topic Re: HPUX 32bit in Operating System - HP-UX

HPUX 32bit

chula — Mon, 05 Nov 2007 10:58:13 GMT

Hello, could anyone tell me if its possible to boot HPUX 11iV2 into 32bit kernel? If so, how?

Many thanks

Re: HPUX 32bit

A. Clay Stephenson — Mon, 05 Nov 2007 11:02:44 GMT

11iv2 (11.23) only exists as a 64-bit OS so that dog won't hunt. However, 11.23 is perfectly capable of producing and executing 32-bit code so there is no need for a 32-bit kernel.

Re: HPUX 32bit

Torsten. — Mon, 05 Nov 2007 11:03:34 GMT

"HP-UX 11i v2 supports only the 64-bit version of the HP-UX kernel."

see

http://docs.hp.com/en/5991-5526/ch02s03.html

Re: HPUX 32bit

melvyn burnard — Mon, 05 Nov 2007 15:08:32 GMT

In a word:
No!

It is 64 bit ONLY!

Re: HPUX 32bit

rick jones — Mon, 05 Nov 2007 20:12:54 GMT

The comments about the HP-UX 11iv2 kernel being a 64-bit only kernel are spot-on. What is prompting you to want to boot a 32-bit kernel? Do you have some sort of add-on kernel module which is not yet 64-bit? Or are you trying to run the bits on an older PA 1.1 (32-bit only) set of hardware?

Re: HPUX 32bit

whiteknight — Tue, 06 Nov 2007 01:12:23 GMT

Chula,

11iv2 is only for 64 bit kernel

WK

http://forums1.itrc.hp.com/service/forums/helptips.do?#33
please take a moment to give them credit for their assistance!

Re: HPUX 32bit

chula — Tue, 06 Nov 2007 05:42:26 GMT

Thank you for all your replys. I was given some software to test on PARISC 32bit HPUX, the SUN and AIX systems have 32bit kernal capabilities but I was unsure regarding HP.

I think the software for HPUX is labelled wrongly, I believe its actually 64bit.

Thanks again for your comment.

Re: HPUX 32bit

Dennis Handly — Tue, 06 Nov 2007 06:19:12 GMT

>I think the software for HPUX is labelled wrongly, I believe its actually 64bit.

As mentioned if this is user software it doesn't matter. It only matters if this is some type of kernel driver.

Re: HPUX 32bit

Steven E. Protter — Tue, 06 Nov 2007 08:09:24 GMT

Shalom,

32 bit applications will run, but the last OS that would install on a 32 bit system was 11.11 PA-RISC.

SEP

Re: HPUX 32bit

Scott Donaldson — Tue, 06 Nov 2007 10:12:20 GMT

Well,

Yes, 32 bit applications, that DON'T use shared memory will run fine on a 64 bit kernel. I had the opportunity to test a 32 bit flavour of a PICK database on a 64 bit kernel.

I had to work with the developer to hack out the shared memory feature so that it would work.

So its not just 'kernel drivers' that aren't compatible.

Re: HPUX 32bit

Don Morris_1 — Tue, 06 Nov 2007 11:17:41 GMT

Wha-huh? 32-bit applications can use shared memory (Posix or SysV) just fine on a 64-bit kernel. I can assure you folks would be screaming bloody murder for years now if this weren't the case.

Now, 32-bit applications are still limited by their runtime environment when it comes to setting up shared memory, certainly. By default, a 32-bit application only gets 2Gb of shared address space [depending on OS and architecture -- PA prior to 11.31 would set aside 256Mb of that for shared Memory Mapped I/O] -- but that's even more true with a 32-bit kernel. Sharing between 32-bit and 64-bit is possible (and folks do it all the time), but you may have to use flags like MAP_GLOBAL when the 32-bit application also uses Memory Windows or MAP_ADDR32 if the 64-bit application creates the shared object so that the 32-bit application can still find it.

Perhaps you can be more clear on the problem you saw?