topic Re: IA-32 EL for RHEL AS4. in Operating System - Linux

IA-32 EL for RHEL AS4.

GnanaShekar — Tue, 28 Nov 2006 12:31:13 GMT

Hi,

We have RHEL AS4 installed on IA64 server.

I came to know that we can run 32-bit applications on this server using IA-32 EL (Emulation Layer).
Is IA-32 EL included in RHEL AS4. If so what do I do to turn it on?

[root@bangpcia4 ~]# more /etc/redhat-release
Red Hat Enterprise Linux ES release 4 (Nahant Update 3)

[root@bangpcia4 ~]# uname -m
ia64

Please suggest,
Thanks & Regards.

Re: IA-32 EL for RHEL AS4.

George Liu_4 — Tue, 28 Nov 2006 14:01:38 GMT

You can run 32bit application directly.
If you have an application with bith 64bit and 32bit installed, you should set appropriate path

We observed some 32bit applications do nor run correctly in 64bit OS installation. In this case, best strategy is to install 32bit OS

Re: IA-32 EL for RHEL AS4.

Mike Stroyan — Mon, 04 Dec 2006 14:02:54 GMT

George seems to be confusing IA64 and EM64T. There is no 32-bit kernel for IA64.

The IA-32 EL package is provided on the "EXTRAS" CD. Installation is discussed near the front of the RHEL4 U3 release notes. http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/release-notes/as-itanium/RELEASE-NOTES-U3-ia64-en.html
There is also an improved version available fromhttps://rhn.redhat.com/errata/RHEA-2006-0415.html

There are actually two ways that IA64 may run IA32 code. Most Itanium CPUs implement x86 instructions with a processor mode. The IA-32 EL adds a software emulation that translates to IA64 instructions at run time. That can be faster than the hardware implementation. And it is actually required for the latest dual core IA64 processors.

Re: IA-32 EL for RHEL AS4.

George Liu_4 — Mon, 04 Dec 2006 15:20:34 GMT

Hi Mike, I just overlooked.