Quick Command to tell whether CPU is 64 or 32 bits?

[Laurie A. Krumrey]

Hi All,

Is there a quick command to tell if my unix
box is at 64 or 32 bits?

I support a bunch of boxes, so just wanted
a real quick and easy way.

Thank You,
Laurie Brown

[Victor BERRIDGE · Accepted solution]

Hi,
What about:
getconf KERNEL_BITS

All the best

Victor

[Michael Donovan]

Laurie,
I don't have a quick command to do this and I believe "getconf KERNEL_BITS" will only get what the bit size the kernel was compiled with not the bit size of the CPU. Try this:
start SAM
go to Performance Monitors-> System Properties
->Processor
check "Kernel Width Support"
Also:
32Bit only: D, E, G, H, and I class, K (PA7 x00), T500, and T5
32/64 bit: K class (PA8x00), and T600
64 bit only: V2200, N class, L class

See DocID KBRC00002420 24May00

[Steven Sim Kok Leong]

Hi,

An alternative quick and easy command to extract the information you need based on your hardware model is:

# grep `model` /etc/.supported_bits

Hope this helps. Regards.

Steven Sim Kok Leong
Brainbench MVP for Unix Admin
http://www.brainbench.com

[Alexander Russell]

Of course you can also do this:
swlist -l bundle | grep "RT",
but this doesn't tell you whether you have a 32-bit
install on a machine that supports both 32 and 64-bit.
Probably isn't any better/preferred to earlier:
grep `model` /etc/.supported_bits

[James R. Ferguson]

Hi Laurie:

To examine the current, running kernel, do:

# getconf KERNEL_BITS

This will return "32" or "64".

To find which kernel is supported by the hardware, regardless of what the kernel is running:

# getconf HW_CPU_SUPP_BITS

This will return "32", "32/64" or "64".

Also useful for interrogating what you can support:

# grep `model|awk -F/ '{print $3}` /usr/sam/lib/mo/sched.models

# grep `model|awk -F/ '{print $3}` /etc/.supported_bits

Patch PHCO_20894 provides the current .support_bits file for 11.0. Even on a 10.20 server, however, you can download it from the Patch database; unshar it; and manually extract the file from its .depot, thereby providing a ready-reference.

...JRF...

[Vincenzo Restuccia]

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