Hi,
I am installing a new AIX 5.2 operating system. I have to decide
between 32-bit and 64-bit kernel. From different message boards and
IBM website, I don't see any reason to install 32-bit kernel. Looks
like all 32 bit applications will work on 64-bit kernel. Is this
correct? If this true why does IBM even supply a 32-bit kernel?

Thanks for your time,
Joe

On 2004-02-12, Joseph Silverius <josil@hotmail.com> wrote:
> Hi,
> I am installing a new AIX 5.2 operating system. I have to decide
> between 32-bit and 64-bit kernel. From different message boards and
> IBM website, I don't see any reason to install 32-bit kernel. Looks
> like all 32 bit applications will work on 64-bit kernel. Is this
> correct? If this true why does IBM even supply a 32-bit kernel?

For two reasons: some of the hardware that IBM still supports will only run
the 32 bit kernel, and 64 bits can often imply serious performance penalties
for applications that never need addresses or numbers in that range.

--
--Arthur Corliss
Bolverk's Lair -- http://arthur.corlissfamily.org/
Digital Mages -- http://www.digitalmages.com/
"Live Free or Die, the Only Way to Live" -- NH State Motto

josil@hotmail.com (Joseph Silverius) wrote in message news:<58e257c8.0402120809.7441742a@posting.google. com>...
> Hi,
> I am installing a new AIX 5.2 operating system. I have to decide
> between 32-bit and 64-bit kernel. From different message boards and
> IBM website, I don't see any reason to install 32-bit kernel. Looks
> like all 32 bit applications will work on 64-bit kernel. Is this
> correct? If this true why does IBM even supply a 32-bit kernel?
>
> Thanks for your time,
> Joe

Some applications runs with HACMP need 32-bit kernel.

Thanks for your reply. Since you mentioned about HACMP, do you know
about any other applications that requires 32 bit kernel.
Thanks,
Joseph

josil@hotmail.com (Joseph Silverius) wrote in message news:<58e257c8.0402120809.7441742a@posting.google. com>...
> Hi,
> I am installing a new AIX 5.2 operating system. I have to decide
> between 32-bit and 64-bit kernel. From different message boards and
> IBM website, I don't see any reason to install 32-bit kernel. Looks
> like all 32 bit applications will work on 64-bit kernel. Is this
> correct? If this true why does IBM even supply a 32-bit kernel?
>
> Thanks for your time,
> Joe

When running in JFS2 mode though, there are things that errdaemon does
not catch. Try to stick with JFS on your filesystems, unless you need
really big FS's.

BV

On 16 Feb 2004 12:40:15 -0800, bverzal@komatsuna.com (Bill) wrote:

>josil@hotmail.com (Joseph Silverius) wrote in message news:<58e257c8.0402120809.7441742a@posting.google. com>...
>> Hi,
>> I am installing a new AIX 5.2 operating system. I have to decide
>> between 32-bit and 64-bit kernel. From different message boards and
>> IBM website, I don't see any reason to install 32-bit kernel. Looks
>> like all 32 bit applications will work on 64-bit kernel. Is this
>> correct? If this true why does IBM even supply a 32-bit kernel?
>>
>> Thanks for your time,
>> Joe
>
>When running in JFS2 mode though, there are things that errdaemon does
>not catch. Try to stick with JFS on your filesystems, unless you need
>really big FS's.
>
>BV

Bill,

Can you be a little more specific in the things that errdaemon doesn't
catch?

TIA,
Mark