HP-UX

Hi,

I have two questions here.
I need to find out the number of physical processors the HP-UX operating system is running in. Here i am referring to the physical processors in a system and not the number of cores.

I can get the number of cores using the command 'ioscan -fnkC processor'. But what I need is the physical procesor count. So if a processor is dual-core, number of cores will be 2 and number of physical processors will be 1.

Also I need to find out the architecture of the processor whether it is 32/64 bit. here I am referring to the processor capability and not whether the kernel is 64 or 32 bit.


Can you please help me on this??

Hi,

you can try it by sam. Just open sam, click on Performance Monitors Section and then click on System Properties. There you can open The category processor and you will have your solution.

Hi ortsvorsteher,
thnks for ur reply. I forgot to mention that I am actually looking to determine this information programatically. If it is not possible programatically, then a command output is also fine.

For itanium machines, look at the output of machinfo command, for PA-RISC its seems more tricky...
CPU architecture 32/64?

Code:

lod # getconf HW_CPU_SUPP_BITS                                    
64

This is going to be dependent on which levels of the OS you're hoping to have this work on. If you're using 11.11 or earlier, you're pretty much out of luck. There are some scripts and so forth that I can point you at that will get you a count that is reasonably close.

However, for HP-UX 11i v3 (11.31) the /usr/include/sys/pstat.h library was updated to allow precise counting of chips and cores. This update was ported back to 11i v2 (11.23) with kernel patch PHKL_34912, with a few special considerations.

The relevant calls are the mpctl() call and the pstat_getprocessor() call.

If you have access to the HP Developer Support site, you can look up a paper called "Dynamic logical processors for Hyper-Threading on HP-UX 11i v3" (4AA0-7695ENW, Rev 1, March 2007). Also, this link may give you some info Update to the Intel® Itanium® 2 Processor Reference Manual for Software Development and Optimization.

Hope that helps!

You can find some CPU infos in "machinfo" command

Hi Midcain,

Thnx for the info. I think I can get the number of sockets(physical processors) from the psp_socket_id in pstat_getprocessor().

And before 11 iv3 release, these fields don't exist in the pst_processor struct or anywhere else and so as you said I may not be able to find it(CPU soclets or physical processors) before 11iv3.

Masanamuthu - machinfo still returns the number of cores.