Re: Choosing a HyperThreading/SMP/MultiCore kernel ?
From: Bill Davidsen
Date: Sun Jan 14 2007 - 10:51:41 EST
Valdis.Kletnieks@xxxxxx wrote:
On Sat, 13 Jan 2007 15:18:31 EST, Bill Davidsen said:
Valdis.Kletnieks@xxxxxx wrote:
On Fri, 12 Jan 2007 10:03:49 EST, Lennart Sorensen said:
I would expect any distribution should work on these (as long as the
kernel they use isn't too old.). Of course if it is a Mac, you need a
distribution that supports their firmware (which is of course not a PC
bios). As long as you can boot it, any i386 or amd64 kernel with smp
enabled should use all the processors present (well amd64 on the
core2duo and on the p4 if it is em64t enabled).
amd64 will only work on a core2duo if it's a T7200 or higher - the
lower numbers are 32-bit-only chipsets. I admit not knowing what
exact variant the Mac has.
I don't believe that's correct, the Intel features page indicates all
core2 have both 64bit and virtualization. Perhaps some of the core (no
2) models didn't? Even the old 930 had those features by my notes.
My screwup - the chart I looked at managed to get the Core and Core2 series
mixed up. Here's a hopefully more canonical one:
http://www.intel.com/products/processor_number/proc_info_table.pdf
Does however list some Core2 that don't do virtualization (page 3, the
T5600 and T5500), which is what I think confused the author of the table
that I misread. ;)
I missed those in terms of virtualization, but it seems that all core2
support "intel 64" which I assume means emt64t, and what I thought
Valdis meant by "the lower numbers are 32-bit-only chipsets." They all
do seem to have 64bit, and should run 64bit Linux just fine.
--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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