Server

Huawei RH2288H v3

Manually setting FAN speed

Usage: ipmcset -d fanmode -v <mode> [timeout]
Modes are:
    0    auto regulate fan speed, without parameter [timeout]
    1    manual regulate fan speed
         without parameter [timeout], default timeout(30 seconds)
         with parameter [timeout], timeout range <0-100000000>,(0 means max timeout)

Usage: ipmcset -d fanlevel -v <value> [fanid]
Note :
      1.Set fan speed level for all fans, without parameter [fanid]
      2.Set fan speed level for specific fan, with parameter [fanid]
       [fanid] range <1-4>

ipmcset -d fanmode -v 1 0
ipmcset -d fanlevel -v 26

Manually setting the fan speed to 26% is sufficient in a controlled environment (22°C) and without GPUs.

Fujitsu Eternus LT20 S2

Password Recovery

If you lost your password for Administartor or User you may not reset the password with restoring factory defaults, as network and user settings stay in place.

You can login with Service User and the password "F.CE".

NVIDIA Tesla GPU - Power Brake

nvidia-smi -q | grep HW
        HW Slowdown                       : Active
            HW Thermal Slowdown           : Not Active
            HW Power Brake Slowdown       : Active

Your server vendor may block GPUs not on a HCL. HW Power Brake Slowdown on NVIDIA Tesla GPUs is documented with a fixed slowdown of 50% in performance and power limit (see Data Sheet).

You can prevent the system from activating the "HW Power Brake" by blocking PCIe Pin B30. Pin B30 has been a reserved pin for long time. This has changed to Pin B30 being a PWRBRK for emergency power reduction.

image.png

Source: https://pcisig.com/specifications/pciexpress/

Tape or use a waterproof marker to block Pin B30. B30 is on the cooler side 30th Pin.

nvidia-smi -q | grep HW
       HW Slowdown                       : Not Active
            HW Thermal Slowdown           : Not Active
            HW Power Brake Slowdown       : Not Active

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