Disble 2nd CPU on HP A Class Servers

[Rajeesh_1]

Please let me know how to disable /enable the
second CPU on a HP A Class machine ?.

Since we need to do the performance benchmark of
our application with single and dual CPU.



Regards,
Rajeesh

[Khalid A. Al-Tayaran]

Hi,

You can control which process to run on which CPU you like with the process affinity (setproc.c) (by Bill McNarma --- I'm not sure)

here:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xad97663ce855d511abcd0090277a778c,00.html

But I don't know how to disable a processor or even if it is possible through software!!??

[Ravi_8]

Hi,

reboot the machine, interrupt the boot process (by pressing any key within 10 seconds from console)
main menu> config
main menu> proc
main menu> pro 1 off ( 0 for first cpu 1 for 2nd cpu , 2 for 3rd cpu et all..)
main menu> reset

now the m/c will boot with only one cpu (i.e cpu 0) if you have only 2 cpu's.

[Caesar_3]

Hello!

You can enter the boot manager and then do:
co (for config)
proc (processor)
pro 1 off (off the second processor)
Then restart the station

Caesar

[twang]

For A500 servers(dual-cpu),
1. Reboot the system
2. 10 second window > interrupt the boot process
3. co - enter configuration menu
4. cpu - get the list of cpu
5. cpu off - turn off cpu_id
6. reset - reboot the system

[Steven E. Protter]

If your system has GSP, at the console you can do this:

Ctrl-b

ss

That will list the processors.

As far as I know there is no command to disable the cpu. You'll have to open the box and remove the second CPU.

I've seen that done, its not terribly hard.

Then you'll have to put it back in and configure it, also with GSP. That has to be done explicitly.

I bet GSP does have a command for that. If there is a configure command, there must be an unconfigure command.


SEP

[KCS_1]

Hi, Rajeesh

on my opinion, to be disable/enable funtion of CPU on A-class is not exist.

So you should open/remove CPU which second(not monarch).


Gool luck!