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Old 06-21-2010, 11:04 AM   #1
netdesignate
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Registered: Jun 2010
Location: Florida
Distribution: Ubuntu 10.04
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MultiCore support for HP xw9300 (Dual AMD 248)


I have recently loaded the new LTS SERVER 10.04 release and it loaded without errors.

My only issue is that it does not seem to correctly identify the Dual Cores for each processor. (The HP xw9300 I have has two hardware CPUs - each one being Dual-Core - so there should be a total of 4 CPUs recognized - unless I am mistaken?)

If anyone knows how I can debug the processor recognition for multi-core support to get the additional cores recognized, please let me know...

My /proc/cpuinfo file looks like this:

Code:
xxxx@hostname:~$ cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 37
model name      : AMD Opteron(tm) Processor 248
stepping        : 1
cpu MHz         : 2194.452
cache size      : 1024 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
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 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good pni lahf_lm
bogomips        : 4388.90
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

processor       : 1
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 37
model name      : AMD Opteron(tm) Processor 248
stepping        : 1
cpu MHz         : 2194.452
cache size      : 1024 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
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 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good pni lahf_lm
bogomips        : 4388.42
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
 
Old 06-21-2010, 04:09 PM   #2
easuter
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Distribution: Slackware64 13.0, Slackware64 13.1
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I don't have a dual-processor machine myself but I would assume that as long as SMP support is compiled into the kernel then both processors should be detected...

However, take a look at this HP specifications page:
http://h18000.www1.hp.com/products/q...12186_div.HTML

If I'm reading that correctly then each AMD 248 processor is single-core, not dual-core, which means that your /proc/cpuinfo is correct.
 
Old 06-22-2010, 11:19 AM   #3
netdesignate
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Registered: Jun 2010
Location: Florida
Distribution: Ubuntu 10.04
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Quote:
Originally Posted by easuter View Post
I don't have a dual-processor machine myself but I would assume that as long as SMP support is compiled into the kernel then both processors should be detected...

However, take a look at this HP specifications page:
http://h18000.www1.hp.com/products/q...12186_div.HTML

If I'm reading that correctly then each AMD 248 processor is single-core, not dual-core, which means that your /proc/cpuinfo is correct.
You are completely correct.

I have another machine (same model: xw9300) with the Opteron 285 installed, which IS Dual Core - I just assumed that the 248 would be also - DUH!

Thanks for clearing that up for me - at least now I know that the machine is working as designed

Don
 
  


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