[GAP Forum] Allocating 8G memory

[Attila Egri-Nagy]

Yes, I actually made a stupid mistake. I installed Ubuntu Linux routinely,
which means using the i386 distribution, then started to tweak the kernel
and the compiler.
Whereas after installing the 64bit Ubuntu (the amd64 tag is slightly
misleading when you have an Intel processor) standard GAP install/compile
gives the required 64bit capability.

Attila

On Tue, Oct 7, 2008 at 8:25 PM, Steve Linton <sal at cs.st-andrews.ac.uk>wrote:

> If you compile GAP in 64 bit mode (check the value of
> GAPInfo.BytesPerVariable it should be 8)
>
> then there should be no problem allocated 8GB of memory.
>
> how to compile in 64 bit mode and whether it is the default, depend on your
> C
> compiler setup.
>
>        Steve
>
> On Tue, 7 Oct 2008 20:05:07 +0100
> "Attila Egri-Nagy" <A.Egri-Nagy at herts.ac.uk> wrote:
>
> > Hello,
> >
> > I wonder what is the current situation regarding the allocation of big
> > amount of memory for GAP? We have 8GB and Xeon 64bit processors, but
> there
> > seem to be a limit around 2GB. We run GAP on Ubuntu and the linux kernel
> is
> > compiled to handle the 8GB.
> >
> > Any ideas?
> >
> > Thanks!
> > Attila
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>
>
> --
> Steve Linton    School of Computer Science  &
>      Centre for Interdisciplinary Research in Computational Algebra
>             University of St Andrews    Tel   +44 (1334) 463269
> http://www.cs.st-and.ac.uk/~sal <http://www.cs.st-and.ac.uk/%7Esal>
>    Fax   +44 (1334) 463278
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