During the Xen discussion at MerriLUG, it was mentioned that the Xen
implementation on FC6 required PAE on the cpu. I knew that my two Linux
boxen at home did not support VTX, so I checked the processors for the PAE
flag.
My Xeon system had PAE and also supported hyperthreading, which was hardly
On 4/25/07, Bob King [EMAIL PROTECTED] wrote:
During the Xen discussion at MerriLUG, it was mentioned that the Xen
implementation on FC6 required PAE on the cpu. I knew that my two Linux
boxen at home did not support VTX, so I checked the processors for the PAE
flag.
My Xeon system had PAE and
On 4/25/07, Thomas Charron [EMAIL PROTECTED] wrote:
I was wondering if anyone had heard anything about this? If the cpu really
supports hyperthreading then I might want to invest in a new mobo for that
box.
The differences between Dualcore and Hyperthreading are debatable.
Is it possible
Interesting question, got me wondering if my Core 2 Duo cpu would look the
same. Haven't had the chance to check it yet, but I did some reading and found
that it seems neither the Pentium D 805 or my Core 2 Duo 6400 have hyperthread
technology although they're both dual-cores.
I haven't
There are also a few dual cores with hyperthreading, Xeon was one product line
I noticed had such models.
Logically, the HT tech would add some performance at the expense of some added
hardware logic, dual cores adds more performance but takes more silicon, dual
cores with HT take the most
On 4/25/07, Thomas Charron [EMAIL PROTECTED] wrote:
The differences between Dualcore and Hyperthreading are debatable.
Is it possible that whatever reported the HT bit simply did so because
the capabilities from a software perspective are so simular?
After rereading, I anted to clarify.
GNHLUG will be sponsoring a one-table display of Linux at the Near-Fest
Ham Event. Since we typically want a lockable, indoor space with power,
I signed up as a commercial vendor, which costs $40. per eight-foot
space (and $16 per eight-foot table to go in it). This is considerably
more than
On 4/25/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
That article also says the D 805 looks like a great overclocker, the
biggest reason I prefer my Core2Duo is power consumption, but with the 805
in hand I might look for a good overclocking mobo to take full advantage of
it, if that's your
On 4/25/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
also, the table on page 18 of a good review of the D 805 on Tom's Hardware shows the
D 805 has no HT implementation, but comments on the equivalency of dual-core. Find
it at:
I was wondering if anyone had heard anything about this? If the cpu really
supports hyperthreading then I might want to invest in a new mobo for that
box.
This got me curiously googling around and I found this in an Intel doc
on the Linux kernel:
ht in 'flags' field of /proc/cpuinfo indicate
On 4/25/07, Thomas Charron [EMAIL PROTECTED] wrote:
Yes, this is exactly why I say the differences from a software
perspective are debatable.
In the sense of what you have to program to make use of it, yes.
Either way, you have to worry about shared memory concurrency,
locking, re-entrance,
[EMAIL PROTECTED] writes:
There are also a few dual cores with hyperthreading, Xeon was one
product line I noticed had such models.
Yeah, I just checked one of our new machines which is a dual
dual-core. It reports 4 GenuineIntel CPUs in /proc/cpuinfo, all of
which have the 'ht' flag set.
On 4/25/07, Shawn K. O'Shea [EMAIL PROTECTED] wrote:
ht in 'flags' field of /proc/cpuinfo indicate that the processor
supports the Machine Specific
Registers to report back HT or multi-core capability. Additional
fields (listed down below) in the
CPU records of /proc/cpuinfo will give more
On Apr 25, 2007, at 12:53, Shawn K. O'Shea wrote:
ht in 'flags' field of /proc/cpuinfo indicate that the processor
supports the Machine Specific
Registers to report back HT or multi-core capability. Additional
fields (listed down below) in the
CPU records of /proc/cpuinfo will give more
On Wednesday 25 April 2007 14:15:55 Paul Lussier wrote:
[EMAIL PROTECTED] writes:
There are also a few dual cores with hyperthreading, Xeon was one
product line I noticed had such models.
