AVX512 support by isuruf · Pull Request #439 · conda-forge/tensorflow-feedstock

isuruf · 2025-08-04T16:49:15Z

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-admin · 2025-08-04T16:50:46Z

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/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

ℹ️ The recipe is not parsable by parser conda-souschef (grayskull). This parser is not currently used by conda-forge, but may be in the future. We are collecting information to see which recipes are compatible with grayskull.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/16729133202. Examine the logs at this URL for more detail.}

isuruf · 2025-08-04T16:51:00Z

@hmaarrfk can we merge this as well before I make the macOS packages?

hmaarrfk · 2025-08-04T21:30:46Z

Yes ok with me. Please merge when you feel confident.

conda-forge-admin · 2026-02-19T18:34:50Z

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.

…to avx512

conda-forge-admin · 2026-02-19T18:48:27Z

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/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

ℹ️ The recipe is not parsable by parser conda-souschef (grayskull). This parser is not currently used by conda-forge, but may be in the future. We are collecting information to see which recipes are compatible with grayskull.
ℹ️ The recipe is not parsable by parser conda-recipe-manager. The recipe can only be automatically migrated to the new v1 format if it is parseable by conda-recipe-manager.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/22456640361. Examine the logs at this URL for more detail.}

…6.02.19.14.04.59 Other tools: - conda-build 25.9.0 - rattler-build 0.47.1 - rattler-build-conda-compat 1.4.5

h-vetinari · 2026-02-20T08:00:07Z

        - cat test_tensorflow.py     # [unix]
        - run python test_tensorflow.py  # [build_platform == target_platform]
-        - tf_upgrade_v2 --help       # [build_platform == target_platform]
+        - run tf_upgrade_v2 --help       # [build_platform == target_platform]


This didn't fix the test:

/home/conda/feedstock_root/build_artifacts/tensorflow-split_1771543504012/test_tmp/run_test.sh: line 10: run: command not found

While you're debugging, please restrict testing here to one (preferably non-CUDA) build.

h-vetinari · 2026-02-20T08:01:35Z

-      - 12.6
-      - None
-      - 12.8
-      - 12.9


this migrator should not be deleted, we still need 12.8 here (until 2.20 I guess?); it already has use_local: true so you can simply move 12.9 before 12.8 in the ordering here. and a rerender should do the correct thing (== stay on 12.8)

h-vetinari · 2026-02-20T08:03:41Z

As an overall point; not sure if we're doing AVX512 builds anywhere else yet? Are there some benchmarks that we can reference for how much of a win this is over AVX2? Makes a big difference if it's 5% or 50%.

h-vetinari · 2026-02-26T23:25:07Z

While you're debugging, please restrict testing here to one (preferably non-CUDA) build.

This is not a difficult demand. I'm cancelling the builds.

isuruf · 2026-02-26T23:42:51Z

I skipped level=1, but since level=3 and level=4 failed and cuda vs non-cuda failed with different errors, I wanted to check all 4 builds.

h-vetinari · 2026-02-26T23:52:15Z

We have a pending pytorch merge that fixes several issues, which is IMO pretty self-evidently of higher priority than debugging work, especially for features rather than fixes. The PR here would block the server for 8-12h as-is, which I think is not reasonable under the circumstances. Though you should be able to run them in parallel if you're willing to try the cirrus setup from conda-forge/pytorch-cpu-feedstock#484

h-vetinari · 2026-03-01T21:36:25Z

I had restarted all builds here as soon as runners became available again ~36h ago, but the interface with cirun is pretty fragile these days, and only one job started. The only recovery is to cancel and restart, but since the GH UI has no third way between "restart all failed jobs" and "restart one job", the former would have meant rerunning the just-failed job again. In any case, all the last of the 4 jobs whose output you wanted to see has now been started, 3 are done already.

isuruf · 2026-03-06T21:19:57Z

Moved some fixes from this PR to #477

AVX512 support

1fabb2a

isuruf requested review from FarhanTejani, ghego, h-vetinari, hajapy, hmaarrfk, jschueller, ngam, njzjz, waitingkuo, wolfv and xhochy as code owners August 4, 2025 16:49

build executables and externals with v3

9c98b11

Merge branch 'main' of github.com:conda-forge/tensorflow-feedstock in…

400a5b0

…to avx512

isuruf added 4 commits February 19, 2026 19:07

MNT: Re-rendered with conda-smithy 3.55.1 and conda-forge-pinning 202…

03ac273

…6.02.19.14.04.59 Other tools: - conda-build 25.9.0 - rattler-build 0.47.1 - rattler-build-conda-compat 1.4.5

remove 12.8 migrator

9dd1207

commit removal

a784d8d

fix test

8f97d7f

h-vetinari reviewed Feb 20, 2026

View reviewed changes

isuruf added 3 commits February 26, 2026 18:54

fix emulation

083c4f4

remove tensorflow-estimator

a395376

skip level = 1

18d3f1e

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