Support for 64bit Pentium?

Support for 64bit Pentium?

[Alessandro Baretta]

Shortly, most mainstream microprocessors will ship in 64 bit variants. I know 
that ocamlopt supports AMD64, but what about EM64T, or whatever the new Intel 
hype is called?

Alex


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Re: [Caml-list] Support for 64bit Pentium?

[David Brown]

On Wed, 2005-11-30 at 19:31 +0100, Alessandro Baretta wrote:
> Shortly, most mainstream microprocessors will ship in 64 bit variants. I know 
> that ocamlopt supports AMD64, but what about EM64T, or whatever the new Intel 
> hype is called?

They are identical, at least from a user-program perspective.  Intel
tries very hard to downplay this, since they've essentially reversed
positions, and have themselves cloned AMD's features.

Dave Brown

Re: [Caml-list] Support for 64bit Pentium?

[David Teller]

Haven't they actually licensed AMD's processor and renamed it ?

Cheers,
 David

On Wed, 2005-11-30 at 10:49 -0800, David Brown wrote:
> They are identical, at least from a user-program perspective.  Intel
> tries very hard to downplay this, since they've essentially reversed
> positions, and have themselves cloned AMD's features.
> 
> Dave Brown
> 
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Re: [Caml-list] Support for 64bit Pentium?

[Zoltan Podlovics]

David Teller wrote:
 > Haven't they actually licensed AMD's processor and renamed it ?

You should check this:
http://marc.theaimsgroup.com/?l=linux-kernel&m=107766481408468&w=2

Regards,
Zoltan

Re: [Caml-list] Support for 64bit Pentium?

[Brian Hurt]

On Wed, 30 Nov 2005, David Brown wrote:

> On Wed, 2005-11-30 at 19:31 +0100, Alessandro Baretta wrote:
>> Shortly, most mainstream microprocessors will ship in 64 bit variants. I know
>> that ocamlopt supports AMD64, but what about EM64T, or whatever the new Intel
>> hype is called?
>
> They are identical, at least from a user-program perspective.  Intel
> tries very hard to downplay this, since they've essentially reversed
> positions, and have themselves cloned AMD's features.

True story: Intel screwed up when it shipped it's first copies of the 
documentation describing EMT64 technology.  See, the 64-bit Pentiums only 
have 36 physical address lines, while the Opterons have 40 (this makes a 
difference in the total amount of real memory that they can address).  The 
first generation of EMT64 manuals Intel shipped out said the chips had 40 
physical address bits.

Hey, Intel- you didn't quite finish filing the serial numbers off there...

Seriously, if it works on one, it'll work on the other (barring SSE3 
requirements).

Brian