On Thu, Jul 9, 2009 at 1:42 AM, Dr. David Kirkby<david.kir...@onetel.net> wrote:
>
> Minh Nguyen wrote:
>> Hi,
>>
>> On Thu, Jul 9, 2009 at 3:35 PM, DigDug_the_2nd<dugthemath...@gmail.com> 
>> wrote:
>>>     I installed Sage binary under WINDOWs Vista using the VM Player
>>> as described in the Installation Manual . . . so far so good . . . but
>>> I'm a little unsure what the VM Player is actually doing. Sage is not
>>> installed in the ordinary sense that a program is usually
>>> installed . . . right? What I'd really like to do is put the Sage_ROOT
>>> on the PATH and then access all the packages in Sage and the
>>> additional ones added to it. Can I do this by pointing the PATH to the
>>> folder that contains the VM Player files that I downloaded as the
>>> binary distribution for WINDOWs?
>>
>> Short answer: No.
>>
>> Longer answer: Currently the best way to run/use Sage under Windows is
>> to use the VMware image. This essentially is an Ubuntu Linux image
>> that is loaded using the WMware player. That means that the compiled
>> version of Sage in that VMware image has been compiled for a Linux
>> system, where the binary format is different from Windows. It's like
>> you can't execute a Linux binary under Windows and vice versa (unless
>> you use an emulator or a virtual machine).
>
>
> Though I use Windows as little as possible, does the VMware image slow
> if there is not hardware support for some instructions?

Yes.

> I believe there are some instructions in modern processors which make
> running one OS inside another quite practical, which should be good news
> for users of modern machines.

Yes, it's called "VTX".  It's amazing.  Even without it, vmware is quite fast.

> However, on my Sony VAIO laptop, Sony in their infinite wisdom has
> written the BIOS so they can't be used. So for me, running XP inside
> OpenSolaris would be slow, despite the fact the processor would support
> it. It has been suggested that the BIOS is an AMD one, and I could
> download a BIOS from AMD not Sony, but that is a bit risky.
>
> If there are issues like this, it would be worth mentionnig them on the
> Sage page, as it could give the impressions Sage is a lot slower than it
> needs to be.
>
> It might in some cases be possible for users to enable these
> instructions in the BIOS, but Sony for whatever reason have decided not
> to - perhaps they get Vista at a lower price from Microsoft if they
> agree to disable the hardware support that makes running on OS inside
> another more difficult.

I'm so glad Blair Sutton and Jason Moxham have been working hard on
porting Sage to windows.  I hope others (including me) will find time
soon to help.  It's really easy to distribute work.

William

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