[j-nsp] 32-Bit JunOS on the 64-Bit Routing Engines

[Chris Adams]

Once upon a time, Keegan Holley <keegan.holley at sungard.com> said:
> On Aug 24, 2011, at 9:13 AM, Chris Adams <cmadams at hiwaay.net> wrote:
> > Well, that isn't entirely true.  Intel added the Physical Address
> > Extension to the Pentium Pro many years ago (and virtually everything
> > claiming to be i686 compatible has PAE).  PAE allows the OS kernel to
> > address up to 36 bits of RAM (64G), just not all at once.
> 
> I've never heard of this actually being used though.  Maybe I'm wrong though.  Most people just modified their code to support 64 bit and stopped there. I also haven't seen any boards RE's or regular Mobo's with 32 bit procs and support for more that the 4G of RAM.

A good number of 32-bit server motherboards supported PAE, and the Linux
kernel has supported it for years.  IIRC about the only program that
directly used PAE under Linux was Oracle (before 64 bit x86 platforms
were widely used).

-- 
Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.