[Beowulf] Odd SuperMicro power off issues

Lawrence Stewart larry.stewart at sicortex.com
Mon Dec 8 07:10:21 EST 2008


I agree with Alan, this sort of sounds like power.  Proving it might  
be difficult, but some ideas
are:

* Use a different PS on a unit you can make fail
* Reduce the power demand somehow: unplug memories, disks, whatever is  
unpluggable that you don't need

The ugliest idea I have is that fluent might have a pattern of power  
demand that is
resonant with something in the power system, so it causes cyclical  
voltage or current demand
that trips the power supply.  Proving that could be really hard.   
These are multicore processors
so does it depend on how many of them are running fluent and how many  
are doing something else?

-L

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