Enable microarchitecture-optimized builds

[traversaro]

As documented in https://conda-forge.org/docs/maintainer/knowledge_base/#microarch .
Fix #38 .

xref: conda-forge/conda-forge.github.io#1261

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[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.

[traversaro]

@conda-forge-admin, please rerender

[github-actions]

Hi! This is the friendly automated conda-forge-webservice.

I tried to rerender for you, but it looks like there was nothing to do.

This message was generated by GitHub actions workflow run https://github.com/conda-forge/mujoco-feedstock/actions/runs/8217667360.

[traversaro]

@conda-forge-admin, please rerender

[traversaro]

Somehow:

  script_env:
    - MUJOCO_ENABLE_AVX=ON  # [unix and x86_64 and (microarch_level == 3 or microarch_level == 4)]
    - MUJOCO_ENABLE_AVX=OFF  # [not (unix and x86_64 and (microarch_level == 3 or microarch_level == 4))]

is not being passed, not sure why. Perhaps they need to be in the output section?

[traversaro]

@conda-forge-admin, please rerender

[traversaro]

Somehow:

  script_env:
    - MUJOCO_ENABLE_AVX=ON  # [unix and x86_64 and (microarch_level == 3 or microarch_level == 4)]
    - MUJOCO_ENABLE_AVX=OFF  # [not (unix and x86_64 and (microarch_level == 3 or microarch_level == 4))]

is not being passed, not sure why. Perhaps they need to be in the output section?

Setting script_env in the build section of the output works, what was confusing is that if script_env was set at global level, you still get the message:

2024-03-10T10:20:57.9234539Z /opt/conda/lib/python3.10/site-packages/conda_build/environ.py:526: UserWarning: The environment variable 'MUJOCO_ENABLE_AVX' is being passed through with value '<hidden>'.  If you are splitting build and test phases with --no-test, please ensure that this value is also set similarly at test time.

but then MUJOCO_ENABLE_AVX was not set.

[conda-forge-webservices]

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

I was trying to look for recipes to lint for you, but it appears we have a merge conflict.
Please try to merge or rebase with the base branch to resolve this conflict.

Please ping the 'conda-forge/core' team (using the @ notation in a comment) if you believe this is a bug.

[traversaro]

Given what is available on CI machine, I reduced the microarch build matrix to:

microarch_level:  # [unix and x86_64]
  - 1  # [unix and x86_64]
  - 3  # [unix and x86_64]
  - 4  # [unix and x86_64]

to

microarch_level:  # [linux and x86_64]
  - 1  # [linux and x86_64]
  - 3  # [linux and x86_64]

Given the limited number of machine available with AVX512, and the limited number of macOS users really focused on performance still on mac Intel, I guess this may be anyhow a sensible tradeoff considering the usage of CI.

[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.

[traversaro]

@conda-forge-admin, please rerender

[traversaro]

Now mamba and micromamba as of 1.5.10 release can install archspec-enabled packages: https://github.com/mamba-org/mamba/releases/tag/2024.09.20, so we may want to proceed on this one.