Add an extension for oneAPI.jl

[amontoison]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.43%. Comparing base (f980890) to head (9105536).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #476      +/-   ##
==========================================
- Coverage   84.14%   74.43%   -9.71%     
==========================================
  Files          52       52              
  Lines        4674     4671       -3     
==========================================
- Hits         3933     3477     -456     
- Misses        741     1194     +453     

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[sshin23]

@amontoison I'm starting to realize that there is quite a lot of redundant code between LapackCPU vs cuSOLVER vs rocSOLVER, etc. Wouldn't there be a better way?

[amontoison]

I think we can rely more on multiple dispatch. I can propose a unified API next week.

The extension of oneAPI.jl is more a proof of concept than anything else because many things are still unstable in oneAPI.jl, but @michel2323 is officially working on it now!

[michel2323]

Should we add an Intel GPU runner?

[michel2323]

ERROR: LoadError: UndefVarError: `oneSparseMatrixCSC` not defined in `oneAPI.oneMKL . Intel not like CSC.

[sshin23]

@michel2323, we don't have an Intel runner. Could you add one?

[michel2323]

Added oneAPI runner. @amontoison I forgot again how to resolve the CSR/CSC issue.

[amontoison]

@michel2323 Add a CSC format in oneAPI.jl and use the relation between CSC / CSR to interface operations like mul!.

[michel2323]

@amontoison I'm hitting now a findall(::oneArray in MadNLP, which is not supported in oneAPI.jl. While trying to implement that I've hit some indexing issue. I'm confident though that can be resolved.

[github-actions]

Your PR no longer requires formatting changes. Thank you for your contribution!

[michel2323]

@sshin23 After this, I can take care of making CUDA a MadNLPGPU extension too and try to consolidate the code for all three backends.

[amontoison]

@michel2323
A file oneapi_qn.jl is missing in the extension.
Do you have an idea why the tests are failing?

[michel2323]

Because I forgot to commit the file 💩.