[Clusterusers] Wacky brownout

Wm. Josiah Erikson wjerikson at hampshire.edu
Wed Dec 4 09:39:35 EST 2013


     Yep, I think that's right. I have visually inspected the A/C unit 
and nothing is obviously exploded, and it is still functioning, but if 
it happens again I'll give Mark a call.
     -Josiah

On 12/3/13 4:26 PM, Lee Spector wrote:
> Wow... I think I saw that dip in power if it was around 1:30...
>
> Has someone taken a look on the roof?!
>
>   -Lee
>
> On Dec 3, 2013, at 3:48 PM, Wm. Josiah Erikson wrote:
>
>> There was a loud bang from the roof (I think the A/C unit, but unsure), and then we had a voltage drop or spike or something, and even though everything is on UPS, a random smattering of cluster nodes on different UPSes rebooted. That obviously shouldn't happen - I guess maybe those UPSes aren't as awesome as they should be... but it's the ones that I thought were the good ones that "failed" in this situation. Anyway, Tom, that's why some of your runs crashed - you should be able to restart them safely.
>>
>> -- 
>> Wm. Josiah Erikson
>> Assistant Director of IT, Infrastructure Group
>> System Administrator, School of CS
>> Hampshire College
>> Amherst, MA 01002
>> (413) 559-6091
>>
>> _______________________________________________
>> Clusterusers mailing list
>> Clusterusers at lists.hampshire.edu
>> https://lists.hampshire.edu/mailman/listinfo/clusterusers
> --
> Lee Spector, Professor of Computer Science
> Cognitive Science, Hampshire College
> 893 West Street, Amherst, MA 01002-3359
> lspector at hampshire.edu, http://hampshire.edu/lspector/
> Phone: 413-559-5352, Fax: 413-559-5438
>
> _______________________________________________
> Clusterusers mailing list
> Clusterusers at lists.hampshire.edu
> https://lists.hampshire.edu/mailman/listinfo/clusterusers

-- 
Wm. Josiah Erikson
Assistant Director of IT, Infrastructure Group
System Administrator, School of CS
Hampshire College
Amherst, MA 01002
(413) 559-6091



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