topic Re: os bit in Operating System - HP-UX

os bit

himacs — Thu, 25 Jun 2009 18:38:52 GMT

Hi Admins,

m using hpux ia64 itanium sever.(B.11.23)

how to find out the OS bit 32 or 64?

actually i am downloading patches related to DB.

its asking OS bit.

plz help on this

regards
himacs

Re: os bit

James R. Ferguson — Thu, 25 Jun 2009 18:44:24 GMT

Hi:

The kernel on an Itanium servers is ONLY/ALWAYS 64-bit.

Regards!

...JRF...

Re: os bit

Patrick Wallek — Thu, 25 Jun 2009 18:46:59 GMT

JRF is correct, and the Itanium servers are also ALWAYS 64-bit.

To verify though:

# getconf KERNEL_BITS

Re: os bit

himacs — Thu, 25 Jun 2009 18:56:49 GMT

Thanks friends..full points

but in downloading site i found only

HP itanium and hp itanium-32 bits

so i got confused

regards
himacs

Re: os bit

James R. Ferguson — Thu, 25 Jun 2009 19:05:07 GMT

Hi:

> but in downloading site i found only HP itanium and hp itanium-32 bits

While the Itanium kernel is a 64-bit kernel, _both_ 32-bit and 64-bit user code can be run without problem. For that matter, you can run PA-RISC 32-bit or PA-RISC 64-bit code on an Itanium server thanks to the intrisic Aries emulator. See the 'Aries(5)' manpages for more information.

Regards!

...JRF...

Re: os bit

Patrick Wallek — Thu, 25 Jun 2009 19:09:11 GMT

Are you sure it is asking about the OS bit-ness and not the application bit-ness?

The developer should know that the OS is 64-bit only nowadays. However, not all applications have made that jump, unfortunately.

The Itanium and Itanium-32 **could** refer to the application and how it was compiled.

The application patches shouldn't care about the OS, but rather whether or not the app is 32 or 64 bit.

Re: os bit

Shiv007 — Fri, 26 Jun 2009 03:20:54 GMT

Also check for
#getconf HW_CPU_SUPP_BITS

to check whether the CPU is capable of 32 or 64.

Thanks
Shivaprasad

Re: os bit

Suraj K Sankari — Fri, 26 Jun 2009 04:41:41 GMT

Hi,

I think when you are using ia64 that means your os will be 64 bits.

or you can use this also

#getconf KERNEL_BITS

is the command to know os bit.

Suraj

Re: os bit

Dennis Handly — Fri, 26 Jun 2009 07:30:29 GMT

>JRF: The kernel on an Itanium servers is ONLY/ALWAYS 64-bit.

(Yes, black. :-)
Actually it isn't the kernel but the hardware is always 64 bit. All 32 bit applications are still running in 64 bit mode. It is software magic that allows a 32 bit application to work.

PA-RISC has a special hardware mode that does either 32 or 64 bit and changes what some instructions do.