dual core cpu

[mjos]

Hi,
Can somebody please help in identifying whether the sever is dual core or if it has really 16 CPU's as listed below

model
ia64 hp server rx8640

ioscan -fnCprocessor
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
processor 0 0/120 processor CLAIMED PROCESSOR Processor
processor 1 0/121 processor CLAIMED PROCESSOR Processor
processor 2 0/122 processor CLAIMED PROCESSOR Processor
processor 3 0/123 processor CLAIMED PROCESSOR Processor
processor 4 0/124 processor CLAIMED PROCESSOR Processor
processor 5 0/125 processor CLAIMED PROCESSOR Processor
processor 6 0/126 processor CLAIMED PROCESSOR Processor
processor 7 0/127 processor CLAIMED PROCESSOR Processor
processor 8 1/120 processor CLAIMED PROCESSOR Processor
processor 9 1/121 processor CLAIMED PROCESSOR Processor
processor 10 1/122 processor CLAIMED PROCESSOR Processor
processor 11 1/123 processor CLAIMED PROCESSOR Processor
processor 12 1/124 processor CLAIMED PROCESSOR Processor
processor 13 1/125 processor CLAIMED PROCESSOR Processor
processor 14 1/126 processor CLAIMED PROCESSOR Processor
processor 15 1/127 processor CLAIMED PROCESSOR Processor

TOP shows me 16 CPU's

Cpu states:
CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS
0 0.79 0.0% 0.0% 1.0% 99.0% 0.0% 0.0% 0.0% 0.0%
1 0.41 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
2 0.66 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
3 0.74 96.1% 0.0% 3.9% 0.0% 0.0% 0.0% 0.0% 0.0%
4 0.45 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
5 0.64 100.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
6 0.56 100.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
7 0.47 87.3% 0.0% 6.9% 5.9% 0.0% 0.0% 0.0% 0.0%
8 0.06 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
9 0.05 0.0% 0.0% 28.7% 71.3% 0.0% 0.0% 0.0% 0.0%
10 0.07 1.0% 0.0% 2.0% 97.0% 0.0% 0.0% 0.0% 0.0%
11 0.05 0.0% 0.0% 1.0% 99.0% 0.0% 0.0% 0.0% 0.0%
12 0.09 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
13 0.03 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
14 0.04 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
15 0.08 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%

nh1d0t04#machinfo -v
CPU info:
Number of CPUs = 16
Clock speed = 1418 MHz
Bus speed = 533 MT/s
CPUID registers
vendor information = "GenuineIntel"
processor serial number = 0x0000000000000000
processor version info = 0x0000000020000704
architecture revision: 0
processor family: 32 Intel(R) Itanium 2 9000 series
processor model: 0 Intel(R) Itanium 2 9000 series
processor revision: 7 Stepping C2
largest CPUID reg: 4
processor capabilities = 0x0000000000000005
implements long branch: 1
implements 16-byte atomic operations: 1
Bus features
implemented = 0xbdf0000020000000
selected = 0x0020000000000000
Exclusive Bus Cache Line Replacement Enabled

From the above outputs I am not able to decide whether the server has infact 16 CPU's or it is 8 dual core CPU's

[Dennis Handly]

>I am not able to decide whether the server has in fact 16 CPUs or it is 8 dual core CPUs

There is no real difference. You have 16 cores. Itanium 2 9000 series is dual core.

[Jan Zalman]

Hi, there is a machinfo command, see the

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=en&taskId=120&prodSeriesId=447335&prodTypeId=15351&objectID=c01161194

Regards

[Sharma Sanjeev]

Hi

System is having Dual Core CPU's

[Oviwan]

on 11.31 you can enable hyperthreading by setting the kernelparameter lcpu_attr to 1.
hence if you have enabled this and the top shows you 8 CPU you have for example only 4 cpu's...

[mjos]

I am not able to find any kernel parameter by the name of cpu_attr

kctune |grep -i cpu_attr

Is there any command to find out whether it is 8 dual core CPU's

[Oviwan]

you have 8 dual core cpu's

lcpu_attr is only since HPUX 11.31 available... check with "uname -a" for your hpux version

[Jan Zalman]

Look at the link above.

machinfo | awk '/processor family:/{print $3}'

31 ... single core IA
32 ... dual core IA

[Sharma Sanjeev]

Hi

run SAM > Performance Monitor > System Properties

[mjos]

Thanks, the os versions is 11.23 & model is ia64 hp server rx8640.
How did you decide that it is 8 core dual cpu's