On Tue, Jan 10, 2012 at 7:17 AM, William Stein <wst...@gmail.com> wrote:

>
> On Jan 10, 2012 12:50 AM, "Dima Pasechnik" <dimp...@gmail.com> wrote:
> >
> >
> >
> > On Tuesday, 10 January 2012 03:06:14 UTC+8, William wrote:
> >>
> >> > coLinux looks promising. What does stop one from putting Sage on it
> >> > presently?
> >> >
> >> > Dima
> >>
> >> Nothing.  I've done it before several times.  I was hoping with my
> >> email to encourage you (meaning anybody reading this!) to try it.
> >
> >
> > on a 64-bit Windows 7 I have, I cannot install coLinux:
> > it aborts with a message saying it cannot run on a 64-bit system.
> > (and this is also according to Q27 in http://colinux.wikia.com/wiki/FAQ)
>
> Thanks, that is very useful to know, as 64-bit is finally becoming common
> for Windows, I think.
>

I'm pretty sure that most computers sold to the "general public" today will
have 64 bit Windows installed, and this has probably been true for a few
years. (Just browse the Best Buy website and you will see that most
standard laptops have at least 4 gigs of ram and come with Windows 7 Home
Premium 64 bit.) I suspect that new computers will probably only have 32
bit Windows installed either because they are cheap netbooks which come
with Windows 7 starter or because someone has specifically requested
something 32 bit for legacy compatibility reasons.

I've been puzzled for a while about why Ubuntu encourages the 32 bit
version as the recommended download. There used to be some problems with
flash on 64 bits, but I think those problems are pretty much taken care of
now, and I haven't come across any other software that I want to run that
has problems with 64 bit linux. (Not that I really _want_ to run flash.)

So I think that there should be a 64 bit version, and we should encourage
anyone who can use a 64 bit version to use the 64 bit version, and we
should look forward to the day, possibly only a few years away, when Sage
can drop support for 32 bit operating systems. (Though maybe this day is
more than a few years away, since ARM is lagging behind in adopting 64 bit,
and more and more people may be interested in running Sage on ARM as time
goes on.)

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