[THIN] Re: Hyper-Threading (again!)
- From: "Tim Mangan" <tmangan@xxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Fri, 20 Jun 2003 10:39:01 -0400
This doc seems consistent with what I have found - although I hadn't seen
that one yet. While ms has indicated some unspecified changes in 2003 for
HT beyond the licensing issue, I don't seem to be able to find what they are
in documentation or under test. Certainly, for routine user applications -
all processors are treated the same on all ms OS (including 2003). The OS
absolutely is not using any information on the relationship between
logical/physical processors.
I haven't seen the problems Ron alludes to against 2000, but he probably
knows best. I am inclined, however, to believe that any problem (other than
licensing) under 2000 would still exist under 2003 in the same scenario.
tim
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On
Behalf Of Jim Kenzig
Sent: Friday, June 20, 2003 10:17 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Hyper-Threading (again!)
Hmm found this document on Hyperthreading support from MS
http://www.microsoft.com/whdc/hwdev/platform/proc/HT-Windows.mspx
In it states:
All versions of the Windows 2000 operating system are fully
compliant with HT and should run without error on HT-enabled systems.
However, neither Windows 2000 nor any of its service packs support the
identification of HT processors. The type of modifications that are required
for HT processor identification and support are not typically supported in a
service pack. There are no plans to introduce this support in any future
Windows 2000 service pack.
As a result, Windows 2000 treats each logical processor as if it
were an individual physical processor. The operating system attempts to
start each logical processor in the sequence in which it was listed by the
BIOS until the number of processors that have been started is equal to the
processor license limit for that version of the operating system. Table 1
shows the processor limits for Windows 2000 versions.
JK
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On
Behalf Of Ron Oglesby
Sent: Friday, June 20, 2003 10:08 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Hyper-Threading (again!)
Yeah its all version of Win2k though, anyway.....=20
Anyway on Pro, Srvr, and Adv srvr with logical processors enabled they
will show up and work in the servers. The problem is that they are
finding problems under load with these OSs.
=20
Ron Oglesby
Senior Technical Architect
=20
RapidApp
Office 312.372.7188
Mobile 815.325.7618
email roglesby@xxxxxxxxxxxx
=20
-----Original Message-----
From: Jim Kenzig [mailto:jimkenz@xxxxxxxxxxxxxx]=20
Sent: Friday, June 20, 2003 9:02 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Hyper-Threading (again!)
That only refers to workstations though Ron it doesn't say anything
about
servers. Not doubting you just pointing it out. : )
JK
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On
Behalf Of Ron Oglesby
Sent: Friday, June 20, 2003 9:50 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Hyper-Threading (again!)
http://www.intel.com/support/platform/ht/os.htm
this is all you need to know. Don't use it on any flavor of 2k.
Ron Oglesby
Senior Technical Architect
=3D20
RapidApp
Office 312.372.7188
Mobile 815.325.7618
email roglesby@xxxxxxxxxxxx
=3D20
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