On Monday 01 May 2006 12:51 am, UNIX admin wrote:
> Does Solaris boot into 64-bit mode on intel's EM64T Xeons and Pentium D's?
I'm not up on all of the models for the intel line, but I've run it on both
what I think is EM64T (64-bit, Xeon + extentions), and some type of dual core
EM64T, and it ran also. Interesthing that Solaris sees 4 cores when you turn
on hyperthreading, for a single processor (2 cores, both with hyper
threading).
This is from my notes, I don't have the system anymore. This is an EM64T dual
core with hyperthreading turned on. Not much info, that's all I can find.
# psrinfo -vp
The physical processor has 4 virtual processors (0, 1, 2, 3)
x86 (chipid 0x0 GenuineIntel family 15 model 4 step 4 clock 2810 MHz)
Intel(r) Pentium(r) D CPU 3.20GHz
As I understand, and I could be completely off base, you can have an int and a
float operation at the same time, when you have hyperthreading. This is kinda
interesting for a dual core, since you can in theory have 2 int or 2 float
operation at the same time. I think there was some scheduler work in Solaris,
I'm not sure if they added support for taking advantage of that or not. You
could probably do some cool things with that though.
I was reading this page on Sun's website. Marc Andreessen started a company
called Ning, They did a cost analasis on Intel vs. AMD for both Linux and
Solaris. They converted over to Solaris x64 and saved a substantial amount of
savings.
http://www.sun.com/software/solaris/ning.jsp
--
Alan DuBoff - Sun Microsystems
Solaris x86 Engineering
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