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On Mon, Nov 05, 2007 at 04:43:44PM +0100, Oliver Keeble wrote:
> Hi,
>
> In principle 32 bit apps should run fine on a x86_64 platform, but in
> practise there are problems if the app uses compiled extensions to
> interpreted languages - as soon as your 64bit python interpreter tries
> to link a 32bit extension it will fail. I don't know if any of our
> services actually try to do this...
>
> By the way, what hardware do you have which requires a 64bit OS?
Practically any hardware with 4 GB memory (SLC hugemem extension for 32 bit kernel
was unstable on our machines) and we have plane to buy quadcores + 8GB RAM
and that you cannot address on 32bit (or at least I don't know about any
way painfull or not)
Our WN machines : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+; 2GB RAM
(plan is to extend it to 4 GB)
Intel(R) Core(TM)2 CPU 6600; 4GB are in slots but due to
32bit OS (no hugemem due to unstability) only 2,9GB is
visible to system
V.
>
> Oliver.
>
> Oliver Keeble Information Technology Department
> [log in to unmask] CERN
> +41 22 76 72360 CH-1211 Geneva 23
>
>
> Vladimir Fekete wrote:
> > Hi *,
> >
> > we have to shift at our site to full 64bit OSes (due to hardware).
> > I'd like to ask you few questions about it (because we have no experience
> > and there were a lot 64bit related topics in mailing list recently):
> >
> > 1) Are there any installation/configuration problems ? (as was gLite 3.0 WN on
> > SLC4.4 in few months ago - package dependency problems, python22 vs 23...)
> >
> > 2) Are services CE, SE (classic, dCache), RGMA, UI, WN, well supported (in
> > sense of not very painfull installation and configuration)?
> >
> > 3) I found this info for glite 3.1 WN 64 bit on net:
> > http://wiki.egee-see.org/index.php/SL4_WN_glite-3.1_64bit
> > 3.1) Is it functional ?
> > 3.2) Are such excellent guides for other services somewhere available? (CE, SE,
> > MON)?
> >
> > Many many thanks!
> >
> > Cheers,
> >
> > Vladimir Fekete
> > [log in to unmask]
>
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