[ncl-install] NCL conda for OSX-Arm64

[Ted Mansell - NOAA Federal]

Luis,

You can try a precompiled binary from https://www.earthsystemgrid.org/dataset/ncl.html and run in rosetta2. The old 6.0.0 seems to work for me, but I haven't tested it too much. The last version there (6.6.2) fails because it is not fully static and needs specific dynamic libraries for x86 (libomp, libgfortran.4). Somewhere in between may work, as well. I don't know if the homebrew install works on M1 -- I suspect not unless it installs x86 libs as well (It just downloads the 6.6.2 binary). There are gfortran binaries for x86 at https://hpc.sourceforge.net that should have those libs.

Or there may well be another solution. The time I have spent on it has been to try to compile from scratch. The ncarg libraries can compile and work on M1, but I haven't gotten a working ncl (it builds but has a seg fault when it runs). I opened a github pull request to try to get some help to move that along. Unfortunately it is legacy software without any support.

cheers,
-- Ted

___________________________________________________
| Edward Mansell (he/him/his) <ted.mansell at noaa.gov>
| National Severe Storms Laboratory
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| Norman, OK 73072
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> On Oct 10, 2022, at 10:43 AM, Luis Cesáreo Cana Cascallar via ncl-install <ncl-install at mailman.ucar.edu> wrote:
> 
> Hi all,
> I’m trying to install ncl in a MBP with the latest arm64 processor (M2). I’ve tried all possible tricks to install it, including the following:
>  
> conda install -c conda-forge ncl 
> conda install -c "conda-forge/label/broken" ncl 
> conda install -c "conda-forge/label/cf201901" ncl 
> conda install -c "conda-forge/label/cf202003" ncl 
> conda install -c "conda-forge/label/dev" ncl
>  
> without success (PackagesNotFoundError: The following packages are not available from current channels)
>  
> Are there plans to build a last version for arm64? If not, should we move to the python environment?
> Best,
> Luis
>  
> Luis C Cana Cascallar 
> Profesor Titular / Senior Lecturer
> 
> Departamento de Física
> Universidad de Las Palmas de Gran Canaria
>  
> tel. 928454523
> luis.cana at ulpgc.es
> www.ulpgc.es
> ORCID 0000-0001-6006-5488
> 
>  
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