[THIN] Re: Opteron processors
- From: "Steve Greenberg" <steveg@xxxxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Wed, 21 Apr 2004 08:40:19 -0700
I accept that theoretically this is possible, I am just very skeptical =
that
it could actually work in practise and in standard production =
environments.
What is the status of 64 bit Windows? Would it be a simple enough test =
to
get our hands on WIN 64 code and try running 32bit apps on 64 bit =
Terminal
services?
Steve Greenberg
Thin Client Computing
34522 N. Scottsdale Rd. suite D8453
Scottsdale, AZ 85262
(602) 432-8649
(602) 296-0411 fax=20
steveg@xxxxxxxxxxxxxx
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On =
Behalf
Of Brian Madden
Sent: Wednesday, April 21, 2004 4:26 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Opteron processors
Yes, I am definitely saying that you can run a 64-bit OS with 32-bit =
apps on
an Opteron. This is why the Opteron is so sweet!
It basically has three modes of operation:
1.) 32-bit OS (or 16-bit or whatever) You can install Win95 on an =
Opteron.
Or DOS.
2.) 64-bit OS with 32-bit apps. This is called "legacy" mode.
3.) 64-bit OS with 64-bit apps. For now the only 64/64 combinations are
things like 64-bit SUSE with 64-bit Unreal Tournament server... stuff =
like
that.
But, you totally, absolutely, 100% can run 32-bit apps on a 64-bit OS on =
an
Opteron will no performance loss. The question is whether MetaFrame will
install as an "app" and work fine being 32-bit or whether it's tied too
tightly into the OS, and therefore must be 64-bit.
Brian
Brian Madden
brian@xxxxxxxxxxxxxxx
+1.202.302.3657
Visit www.brianmadden.com for in-depth Citrix, Terminal Server, and
server-based computing news and analysis, white papers, downloadable =
videos,
and product reviews.
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On =
Behalf
Of Andrew Rogers
Sent: Wednesday, April 21, 2004 2:58 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Opteron processors
I might be missing something here, but you seem to be saying that you =
can
r=3D3D un a 64bit OS and also run 32bit apps in it.. I was under the
impression 64=3D3D bit OS means everything must be 64bit? (Hence the =
need for
64bit MF!)
Andrew
--o--
>>> brian@xxxxxxxxxxxxxxx 21/04/04 04:19:20 >>>
I don't agree with this. There are two different 64-bit modes for =
Opteron
processors (in addition to the full 32-bit legacy mode). Unlike the =
Itanium
chips, Opteron can run a 64-bit OS in "legacy" mode. In this mode, it =
can
run 32-bit applications at full speed. (i.e. No performance hit for
"thunking" or anything like that like when running 32-bit apps on 64-bit
Windows for Itanium.) While 32-bit apps don't get the advantages of =
64-bit
integer calculations and stuff, they do get the advantages of all the =
extra
registers, etc. that AMD built into the chips.
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