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

[Dillon Campbell Compton]

Josiah -

Do you want us to put a hold on starting new runs until you've got it switched
over?

//Dillon

Quoting "Wm. Josiah Erikson" <wjerikson at hampshire.edu>:

> 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
> >>
> >> _______________________________________________
> >> Helga mailing list
> >> Helga at lists.hampshire.edu
> >> http://lists.hampshire.edu/mailman/listinfo/helga
> >
> > _______________________________________________
> > Helga mailing list
> > Helga at lists.hampshire.edu
> > http://lists.hampshire.edu/mailman/listinfo/helga
>
> --
> Wm. Josiah Erikson
> Computing Support
> School of Cognitive Science
> Hampshire College
> Amherst, MA 01002
> (413) 559-6091
>
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