Release Go Live Binary Build Matrix

Release Go-Live: Binary Build Matrix

Updates tools/scripts/generate_binary_build_matrix.py and the associated test fixtures when a PyTorch release goes live. This mirrors prior PRs such as:

• Release 2.10 go live. Update release matrix (#7668)
• Release 2.11 promotion script changes (#7868)
• Release 2.12 go live. Update release matrix (#8070)

When to use this skill

Use when the user asks to:

• Advance stable version to X.Y.0 in the binary build matrix
• Promote release CUDA/ROCm arches now that release X.Y is going live
• Update generate_binary_build_matrix.py for a new PyTorch release
• Do "release go live" changes

Target files

| File | Why |

|------|-----|

| tools/scripts/generate_binary_build_matrix.py | Source of truth for version + channel arches |

| tools/tests/assets/build_matrix_*.json | Snapshot fixtures (compact JSON, must match script output) |

| tools/tests/update_test_assets.sh | Regeneration script (canonical) |

| tools/tests/test_generate_binary_build_matrix.py | Test runner |

Instructions

Step 1: Determine the new stable version

Ask the user (if not clear) what version is going live (e.g. 2.12.0). The current state usually looks like:

CURRENT_NIGHTLY_VERSION = "2.13.0"
CURRENT_CANDIDATE_VERSION = "2.12.0"   # about to become stable
CURRENT_STABLE_VERSION   = "2.11.0"    # being replaced

So a "2.12 go live" advances CURRENT_STABLE_VERSION to match CURRENT_CANDIDATE_VERSION. Do NOT touch CURRENT_NIGHTLY_VERSION or CURRENT_CANDIDATE_VERSION in this PR — those are advanced by separate PRs (e.g. Update nightly version to X.Y.Z, [Release X.Y] advance candidate version).

Step 2: Advance CURRENT_STABLE_VERSION

In tools/scripts/generate_binary_build_matrix.py, change the single line:

CURRENT_STABLE_VERSION = "<old>"

to the new stable version.

Step 3: Promote release-channel arches to match test

Compare the three channels in each arches dict:

CUDA_ARCHES_DICT = {
    "nightly": [...],
    "test":    [...],
    "release": [...],   # promote this to match "test"
}

ROCM_ARCHES_DICT = {
    "nightly": [...],
    "test":    [...],
    "release": [...],   # promote this to match "test"
}

If release differs from test, update release to match test. This is the actual "what CUDA/ROCm versions ship with this release" decision — the candidate-channel arches that survived the release cycle become the official release arches.

Also check STABLE_CUDA_VERSIONS — usually already aligned across channels, but verify all three entries point at the same default for the new release.

Step 4: Regenerate test fixtures (MUST use the shell script)

The fixtures are compact (single-line) JSON. The script tools/tests/update_test_assets.sh is the canonical regenerator. Do NOT use python3 -m tools.tests.test_generate_binary_build_matrix --update-reference-files — that pretty-prints with indent=2 and produces a massive churn diff that does not match the file format on main.

Run from the repo root (note the script uses relative paths so cd matters):

cd tools/tests
python3 ../scripts/generate_binary_build_matrix.py --build-python-only disable --with-xpu disable > assets/build_matrix_linux_wheel_cuda.json
python3 ../scripts/generate_binary_build_matrix.py --build-python-only disable --with-rocm disable --with-xpu disable > assets/build_matrix_linux_wheel_cuda_norocm.json
python3 ../scripts/generate_binary_build_matrix.py --build-python-only disable --with-cpu disable --with-xpu disable > assets/build_matrix_linux_wheel_nocpu.json
python3 ../scripts/generate_binary_build_matrix.py --build-python-only disable --with-cpu disable --with-rocm disable --with-xpu enable > assets/build_matrix_linux_wheel_xpu.json
python3 ../scripts/generate_binary_build_matrix.py --build-python-only disable --operating-system="macos" --with-cuda disable --with-rocm disable > assets/build_matrix_macos_wheel.json
python3 ../scripts/generate_binary_build_matrix.py --build-python-only disable --operating-system="windows" > assets/build_matrix_windows_wheel_cuda.json
python3 ../scripts/generate_binary_build_matrix.py --build-python-only disable --with-rocm disable --with-cuda disable --operating-system="windows" > assets/build_matrix_windows_wheel_xpu.json

Skip the conda lines from update_test_assets.sh — --package-type conda is broken on main (noted in PR #8065) and the conda fixtures are no longer maintained.

Step 5: Run tests

python3 -m tools.tests.test_generate_binary_build_matrix

Expected: Ran 7 tests in <time>s OK.

Step 6: Verify the diff is minimal

git diff --stat should show roughly:

• tools/scripts/generate_binary_build_matrix.py: ~4 lines (stable version + release arches list)
• 7 fixture JSON files: 1 line each (single-line files, change is in-place)

Sanity check: the only diff in fixtures should be "stable_version": "<old>" → "stable_version": "<new>". If a fixture has multi-line / pretty-printed diff, you used the wrong regenerator — revert with git checkout upstream/main -- tools/tests/assets/ and re-run Step 4.

If the CUDA release arches changed, expect new entries in fixtures (e.g. new cu132 rows when adding 13.2 to release).

Step 7: Commit and PR

Suggested commit/PR title pattern (matches history):

Release X.Y go live. Update release matrix

PR body should call out:

• Advance CURRENT_STABLE_VERSION from <old> to <new>
• (If applicable) Advance CUDA_ARCHES_DICT["release"] / ROCM_ARCHES_DICT["release"]
• Regenerate test fixtures via tools/tests/update_test_assets.sh

Common pitfalls

• Don't pretty-print fixtures. The --update-reference-files test flag writes indent=2. The fixtures on main are single-line. Always use the shell script approach.
• Don't touch nightly/candidate versions. Those are advanced by separate PRs in the release cycle.
• upstream is pytorch/test-infra. Branch from upstream/main, push to origin (your fork), open the PR against pytorch/test-infra:main.
• Stash unrelated WIP. generate_binary_build_matrix.py changes should go in a clean branch off upstream/main — don't pile them onto an unrelated feature branch.