Daniele Benedetti wrote:
> Hi all,
> I've installed the SLC4 64bit from the standard menu installation
> using the network at CERN.
> I have a standard cern desktop HP dc-5850 with a AMD Phenom X4.
>
> I discovered that the installed kernel does not support multicore;
> this is what I see from /proc/cpuinfo
>> [lxcms75] ~ > more /proc/cpuinfo
>> processor       : 0
>> vendor_id       : AuthenticAMD
>> cpu family      : 16
>> model           : 2
>> model name      : AMD Phenom(tm) 9600B Quad-Core Processor
>> stepping        : 3
>> cpu MHz         : 2300.000
>> cache size      : 512 KB
>> fpu             : yes
>> fpu_exception   : yes
>> cpuid level     : 5
>> wp              : yes
>> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr
>> pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
>> fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow pni monitor cx16 popcnt
>> lahf_lm cmp_legacy svm extapic cr8_legacy altmovcr8 abm sse4a
>> misalignsse 3dnowprefetch osvw
>> bogomips        : 4591.29
>> TLB size        : 1104 4K pages
>> clflush size    : 64
>> cache_alignment : 64
>> address sizes   : 48 bits physical, 48 bits virtual
>> power management: ts ttp tm stc 100mhzsteps hwpstate <NULL> 
>
> This is the kernel installed on my machine:
>> [lxcms75] ~ > uname -a
>> Linux lxcms75 2.6.9-89.0.7.EL.cern #1 Wed Aug 19 10:01:36 CEST 2009
>> x86_64 x86_64 x86_64 GNU/Linux
> or
>> [lxcms75] ~ > rpm -qa | grep kernel
>> kernel-devel-2.6.9-89.EL.cern
>> kernel-module-openafs-2.6.9-89.EL.cern-1.4.8-8.cern
>> kernel-module-openafs-2.6.9-89.0.7.EL.cern-1.4.6-3.cern
>> kernel-utils-2.4-18.el4
>> kernel-module-openafs-2.6.9-89.0.7.EL.cern-1.4.8-8.cern
>> kernel-2.6.9-89.0.7.EL.cern
>> kernel-module-openafs-2.6.9-89.EL.cernsmp-1.4.8-8.cern
>> kernel-2.6.9-89.EL.cern
>> kernel-devel-2.6.9-89.0.7.EL.cern
> What I should do to install the 64bit multicore kernel and then modify
> the boot kernel?

Install the smp kernel (I do not see it in the above list)

yum install kernel-smp.x86_64 kernel-smp-devel.x86_64

If needed modify /etc/grub.conf to make the smp kernel the default kernel.

Urs


>
> thanks,
> Daniele