[Discuss] RHEL on intel/Xeon, vs. RHEL on Mainframe "Z Linux"

[Jerry Feldman]

You will not have any binary compatibility between Intel and zLinux on
is non-existent. Are you going to run Linux native or in a virtual
environment. AFIK, the IFL facility uses native code, not Intel. But,
you have a lot of performance and flexibility as you can run up to 1000
VMs. Unfortunately I don't know anyone here who is running zLinux, but I
can inquire. remember that IBM has had virtualization on its mainframes
going back to the 1960s, and have some firmware support.

On 03/19/2014 10:33 AM, Jim Gasek wrote:
> BLU Discuss folks:
>
> I have an application that I administer on RHEL 5.5.
>
> I will be moving to 6.x, hopefully soon. 
>
> It has been suggested that I consider moving it to the
> mainframe, via RHEL for mainframe:
>
> http://www.redhat.com/products/enterprise-linux/for-ibm-system-z/
>
> What are the considerations for determining if my app will run
> seamlessly on the mainframe RHEL?
>
> "Porting" considerations?   Binary compatibility?
> Libraries, compilers, ......
>
> Perhaps there are additional "utilities" to take advantage of 
> advanced features of the mainframe acrhitecture?
>
> I know that in Intel architecture, there are certain "OpCodes",
> or "functions of the chip", which are "taken advantage of",
> as they become available, in more modern chips.   A compilation
> of code would be tweaked to squeeze out maximum performance of
> functions available on that chip/architecture.
>
> Thanks in advance for your expertise.
>
> Thanks,
> Jim Gasek
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>

-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix
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