Rebuild for CUDA 12

[regro-cf-autotick-bot]

This PR has been triggered in an effort to update cuda120.

Notes and instructions for merging this PR:

1. Please merge the PR only after the tests have passed.
2. Feel free to push to the bot's branch to update this PR if needed.

Please note that if you close this PR we presume that the feedstock has been rebuilt, so if you are going to perform the rebuild yourself don't close this PR until the your rebuild has been merged.

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Here are some more details about this specific migrator:

The transition to CUDA 12 SDK includes new packages for all CUDA libraries and build tools. Notably, the cudatoolkit package no longer exists, and packages should depend directly on the specific CUDA libraries (libcublas, libcusolver, etc) as needed. For an in-depth overview of the changes and to report problems see this issue. Please feel free to raise any issues encountered there. Thank you! 🙏

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If this PR was opened in error or needs to be updated please add the bot-rerun label to this PR. The bot will close this PR and schedule another one. If you do not have permissions to add this label, you can use the phrase @conda-forge-admin, please rerun bot in a PR comment to have the conda-forge-admin add it for you.

_{This PR was created by the regro-cf-autotick-bot. The regro-cf-autotick-bot is a service to automatically track the dependency graph, migrate packages, and propose package version updates for conda-forge. Feel free to drop us a line if there are any issues! This PR was generated by https://github.com/regro/cf-scripts/actions/runs/5153250899, please use this URL for debugging.}

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[jakirkham]

Seeing the following error on CI:

CMake Error at CMakeLists.txt:263 (target_link_libraries):
  Target "katago" links to:

    CUDA::cublas

  but the target was not found.

As the new CUDA 12 packages split all these components up ( conda-forge/staged-recipes#21382 ), think we need to add libcublas-dev to host:

  host:
    - libcublas-dev      # [(cuda_compiler_version or "").startswith("12")]

Note that *-dev suffixed packages have headers and dynamic libraries. They add the * package (no -dev suffix) to run automatically via run_exports

Edit: For more info about the CUDA 12 bringup, please see issue ( conda-forge/conda-forge.github.io#1963 )

[jakirkham]

Looks like the build is running into an error trying to use compute_35 with CUDA 12 on CI, which is an unsupported architecture for CUDA 12

nvcc fatal   : Unsupported gpu architecture 'compute_35'

Appears related to upstream issue ( lightvector/KataGo#725 )

[hadim]

Thanks for looking into it @jakirkham. It looks like there is not much to-do here besides waiting for upstream.

[jakirkham]

Might be worth asking upstream if there is an update. That issue hasn't been touched for a while. Perhaps they can advise a path forward (like some kind of workaround)

[jakirkham]

Converting to draft while we wait for an upstream update

[jakirkham]

Think we may be able to bypass this issue by specifying the GPU architectures to use

Would suggest borrowing this logic to specify the GPU architectures via the CMake respected CUDAARCHS environment variable. Here's some more details on how it works

[regro-cf-autotick-bot]

Due to the bot-rerun label I'm closing this PR. I will make another one as appropriate. This was generated by https://github.com/regro/cf-scripts/actions/runs/5968502524

[jakirkham]

Superseded by PR: #6