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[torch] Enable stable torch 2.9 builds on Windows and update docs (#1809)
## Motivation Fixes #1677, filling in the latest support matrix for supported PyTorch versions for our nightly release builds. I also took the opportunity to clarify and refresh the documentation. ## Technical Details For now this uses `release/2.9_rocm7.9`. Depends on ROCm/pytorch#2712 to use `release/2.9`. ## Test Plan Trigger test release builds using https://github.com/ROCm/TheRock/actions/workflows/release_windows_pytorch_wheels.yml - [ ] Test `release/2.9` once that PR is merged - [x] Test `release/2.9_rocm7.9`: https://github.com/ROCm/TheRock/actions/runs/18598633844 ## Test Results Test release builds completed and sanity checks passed.
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‎.github/workflows/release_portable_linux_pytorch_wheels.yml‎

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include:
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- pytorch_version: release/2.7
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pytorch_patchset: rocm_2.7
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# - pytorch_version: release/2.8
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# pytorch_patchset: rocm_2.8
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- pytorch_version: release/2.9
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pytorch_patchset: rocm_2.9
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- pytorch_version: nightly

‎.github/workflows/release_windows_pytorch_wheels.yml‎

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fail-fast: false
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matrix:
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python_version: ["3.11", "3.12", "3.13"]
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# TODO(#1677): Get 2.9 build working and enable it
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# pytorch_version: ["release/2.9", "nightly"]
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pytorch_version: ["nightly"]
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# TODO(#1677): use release/2.9 (common branch) instead of release/2.9_rocm7.9
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# once https://github.com/ROCm/pytorch/pull/2712 cherry-picks are merged
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pytorch_version: ["release/2.9_rocm7.9", "nightly"]
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include:
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# TODO(#1677): Get 2.9 builds working and enable them
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# - pytorch_version: release/2.9
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# pytorch_patchset: rocm_2.9
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- pytorch_version: release/2.9_rocm7.9
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pytorch_patchset: rocm_2.9
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- pytorch_version: nightly
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pytorch_patchset: nightly
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‎external-builds/pytorch/README.md‎

