Linux may or may not run on the older mainframes. There are instances of
S/390 Linux running on Rx1 and even 2003 machines but there is no floating
point support so it runs degraded. Running or not on these older boxes,
it is not supported by IBM or any of the distributors. This may or may
not be of concern.
Richard W. Lauck
Cornerstone Systems, Inc.
Sr. Systems Programmer
IBM Certified S/390 Parallel Sysplex Systems Programmer
IBM Certified S/390 Parallel Sysplex Operator
IBM Parallel Sysplex Top Gun
(425)489-4579 Direct - Home Office
(425)453-5166 x9024 Voice Mail
(425)486-4501 Home
(888)505-4534 Pager
Monteleone <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port <[EMAIL PROTECTED]>
10/25/2002 08:22 AM
Please respond to Linux on 390 Port
To: [EMAIL PROTECTED]
cc:
Subject: RE : Installing Linux/390 on a 9672 R14...
I use three LPAR native on a 9672 R14 without problem.
Have a look www.muvrini.com
Gerard MONTELEONE
Ingenieur Systeme & Reseau
( 04.95.23.68.09 / 06.87.72.70.32
S.I.T.E.C zi du Vazzio
20090 AJACCIO Cedex
-----Message d'origine-----
De�: Linux on 390 Port [mailto:LINUX-390@;VM.MARIST.EDU] De la part de
Adam Thornton
Envoy�: vendredi 25 octobre 2002 15:50
��: [EMAIL PROTECTED]
Objet�: Re: Installing Linux/390 on a 9672 R14...
On Fri, Oct 25, 2002 at 08:23:27AM -0500, McKown, John wrote:
> All the Linux/390 versions out there require a Generation 5 (-Rx6),
> Generation 6 (-Rx7), or zArchitecture machine (z/800 or z/900). The
older
> generation 3 machines, which is what a -R14 is, do not have all the
new
> hardware instructions needed to run Linux/390.
>
This is untrue.
Linux will run just fine on G3s and G2s with the Halfword Immediate
instructions--my P/390, a G2 machine, is perfectly capable of running
Linux.
IBM will, however, not support Linux in such a configuration. There are
organizations that sell Linux support for these configurations,
however. One thing to be aware of is that you do not get hardware IEEE
floating point. Thus any Linux program that uses floating point support
will be very slow, as it will have to go through the kernel emulation
layer to do IEEE floating point. This is why, in my famous "cough
syrup" benchmark, I found out just how painfully slow perl was on a
P/390.
Adam
