[Opm] Dropping DUNE 2.6 support for OPM 2022.10?

[Bård Skaflestad]

Hi,

As Arne Morten Kvarving remarks the GCC 9.x system compiler on Ubuntu 20.04 LTS is absolutely able to build OPM.  I too use that setup multiple times a day.  Do also keep in mind that the project's stated policy is to support the latest two long-term support versions of Ubuntu which, at the time of writing, is 20.04 LTS (Dune 2.6) and 22.04 LTS (Dune 2.8).  In my opinion it is bringing more recent versions of Dune into the mix that will create an undue maintenance burden.


Best Regards,

Bård Skaflestad
SINTEF Digital, Mathematics & Cybernetics
Computational Geosciences group

-----Original Message-----
From: Opm <opm-bounces at opm-project.org> On Behalf Of Markus Blatt
Sent: Friday, September 30, 2022 3:10 PM
To: opm at opm-project.org
Subject: [Opm] Dropping DUNE 2.6 support for OPM 2022.10?

Hi,

I think until recently we still aimed to support DUNE 2.6 (for reasons not 100% obvious to me). With the advent of DUNE 2.9 next month that would mean supporting 4 versions. That seems IMHO like a monstruous tasks.
Historically we always aimed to support at least 2 recent versions, which seems to make sense.

Hence my question is what versions we actually should support for the next release.

In my humble opinion we should drop support for 2.6. While this is the version in Ubuntu 20.04 LTS, the compiler on that system does not allow compilation of OPM
  The next version 2.7 is still in Debian stable, Ubuntu impish 21.10 and we probably should support that one.

Cheers,

Markus
-- 

Markus Blatt
CEO @ OPM-OP AS, Heyerdahlsvei 12b, 0777 Oslo, Norway
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