Set TORCH_CUDA_ARCH_LIST=8.0;8.6+PTX

[weiji14]

Compile for CUDA compatibility 8.0 and above (Ampere generation or newer), continuing on work from conda-forge/staged-recipes#26239 (comment)

Note that build number is kept at 0, since the initial commit's (c75ac8e) build failed due to Azure pipelines running out of disk space.

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.

Continuing from conda-forge/staged-recipes#26239

[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.

[weiji14]

@conda-forge-admin, please rerender

[carterbox]

Probably, there isn't enough time on Azure to complete these builds. If it does build in the 6 hours, great! Let's publish at least one build.

In parallel, if you feel there are significant performance to be gained by building for '8.0,9.0+PTX' or even more archs, then please start doing the steps in this checklist in order to get this feedstock and yourself added to the allowlist for the gpu-long-running runners which have a time limit longer than 6 hours.

[weiji14]

Probably, there isn't enough time on Azure to complete these builds. If it does build in the 6 hours, great! Let's publish at least one build.

So I've tried:

• 8.0;8.6;8.9+PTX at 5c1c507, all builds failed at about the 25/49 mark.
• 8.0;8.6+PTX at 3348c5a. 2 finished on time, 2 builds failed respectively at the 31/49 and 37/49 mark.

In parallel, if you feel there are significant performance to be gained by building for '8.0,9.0+PTX' or even more archs, then please start doing the steps in this checklist in order to get this feedstock and yourself added to the allowlist for the gpu-long-running runners which have a time limit longer than 6 hours.

Oo yes, I was keeping an eye on those, thanks for pointing to the docs! I'll take a look at that.

For now, let's just stick with 8.0+PTX so we have at least one build completed as you said. I'll close this PR, and focus on #2 instead.