RedHat 9.0 & GPU14 heads up

[Predrag Punosevac]

Dear Autonians,

After some delay due to the conference deadlines, GPU14 is finally
reprovisioned to run RHEL 9. According to my limited testing, things appear
to work as expected. Please log into GPU14 and test extensively. If this
turns out to be a truly working configuration, Piotr Bartosiewicz and I
will reprovision all existing RHEL 7 computing nodes with RHEL 9.

Best,

Predrag

On Tue, Sep 27, 2022 at 8:46 PM Predrag Punosevac <predragp at andrew.cmu.edu>
wrote:

> Dear Autonians,
>
> The short version of this email is that I am planning to offline gpu14
> this Thursday in order to upgrade from RHEL 7.9 to recently released RHEL
> 9.0. The GPU node is currently idle. Please don't start jobs as you will
> lose them.
>
> If you have 10 minutes, the long version of this email reads:
>
>
> It has been brought to my attention that some lab members are running into
> a problem with glibc library version 2.28 shipped with RHEL 8.6. Currently,
> about 50% of our computing nodes run an even older version of RHEL 7.9
> which is shipped with 2.17.
>
> RHEL 9.0 was released less than half a year ago. It is shipped with glibc
> 2.34. GCC 11.2.1 and binutils 2.35.2. The default Python version is 3.9.
> The common wisdom is to hold any upgrades until 9.1 release. Due to my
> personal connection with the Springdale community (Princeton university),
> which provides us with a free clone of RHEL, I know that 9.0 us production
> ready. I have already checked the NVidia/CUDA stack and RPMs are built.
> Therefore, I decided to schedule an experiment and to try to upgrade gpu14
> to RHEL 9.0. If the experiment is successful,  Piotr Bartosiewicz and I
> will upgrade all computing nodes currently running RHEL 7.9 to 9.0 release.
> Computing nodes and all workstations currently running 8.6 will not be
> touched to maintain the usability of the system.
>
> Ubuntu fans should be aware that  22.04 is shipped with glibc 2.35 but GCC
> and many other things a minor point releases behind RHEL 9.0. The last time
> I looked, CS CMU facilities were upgrading all desktops to Ubuntu 20.04
> from 18.04 and earlier. CMU CS facilities don't run Ubuntu on servers and
> they are still in crisis mode due to unanticipated termination of the
> CentOS clone of RHEL 8.xxx. The last time I talked to Ed Walter they were
> running Cent/RHEL 7.9 and thinking about what to do next (Alma Linux, Rocky
> Linux as well as what to do with obsolete ROCKS clusters). I did my best to
> spare you from those things.
>
> Cheers,
> Predrag
>
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