[BALUG-Talk] Accessing 128GB of RAM

[Quinn]

You can run 32 bit apps on a 64 bit kernel, in fact you can have a
whole 32 bit userland without any trouble that I'm aware of, so even
if your apps are solidly 32-bit you can still have a 64-bit kernel,
your 32-bit apps will just be limited to the 4GB (or is it 3?) each,
but they would anyway

On Feb 8, 2008 1:00 PM, Raj Kumar Gurung <grg350 at gmail.com> wrote:
> Yes, We have to run a 32 Bit kernel, since some of our apps don't support
> 64Bit. And in the case if we run  32bit, is it possible to address the 128GB
> Memory?
>
> Any virtualization techniques or others...I am open to suggestions.
>
> -
>
>
>
> On Feb 8, 2008 12:21 PM, Jeffrey Siegal <jbs at quiotix.com> wrote:
> >
> > Opteron is a 64 bit processor.  Can you even boot a 32 bit kernel on one?
> Not sure, but you don't want to.  Use a 64 bit kernel.  You can still run 32
> bit apps if needed.
> >
> >
> >
> >
> >
> >
> > On 2008-02-08, at 12:19 , Raj Kumar Gurung wrote:
> >
> > These are AMD Opteron Quadcores.
> >
> >
> >
> > On Feb 8, 2008 10:46 AM, Jeffrey Siegal <jbs at quiotix.com> wrote:
> >
> > > What kind of CPUs are these?  If they're Intel/AMD, then a quad core
> > > processor supports 64 bit, and a 32 bit processor can only support (I
> > > think) up to 64 GB using PAE, but that can be quite slow.  You are
> > > much better off running in 64 bit mode.  For other types of CPUs the
> > > issues may be different.
> > >
> > >
> > >
> > >
> > > On 2008-02-08, at 10:40 , Raj Kumar Gurung wrote:
> > >
> > > >
> > > > I am in process of assembling a machine with 4 quadcore(32bit)
> > > > processors and 128Gigs of RAM. I wonder, if it is possible to
> > > > address the 128G RAM using the 32 bit processors. FYI, I will be
> > > > running Debian.
> > > >
> > > > Any ideas, suggestion would be appreciated
> > > >
> > > > thanks,
> > > >
> > > >
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> >                http://www.grg350.com
> > "Nothing comes easy that is done well."  -Harry F. Banks
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