Re: Getting Started
>> Recently we had two of ours drop the CPU core voltage by 10% (from 3.3V
>> to 3.0V), which caused hardware hangs after a period of operation
>> ranging from a few minutes to a few hours.
>
> Really? Because that sounds like it is well within the published
> tolerances...
Well, we verified the 10% voltage drop using the hardware monitor of the
setup (first time we use the VGA console in a while), so the CPU was idle
then. If you keep it idle it won't hang, only if you load it with an
intensive (99% CPU) job. It also only really heats up in such conditions,
so the load on the power supply is only high when the CPU is loaded. I
guess that the voltages drop even more when you load the node, hence the
hang. But it must be said that we didn't really measure that.
Cheers,
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Jorge L. deLyra, Associate Professor of Physics
The University of Sao Paulo, IFUSP-DFMA
For more information: finger delyra@latt.if.usp.br
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