Artesyn MaxCore MC1600, Инструкция по установке и эксплуатации, Страница: 107 / 118

Software Configuration
MC1600 Extreme Edge Server Installation and Use (6806870A02A) 105
temperature makes the chassis-wide aggregated temperature invalid and as a result, all fans
will run at full speed. To avoid this from happening, the application or service shall use the
Set
Aggregated Temperature Sensor
command to disable the sensor gracefully before it
exits or stops.
The aggregated thermal status is tabevaluated in a 0 to 63 scale, where 0 means no thermal
concerns and cooling fans may be turned off or running at their minimum speed, 56 means the
cooling fans should be running at full speed to avoid the further temperature rising, and 63
indicates permanent thermal damage may happen. Typically, a temperature between the IPMI
temperature sensor upper non-critical threshold and the upper critical threshold is linearly
mapped to 0 to 56, and a temperature between the upper critical threshold and the upper non-
recoverable threshold is linearly mapped to 56 to 63. All temperatures below the upper non-
critical threshold are mapped to 0, and all temperatures over the upper non-recoverable are
mapped to 63.
Following is a simple pseudo code example showing how to implement the PCIe card thermal
monitoring.
for t_sensor in all_readable_temperature_sensors_on_the_pcie_card
temperature=read(t_sensor)
if temperature < non-critical[t_sensor]
aggtemp[t_sensor] = 0
else if temperature < critical[t_sensor]
aggtemp[t_sensor] = (56 - 0) * (temperature - non-critical[t_sensor])
/ (critical[t_sensor] - non-critical[t_sensor])
else if temperature < non-recoverable[t_sensor]
aggtemp[t_sensor] = (63 - 56) * (temperature - critical[t_sensor]) /
(non-recoverable[t_sensor] - critical[t_sensor])
else
aggtemp[t_sensor] = 63
set_aggregated_temperature_sensor(MAX(aggtemp))
sleep 1second and repeat forever
exit:
set_aggregated_temperature_sensor(disable)