On Sunday 24 May 2015 02:12:34 Joseph wrote:
> On 05/23/15 20:52, Zhu Sha Zang wrote:
> >On 05/23/2015 06:53 PM, Joseph wrote:
> >> On 05/23/15 18:08, Zhu Sha Zang wrote:
> >>> On 05/23/2015 05:24 PM, Joseph wrote:
> >>>> I have a box in a remote location (8-core CPU) and it turn itself off
> >>>> during compiling
> >>>> 
> >>>> The box it connected to UPS.  Is it power supply?
> >>> 
> >>> Maybe. I have a problem like that when using high processing simulation
> >>> with nvidia-cuda and the power supply protection was unable to keep a
> >>> safe energy level then the system goes off.
> >>> 
> >>> But, if the failure happens during compilation time can be a heat
> >>> problem. Install lm_sensors and use something like that: "watch -n 1
> >>> sensors".
> >>> 
> >>> If not, if the temperature stay at safe levels, maybe you have a RAM
> >>> corruption. In this case, you'll need to use memtest86++ to check.
> >>> 
> >>> Good Luck
> >> 
> >> I tried to read the lm-sensors again and the compupter turn crash with
> >> the readings:
> >> 
> >> fan1:           0 RPM  (min =   10 RPM)  ALARM
> >> fan2:           0 RPM  (min =    0 RPM)
> >> fan3:           0 RPM  (min =    0 RPM)
> >> fan5:           0 RPM  (min =    0 RPM)
> >> temp1:        +47.0°C  (low  = +127.0°C, high = +127.0°C)  sensor =
> >> thermistor
> >> temp2:       +106.0°C  (low  = +127.0°C, high = +70.0°C)  sensor =
> >> thermal diode
> >> temp3:       +106.0°C  (low  = +127.0°C, high = +127.0°C)  sensor =
> >> thermistor
> >> cpu0_vid:    +1.250 V
> >> 
> >> I'm suspecting it is power supply.
> >
> >Hey, did you run "sensors-detect" and "/etc/init.d/lm_sensors" as root
> >before use "sensors"?
> >
> >As was said, maybe you're using wrong kernel modules.
> 
> I went to pickup the remote box and look at it; the CPU fan stop working. 
> The CPU heat sink is big so in idle mode it could keep up with cooling it
> but under heavy load "compiling anything" the CPU was overheating.

Ha!  So the fan speeds showing zero was true.  :-)

Often they start rattling before they fail.  I found that peeling off the self 
adhesive label in the middle and applying a single drop of thin oil on the 
bearing restores them to rude health.  I have one here which is still running 
quietly for five years since my intervention with an oil can.

-- 
Regards,
Mick