- Multi Processor
- Posted by Ken on January 12th, 2004
1. Does Windows see Hyper Threading as computer with
multi processor?
2. Are there any waysthat u can detect if the computer
has multi processor?
Ken
- Posted by pawar on January 12th, 2004
use WMI to enum processors...
"Ken" <cyyu@lyncsoftware.com> wrote in message
news:00f601c3d8d9$61d8b200$a001280a@phx.gbl...
- Posted by Maxim S. Shatskih on January 12th, 2004
Yes.
--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com
- Posted by Pavel A. on January 12th, 2004
"Ken" <cyyu@lyncsoftware.com> wrote in message news:00f601c3d8d9$61d8b200$a001280a@phx.gbl...
See KeQueryActiveProcessors() and KeGetCurrentProcessorNumber
-- PA
- Posted by on January 12th, 2004
If I called KeGetCurrentProcessorNumber for a processor
support Hyper Threading, would it return 1 processor or 2?
Ken
- Posted by Don Burn on January 13th, 2004
It will return 0 or 1 to indicate that you have two processors.
--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
Remove StopSpam from the email to reply
<anonymous@discussions.microsoft.com> wrote in message
news:072d01c3d967$ac80ffe0$a301280a@phx.gbl...
- Posted by Maurice zmau on January 13th, 2004
"Maxim S. Shatskih" <maxim@storagecraft.com> wrote in message news:<uIbcKPP2DHA.3140@tk2msftngp13.phx.gbl>...
In PC magazine, someone said that Hyper Threading can not be fully
used unless the OS does some adaptation. With respect to NT, it was
stated that these adaptation are expected later OS versions (I do not
remember exactly the words but that was the general idea).
On the other Hand Intel stated that this feature is Opaque to the OS
(i.e. the OS does not need to do any adaptations.
What is happening in reality ?
Thanks
Maurice
- Posted by Don Burn on January 13th, 2004
It is opaque for operation, but not performance from what I know. Since
scheduling on the second hyper-thread can take bandwidth from the first you
want to have the OS be smart of scheduling. This is why Microsoft wants for
a 2 physical processor machine the processors to be 0 = (processor 0
hyperthread 0), 1 = (processor 1 hyperthread 0), 2 = (processor 0
hyperthread 1), 3 = (processor 0 hyperthread 1)
and not alternating on hyperthreads
--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
Remove StopSpam from the email to reply
"Maurice zmau" <zmau@netvision.net.il> wrote in message
news:a4a129d6.0401130135.54f32c71@posting.google.c om...
- Posted by Maxim S. Shatskih on January 14th, 2004
"Unless the OS will be SMP" they mean.
I trust Intel's officials more then technically illiterate media people.
--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com
