Hi, John !

Indeed, the number of CPU's are limited to 8 in kernel-smp

  diff config-2.6.9-42.0.3.ELlargesmp 
config-2.6.9-42.0.3.ELsmp
3,4c3,4
< # Linux kernel version: 2.6.9-42.0.3.ELlargesmp
< # Thu Oct  5 16:44:02 2006
---
> # Linux kernel version: 2.6.9-42.0.3.ELsmp
> # Thu Oct  5 16:27:03 2006
74c74
< # CONFIG_MEM_MIRROR is not set
---
> CONFIG_MEM_MIRROR=y
94c94
< CONFIG_NR_CPUS=64
---
> CONFIG_NR_CPUS=8
[hasgkssxtmrs] /boot #

I think  a long time ago, i've noticed it .. but then something
something came around and it switch out of my brain again ...

Thank's a lot !!

But why crashed the largesmp-kernel ?
... could that concerned with the "CONFIG_MEM_MIRROR=y" option ?

And which kernel got Troy on his machine running ?

Thanks again & Cheers

         Martin

______________________________________________________
Martin Flemming
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Notkestr. 85       phone  : 040 - 8998 - 4667
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______________________________________________________

On Thu, 15 Mar 2007, John Hearns wrote:

> Martin Flemming wrote:
>> Hi, Stephen !
>> 
>> Yep, this was also my thought,
>> but this kernel "kernel-largesmp-2.6.9-42.0.3.EL.x86_64"
>> crashes as i remarked ...
>> 
> Martin, I recently met the same issue on getting a 4600 up and running with 
> all cores. The machine in question was running SuSE I'm afraid.
> We provided an updated kernel for it, with
> CONFIG_NR_CPUS set to 128
> This is a 2.6.16 kernel as these later kernels have better NUMA features.
>
> I would advise getting a recent (say) Fedora kernel source RPM and 
> configuring it up, or maybe better one from the SL 5 beta.
> Or even taking the 2.6.9 EL kernel source and setting CONFIG_NR_CPUs
> higher.
>