Time:    0
Critical Comp. Temperature Time:    0
Temperature Sensor 1:               45 Celsius
Temperature Sensor 2:               51 Celsius
Desktop: Talos II T2P9S01 REV 1.01 | IBM Power 9/18c DD2.3, 02CY646 | AMD Radeon Pro WX7100 | 64GB RAM | SSD 1TB

vikings.thum

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Re: Temperatures and rotational speed of fans
« Reply #3 on: October 11, 2022, 06:22:30 am »
You could check the allowed operating temperatures for your device with the manufacturer. For all PCIe adapters I can think of setting a warning temperature of 45 degrees doesn't seem to be useful.
Many NVMes have an operating temp of up to 70 degrees. While I wouldn't want to operate at the maximum I wouldn't worry about having 50 degrees. If I would, I would add a heat sink and/or improve the air flow situation.
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