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### Project and feature support status
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<!-- TODO: Add when aotriton was enabled on Windows (2.10) -->
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| Project / feature | Linux support | Windows support |
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| ------------------------------ | ----------------------------------------------------------------------------------------------------------------------------- | --------------- |
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| torch | ✅ Supported | ✅ Supported |
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| torchaudio | ✅ Supported | ✅ Supported |
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| torchvision | ✅ Supported | ✅ Supported |
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| Flash attention via [ao]triton | ✅ Supported for torch < 2.10<br>❌ Disabled for torch ≥ 2.10 (see [Issue#1408](https://github.com/ROCm/TheRock/issues/1408)) | ✅ Supported |
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| Project / feature | Linux support | Windows support |
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| ------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- |
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| torch | ✅ Supported | ✅ Supported |
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| torchaudio | ✅ Supported | ✅ Supported |
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| torchvision | ✅ Supported | ✅ Supported |
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| Flash attention via [ao]triton | ✅ Supported for torch 2.7<br>❌ Not yet supported for newer versions (see [Issue#1408](https://github.com/ROCm/TheRock/issues/1408)) | ✅ Supported since torch 2.9 |
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### Supported PyTorch versions
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We support building ROCm source and nightly releases together with several
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different PyTorch versions. The intent is to support the latest upstream PyTorch
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code (i.e. `main` or `nightly`) as well as recently published release branches
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which users depend on. Developers can also build variations of these versions to
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suite their own requirements.
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We support building various PyTorch versions compatible with the latest ROCm
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sources and release packages.
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Support for the latest upstream PyTorch code (i.e. `main` or `nightly`) uses the
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upstream projects directly, while extended support for older releases is maintained
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via backported release branches in https://github.com/ROCm/pytorch. Developers can
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also build variations of these versions to suite their own requirements.
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> [!NOTE]
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> We build "nightly" versions with alpha suffixes. Once
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> PyTorch promotes a new release version, we switch from the upstream branches
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> to the backported release branches in https://github.com/ROCm/pytorch without
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> such version suffixes (e.g. `2.7.0a0`-> `2.7.1`).
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>
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> Historical builds are archived at https://rocm.nightlies.amd.com according to
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> some retention policy.
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Each PyTorch version uses a combination of:
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- Git repository URLs for each project
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- Git "repo hashtags" (branch names, tag names, or commit refs) for each project
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- Optional patches to be applied on top of a git checkout
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See the following table for how each version is supported. Previously supported
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versions are no longer being built but may have existing wheels in the
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[nightly build repo](https://rocm.nightlies.amd.com/v2/).
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<!-- TODO: update this support table once we publish 2.9 stable for Linux and Windows -->
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See the following table for how each version is supported:
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| PyTorch version | Linux | Windows |
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| -------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| nightly (2.10 alpha) | ✅ Using upstream pytorch<br><ul><li>[pytorch/pytorch `nightly` branch](https://github.com/pytorch/pytorch/tree/nightly)<ul><li>[ROCm/triton](https://github.com/ROCm/triton) - [`ci_commit_pins/triton.txt`](https://github.com/pytorch/pytorch/blob/nightly/.ci/docker/ci_commit_pins/triton.txt)</li></ul></li><li>[pytorch/audio `nightly` branch](https://github.com/pytorch/audio/tree/nightly)</li><li>[pytorch/vision `nightly` branch](https://github.com/pytorch/vision/tree/nightly)</li></ul> | ✅ Using upstream pytorch<br><ul><li>[pytorch/pytorch `nightly` branch](https://github.com/pytorch/pytorch/tree/nightly)</li><li>[pytorch/audio `nightly` branch](https://github.com/pytorch/audio/tree/nightly)</li><li>[pytorch/vision `nightly` branch](https://github.com/pytorch/vision/tree/nightly)</li></ul> |
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| 2.9 alpha | Previously supported | Previously supported |
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| 2.8 | Unsupported | Unsupported |
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| 2.7 | ✅ Using downstream ROCm/pytorch fork<br><ul><li>[ROCm/pytorch `release/2.7` branch](https://github.com/ROCm/pytorch/tree/release/2.7)<ul><li>[ROCm/triton](https://github.com/ROCm/triton) - [`ci_commit_pins/triton.txt`](https://github.com/ROCm/pytorch/blob/release/2.7/.ci/docker/ci_commit_pins/triton.txt)</li></ul></li><li>[pytorch/audio](https://github/com/pytorch/audio) - ["rocm related commit"](https://github.com/ROCm/pytorch/blob/release/2.7/related_commits)</li><li>[pytorch/vision](https://github/com/pytorch/vision) - ["rocm related commit"](https://github.com/ROCm/pytorch/blob/release/2.7/related_commits)</li></ul> | Unsupported |
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| PyTorch version | Linux | Windows |
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| --------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| 2.10 alpha | ✅ Using upstream pytorch<br><ul><li>[pytorch/pytorch `nightly` branch](https://github.com/pytorch/pytorch/tree/nightly)<ul><li>[ROCm/triton](https://github.com/ROCm/triton) - [`ci_commit_pins/triton.txt`](https://github.com/pytorch/pytorch/blob/nightly/.ci/docker/ci_commit_pins/triton.txt)</li></ul></li><li>[pytorch/audio `nightly` branch](https://github.com/pytorch/audio/tree/nightly)</li><li>[pytorch/vision `nightly` branch](https://github.com/pytorch/vision/tree/nightly)</li></ul> | ✅ Using upstream pytorch<br><ul><li>[pytorch/pytorch `nightly` branch](https://github.com/pytorch/pytorch/tree/nightly)</li><li>[pytorch/audio `nightly` branch](https://github.com/pytorch/audio/tree/nightly)</li><li>[pytorch/vision `nightly` branch](https://github.com/pytorch/vision/tree/nightly)</li></ul> |
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| 2.9 | ✅ Using downstream ROCm/pytorch fork<br><ul><li>[ROCm/pytorch `release/2.9` branch](https://github.com/ROCm/pytorch/tree/release/2.9)<ul><li>[ROCm/triton](https://github.com/ROCm/triton) - [`ci_commit_pins/triton.txt`](https://github.com/ROCm/pytorch/blob/release/2.9/.ci/docker/ci_commit_pins/triton.txt)</li></ul></li><li>[pytorch/audio](https://github/com/pytorch/audio) - ["rocm related commit"](https://github.com/ROCm/pytorch/blob/release/2.9/related_commits)</li><li>[pytorch/vision](https://github/com/pytorch/vision) - ["rocm related commit"](https://github.com/ROCm/pytorch/blob/release/2.9/related_commits)</li></ul> | ✅ Using downstream ROCm/pytorch fork<br><ul><li>[ROCm/pytorch `release/2.9_rocm7.9` branch](https://github.com/ROCm/pytorch/tree/release/2.9_rocm7.9)</li><li>[pytorch/audio](https://github/com/pytorch/audio) - ["rocm related commit"](https://github.com/ROCm/pytorch/blob/release/2.9_rocm7.9/related_commits)</li><li>[pytorch/vision](https://github/com/pytorch/vision) - ["rocm related commit"](https://github.com/ROCm/pytorch/blob/release/2.9_rocm7.9/related_commits)</li></ul> |
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| 2.9 alpha | Previously built | Previously built |
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| 2.8 | Unsupported | Unsupported |
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| 2.7 | ✅ Using downstream ROCm/pytorch fork<br><ul><li>[ROCm/pytorch `release/2.7` branch](https://github.com/ROCm/pytorch/tree/release/2.7)<ul><li>[ROCm/triton](https://github.com/ROCm/triton) - [`ci_commit_pins/triton.txt`](https://github.com/ROCm/pytorch/blob/release/2.7/.ci/docker/ci_commit_pins/triton.txt)</li></ul></li><li>[pytorch/audio](https://github/com/pytorch/audio) - ["rocm related commit"](https://github.com/ROCm/pytorch/blob/release/2.7/related_commits)</li><li>[pytorch/vision](https://github/com/pytorch/vision) - ["rocm related commit"](https://github.com/ROCm/pytorch/blob/release/2.7/related_commits)</li></ul> | Unsupported |
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See also:
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