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<font size=3>Yes, Sorry. I was rushing for dinner, and thanks for making
the corrections.<br><br>
Indeed, the Tyans are of course are a HyperTrasport MOBO. The CPU's are
Dual Core Opterons,<br>
hence 8 CPU's, and do not support HyperThreading as you correctly
stated.<br>
(Although this would make the Opteron a bit more practical for the client
side if it did, as dual core<br>
don't do much for the client side as you know. This shows up as 8 CPU's.
(Not to mention that the<br>
client side application would have to support the dual core processor and
I don't see that happening<br>
any time soon, which is not to say it won't.<br><br>
The DUal Intel P4 is HypterThreading, and the Intel based MOBO's do not
support HyperTransport<br>
as you correctly point out. This of course, as you pointed out shows up
as 4 CPU's, 2 which are of<br>
course real, the other two are virtual. :)<br><br>
However, I will say this much for the 3.2 P4 Xeon HyperThread procs,
using 2.4 with 2.6SMP yields<br>
much better results in processor thread scheduling than it did on 2.3
with the SMP kernel.<br>
So nice gain on the same hardware by just upgrading from 2.3 to 2.4 with
2.6SMP... If anyone<br>
is running this out there and 2.4 with 2.6SMP is an option, go for it.
You WILL notice.<br><br>
As much as I admit the Tyan HyperTransport motherboard with Dual
Opteron's is a<br>
powerhouse, it is not my private gaming machine for me and my boys
;-) It is a<br>
work machine, (but I have fun stuff running on it, and I won't give it
back ever) :)<br><br>
I widely use it to do Queuing, modeling, and modeling of stochastic
processes I<br>
am a high speed transport network architect by trade. This chews up
tons of CPU.<br>
Some of the models with data collected would run several days if it were
not for this puppy.<br>
But when it is not doing work, it is all mine. :)<br><br>
(As a side note, honestly the logical CPU of the HyperTransport board
based Opteron does<br>
not yield the same performance as the primary processor. So although
real<br>
and logical, it at times behaves virtual. Where if I had 8 real
processors in a<br>
grid, I could truly schedule processes in multiple ways to the
processors. Don't<br>
get the ability with the Dual core Opterons.<br><br>
Thanks for the corrections.<br><br>
Mark<br><br>
<br>
At 05:59 PM 10/29/2005, you wrote:<br><br>
<blockquote type=cite class=cite cite>I think you're mistaken, as this is
a HyperTransport board, not Hyperthreading (hyperthreading is an Intel
technology, HyperTransport is an AMD technology.. and they are very
different techs at that). They aren't virtual cpus, but logical
cpus.<br><br>
Intel P4/Xeons use Hyperthreading (which show up as logical cpus as
well).<br>
Opteron based boards are HyperTransport, and dont support
Hyperthreading.<br><br>
It sounds like you have 4 dual core processors (so you have a total of 8
Logical, but very real processors). Very nice rig.. Wish it were mine
:)<br><br>
A Quad Dual Core Xeon would show up w/ 16 logical processors (8 very real
processors and 8 very virtual hyperthreading units).<br><br>
Just don't want anyone getting confused!</font></blockquote>
<x-sigsep><p></x-sigsep>
<tt>S1,-------------------------------------------------------------------------------<br>
Mark J. DeFilippis, Ph. D
EE
defilm@acm.org<br>
defilm@ieee.org<br><br>
<br>
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