adding Adios2 io support

[seegyoung]

• support for serial adios2 file I/O (set Omega_h_USE_ADIOS2 ON)
• MPI only with single process at the moment
• testing with kokkos and coda not included

[jacobmerson]

/runtests

[github-actions]

Test Result: failure (details)

[jacobmerson]

Hi Seegyoung, from what I see so far it looks like things are on the right track.

However, it seems like there are some missing files in your commit. I don't see the Omega_h_adios2.hpp file, or where the write_adios2 code is located.

[cwsmith]

Thank you @seegyoung. Looks good.

If it isn't there already, and while partitioned mesh support is under development, we should add a check to the adios writer and reader to ensure that the mesh is serial.

[seegyoung]

I will update based on all the input from both of you.

[jacobmerson]

@seegyoung I still don't see the definitions for write_value and read_value for adios2.

[seegyoung]

Sorry about the trouble - missing files are added

[cwsmith]

@seegyoung Would you please remove the romulus-config.sh file? We maintain build instructions for various systems in the wiki: https://github.com/SCOREC/omega_h/wiki

[seegyoung]

OK I will do.

[jacobmerson]

Hi Seegyoung, did you have a chance to address the comments from Cameron and I?

[seegyoung]

Yes, it was removed on September 17th. Thanks for checking with me.

[jacobmerson]

@seegyoung can you update this pull request with your changes? I do not see the requested updates.

[seegyoung]

I am not good at GitHub so I don't know what to do to resolve the issue and what's the source of the issue. Can someone can do this for me please?

[cwsmith]

If you have changes that are committed into your local copy of the branch (i.e., on the SCOREC filesystem) you can run 'git push' to upload them to github. This PR will automatically be updated.

I'm available to discuss via WebEx if needed. Please send me an email and we can pick a time.

[jacobmerson]

@seegyoung i have added additional comments. Please address them and update this pull request.