[Clusterusers] Re: [HELGA] RAM and swap and stuff

[Wm. Josiah Erikson]

If I didn't think it was going to work, I wouldn't implement it.
If I were right all the time, I'd be... uh.... someone else :)

There's a breve running on compute-0-1 anyway, so I can't do it now, but 
I can do it from home, whenever. I could do all the nodes EXCEPT 
compute-0-1 :)

Oh look, compute-0-19 crashed... it'll be the new way when it comes back 
up :)

    -Josiah



Chris Perry wrote:
>
> This sounds great. Do you need us to put a hold on renders or 
> something? I'd love to see this in place sooner rather than later, but 
> I also wonder about making a change on Friday afternoon. Do you 
> foresee any risks in this?
>
> - chris
>
> On Nov 30, 2007, at 2:18 PM, Wm. Josiah Erikson wrote:
>
>> Hey all,
>>    I have re-configured the cluster... but I have to reinstall it for 
>> the second part to take effect, and restart alfserver for the first 
>> part to take effect (for maya jobs). Here're the changes:
>>
>>    -no shell can allocate more than 4.2GB of RAM (I believe this 
>> includes anything launched from a single alfserver, but I'm not sure 
>> about this)
>>    -swap has been increased to 5GB (from 2GB)
>>
>>    This should prevent nodes from running out of RAM and crashing.
>>
>>    I could also tune certain kernel parameters to keep the kernel 
>> from overcommitting RAM, but I don't want to do it until the 5GB of 
>> swap per node is in place
>>
>>    I was going to do it just now during that break, but the cluster 
>> seems to be full again, so I'll wait until later.
>>    I'm off....
>>
>>    -Josiah
>>
>> -- 
>> Wm. Josiah Erikson
>> Computing Support
>> School of Cognitive Science
>> Hampshire College
>> Amherst, MA 01002
>> (413) 559-6091
>>
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>> Helga at lists.hampshire.edu
>> http://lists.hampshire.edu/mailman/listinfo/helga
>
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-- 
Wm. Josiah Erikson
Computing Support
School of Cognitive Science
Hampshire College
Amherst, MA 01002
(413) 559-6091