Yeah, I just checked one of our new machines which is a dual
dual-core. It reports 4 GenuineIntel
On Wednesday 25 April 2007 13:56:35 Ben Scott wrote:
On 4/25/07, Thomas Charron [EMAIL PROTECTED] wrote:
Yes, this is exactly why I say the differences from a software
perspective are debatable.
In the sense of what you have to program to make use of it, yes.
Either way, you have to
On 4/25/07, Bill McGonigle [EMAIL PROTECTED] wrote:
Right, 'ht' just reports whether the CPU knows it has hyperthreading
or knows it doesn't have hyperthreading. This tripped me up for a
good hour once!
So the HT flag does not indicate HyperThreading capability. Rather,
the HT flag
Actually it looks like the newer Xeons (dual and quad cores) don't support HT.
I googled and found this comment:
Hyperthreading is only on the NetBurst based 50xx Xeons - the Core2 based 51xx
Xeons do not support hyperthreading
The same is apparently true of the 5300 quad-core Xeon. So
On Wed, Apr 25, 2007 at 02:15:55PM -0400, Paul Lussier wrote:
[EMAIL PROTECTED] writes:
There are also a few dual cores with hyperthreading, Xeon was one
product line I noticed had such models.
Yeah, I just checked one of our new machines which is a dual
dual-core. It reports 4
On Wednesday 25 April 2007 15:19:48 [EMAIL PROTECTED] wrote:
Actually it looks like the newer Xeons (dual and quad cores) don't support
HT.
I googled and found this comment:
Hyperthreading is only on the NetBurst based 50xx Xeons - the Core2 based
51xx Xeons do not support hyperthreading
On 4/25/07, Bill McGonigle [EMAIL PROTECTED] wrote:
Right, 'ht' just reports whether the CPU knows it has hyperthreading
or knows it doesn't have hyperthreading. This tripped me up for a
good hour once!
I have a 2.5GHz P4 here without hyperthreading, but it knows that it
doesn't:
$cat
I can definitely confirm that my core 2 quad system has no HT
available to turn on in the bios (but does show ht in the cpuflags,
which aligns with other comments in the thread).
I've heard it suggested several times now that features
like HyperThreading can be enabled or disabled in the
On Wednesday 25 April 2007 17:10:15 Michael ODonnell wrote:
I can definitely confirm that my core 2 quad system has no HT
available to turn on in the bios (but does show ht in the cpuflags,
which aligns with other comments in the thread).
I've heard it suggested several times now that
I've heard it suggested several times now that features
like HyperThreading can be enabled or disabled in the BIOS
I notice that dmidecode shows the flags in question in the
output for record Type 4, so maybe the BIOS modifies the
DMI data and the kernel chooses to believe that instead
of
On 4/25/07, Michael ODonnell [EMAIL PROTECTED] wrote:
I can definitely confirm that my core 2 quad system has no HT
available to turn on in the bios (but does show ht in the cpuflags,
which aligns with other comments in the thread).
I've heard it suggested several times now that features
like
Original message
Michael ODonnell [EMAIL PROTECTED] wrote:
I've heard it suggested several times now that features
like HyperThreading can be enabled or disabled in the BIOS
and I don't understand how that can be possible. AFAIK a CPU
either does or doesn't have a given feature and
[EMAIL PROTECTED] writes:
Actually it looks like the newer Xeons (dual and quad cores) don't
support HT.
I googled and found this comment:
Hyperthreading is only on the NetBurst based 50xx Xeons - the Core2
based 51xx Xeons do not support hyperthreading
The same is apparently true of
On Apr 25, 2007, at 22:24, Paul Lussier wrote:
[EMAIL PROTECTED] writes:
Actually it looks like the newer Xeons (dual and quad cores) don't
support HT.
I googled and found this comment:
Hyperthreading is only on the NetBurst based 50xx Xeons - the Core2
based 51xx Xeons do not support
28 matches
Mail list logo
