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os bit

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himacs
Super Advisor

os bit

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
8 REPLIES
James R. Ferguson
Acclaimed Contributor
Solution

Re: os bit

Hi:

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

Regards!

...JRF...
Patrick Wallek
Honored Contributor

Re: os bit

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

To verify though:

# getconf KERNEL_BITS
himacs
Super Advisor

Re: os bit


Thanks friends..full points

but in downloading site i found only

HP itanium and hp itanium-32 bits

so i got confused

regards
himacs
James R. Ferguson
Acclaimed Contributor

Re: os bit

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...
Patrick Wallek
Honored Contributor

Re: os bit

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.
Shiv007
Frequent Advisor

Re: os bit

Also check for
#getconf HW_CPU_SUPP_BITS

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

Thanks
Shivaprasad
Suraj K Sankari
Honored Contributor

Re: os bit

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
Dennis Handly
Acclaimed Contributor

Re: os bit

>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.