How to Enable 4 Extra CPU

[Shreenath]

HI,
I hvae 4CPU hp64 bit machine. But only 2CPU's are enabled. Please let me know how to enable another 2CPU

Regards,

[OFC_EDM]

What's the model of the machine?
# model
What's the OS?
# uname -a

Do you have iCOD on the machine?

[Duncan Edmonstone]

You'll have to do better than that...

what sort of system? Model number please? Do you think this is an Instant Capacity (iCAP/iCOD) system, or do you think you will actually have to install CPUs?

HTH

Duncan

[Shreenath]

output of uname -a
HP-UX unknown B.11.23 U ia64

I am very new to HP64 bit
what is ICOD how to check that

[Prashanth Waugh]

Hi,

check it using
#swlist -R |grep -i icap

Reagrds
Prashnat

[Shreenath]

output of
# swlist -R |grep -i icap is
# B9073BA B.11.23.08.03.00.22 HP-UX iCOD Instant Capacity (iCAP)

how to proced next ??

Thanhs,
Shreenath

[Duncan Edmonstone]

You still haven't told us what sort of system this is...

Posr then output of the following commands:

model
machinfo
icapstatus



HTH

Duncan

[Shreenath]

model ->Output is ia64 hp server rx6600
machineinfo:
machinfo ->Output is
CPU info:
Number of CPUs = 8
Clock speed = 1415 MHz
Bus speed = 532 MT/s
CPUID registers
vendor information = "GenuineIntel"
processor version info = 0x0000000020010104
architecture revision: 0
processor family: 32 Intel(R) Itanium 2 9100 series
processor model: 1 Intel(R) Itanium 2 9100 series
processor revision: 1 Stepping A1
largest CPUID reg: 4
processor capabilities = 0x0000000000000005
implements long branch: 1
implements 16-byte atomic operations: 1
Bus features
implemented = 0xbdf0000020000000
selected = 0x0000000000000000

Cache info (per core):
L1 Instruction: size = 16 KB, associativity = 4
L1 Data: size = 16 KB, associativity = 4
L2 Instruction: size = 1024 KB, associativity = 8
L2 Data: size = 256 KB, associativity = 8
L3 Unified: size = 6144 KB, associativity = 6

Memory = 8162 MB (7.970703 GB)

Firmware info:
Firmware revision = 03.01
FP SWA driver revision: 1.18
IPMI is supported on this system.
ERROR: Unable to obtain manageability firmware revision info.

Platform info:
model string = "ia64 hp server rx6600"
machine id number = 2f770ffc-1966-11dd-9d38-1e0f0b63914e
machine serial number = SGH48137WX

OS info:
sysname = HP-UX
nodename = unknown
release = B.11.23
version = U (unlimited-user license)
machine = ia64
idnumber = 0796332028
vmunix _release_version:
@(#) $Revision: vmunix: B11.23_LR FLAVOR=perf Fri Aug 29 22:35:38 PDT 2003 $


and :
icapstatus -> output is
ERROR: Instant Capacity is not supported on this class of system.


Regards,
Shreenath

[Torsten.]

According to this your server is fully loaded with 4 CPU modules = 8 cores.

Why do you think you have less?

[Duncan Edmonstone]

OK, so this has nothing to do with iCAP. How many cores does the OS currently think it can see?

ioscan -kfC processor

will tell you... I would expect to see 8.

HTH

Duncan

[Shreenath]

Ohh,
I need only 4CPU enabled. Then how to disable remaining 4 CPU.

# ioscan -kfC processor
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
processor 0 120 processor CLAIMED PROCESSOR Processor
processor 1 121 processor CLAIMED PROCESSOR Processor
processor 2 122 processor CLAIMED PROCESSOR Processor
processor 3 123 processor CLAIMED PROCESSOR Processor
processor 4 124 processor CLAIMED PROCESSOR Processor
processor 5 125 processor CLAIMED PROCESSOR Processor
processor 6 126 processor CLAIMED PROCESSOR Processor
processor 7 127 processor CLAIMED PROCESSOR Processor

Thanks,

Regards,
Shreenath

[Torsten.]

stop at efi shell and use "cpuconfig" to disable cpu modules.

[Shreenath]

Hi Torsten,
EFI Shell ???? Do i need to ask this to IT team or I can do it remotely ( If i am having root password)
Can you please tell something more about how to use EFI shell
Thanks a lot your quick responce.

Regards,
Shreenath

[Torsten.]

You can access EFI shell remotely if you have access to the MP.

Why you want to disable the CPUs?

[rick jones]

EFI shell - think BIOS with a niftier interface :) the cpuconfig command there can be used to enable/disable entire processors (both cores at once) and/or enable/disable hyperthreading.

Getting to the EFI shell requires rebooting, and then, while at the console interrupting the boot at the EFI boot menu and selecting EFI. I suspect that there are one or more manuals on docs.hp.com that discuss EFI and/or the cpuconfig command therein so those are good search input fodder.

Depending on the specific nature of what you want to do, you might also consider shoving CPUs into psets, not assign any processes to the pset(s) and then making sure those psets don't take interrupts (man intctl). That would be one way you could essentially disable CPUs on a live system. HP-UX 11.31 also has the ability to enable/disable use of hyperthreads on a pset by pset basis...

So, *specifically* what do you want to do that has you wanting to disable CPUs?

[Shreenath]

Hi,
i am testing performance of the product on
2,4,8 CPU machine. Instad of having different machine for 2,4,8 CPU i thought of having one machine and use that by enable/disable the cpu
Regards,
Shreenath

[rick jones]

2, 4 and 8 CPU - since this is on a four socket system with dual-core processors I presume you mean 1, 2 and 4 sockets/processors for 2 4 and 8 active cores. I would suggest the aforementioned EFI path and the cpuconfig command. It involves rebooting, but it will be easier IMO.

As you go, you may want to make use of the features of Caliper:

http://www.hp.com/go/caliper