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Merged
danieldk merged 2 commits into from
Feb 17, 2026
Merged

Fix aarch64-linux and add it to CI #286

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756a87f
CI: run builder tests on AArch64
danieldk Feb 16, 2026
4158046
builder: fix aarch64 support
danieldk Feb 17, 2026
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29 changes: 18 additions & 11 deletions .github/workflows/build_kernel.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,16 @@ on:

jobs:
build:
name: Build kernels
name: Build kernels (${{ matrix.arch }})
strategy:
matrix:
include:
- arch: x86_64-linux
runner: aws-highmemory-32-plus-nix
- arch: aarch64-linux
runner: aws-r8g-8xl-plus-nix
runs-on:
group: aws-highmemory-32-plus-nix
group: ${{ matrix.runner }}
steps:
- uses: actions/checkout@v6
- uses: DeterminateSystems/nix-installer-action@main
Expand All @@ -30,27 +37,27 @@ jobs:
run: nix-shell -p nix-info --run "nix-info -m"

- name: Build relu kernel
run: ( cd builder/examples/relu && nix build .\#redistributable.torch29-cxx11-cu126-x86_64-linux )
run: ( cd builder/examples/relu && nix build .\#redistributable.torch29-cxx11-cu126-${{ matrix.arch }} )
- name: Copy relu kernel
run: cp -rL builder/examples/relu/result relu-kernel

- name: Build extra-data kernel
run: ( cd builder/examples/extra-data && nix build .\#redistributable.torch29-cxx11-cu126-x86_64-linux )
run: ( cd builder/examples/extra-data && nix build .\#redistributable.torch29-cxx11-cu126-${{ matrix.arch }} )
- name: Copy extra-data kernel
run: cp -rL builder/examples/extra-data/result extra-data

- name: Build relu kernel (CPU)
run: ( cd builder/examples/relu && nix build .\#redistributable.torch29-cxx11-cpu-x86_64-linux )
run: ( cd builder/examples/relu && nix build .\#redistributable.torch29-cxx11-cpu-${{ matrix.arch }} )
- name: Copy relu kernel (CPU)
run: cp -rL builder/examples/relu/result relu-kernel-cpu

- name: Build cutlass GEMM kernel
run: ( cd builder/examples/cutlass-gemm && nix build .\#redistributable.torch29-cxx11-cu126-x86_64-linux )
run: ( cd builder/examples/cutlass-gemm && nix build .\#redistributable.torch29-cxx11-cu126-${{ matrix.arch }} )
- name: Copy cutlass GEMM kernel
run: cp -rL builder/examples/cutlass-gemm/result cutlass-gemm-kernel

- name: Build relu-backprop-compile kernel
run: ( cd builder/examples/relu-backprop-compile && nix build .\#redistributable.torch29-cxx11-cu126-x86_64-linux )
run: ( cd builder/examples/relu-backprop-compile && nix build .\#redistributable.torch29-cxx11-cu126-${{ matrix.arch }} )
- name: Copy relu-backprop-compile kernel
run: cp -rL builder/examples/relu-backprop-compile/result relu-backprop-compile-kernel

Expand All @@ -59,10 +66,10 @@ jobs:
run: ( cd builder/examples/relu-specific-torch && nix build . )

- name: Build relu kernel (compiler flags)
run: ( cd builder/examples/relu-compiler-flags && nix build .\#redistributable.torch29-cxx11-cu126-x86_64-linux )
run: ( cd builder/examples/relu-compiler-flags && nix build .\#redistributable.torch29-cxx11-cu126-${{ matrix.arch }} )

- name: Test that we can build a test shell (e.g. that gcc corresponds to CUDA-required)
run: ( cd builder/examples/relu && nix build .#devShells.x86_64-linux.test )
run: ( cd builder/examples/relu && nix build .#devShells.${{ matrix.arch }}.test )

- name: Build silu-and-mul kernel
run: ( cd builder/examples/silu-and-mul && nix build .\#redistributable.torch-cuda )
Expand All @@ -72,7 +79,7 @@ jobs:
- name: Upload kernel artifacts
uses: actions/upload-artifact@v6
with:
name: built-kernels
name: built-kernels-${{ matrix.arch }}
path: |
activation-kernel
cutlass-gemm-kernel
Expand All @@ -93,7 +100,7 @@ jobs:
- name: Download kernel artifacts
uses: actions/download-artifact@v7
with:
name: built-kernels
name: built-kernels-x86_64-linux
path: .

- name: Set up Docker Buildx
Expand Down
15 changes: 12 additions & 3 deletions nix/pkgs/python-modules/cuda-bindings/default.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,10 @@ let
let
cuda_12 = {
version = "12.9.4";
hash = "sha256-Mr3Fp2kGvkxh65j1RqZ4bFdzqIHzsWZIZEm10UHko58=";
hash = {
x86_64-linux = "sha256-Mr3Fp2kGvkxh65j1RqZ4bFdzqIHzsWZIZEm10UHko58=";
aarch64-linux = "sha256-z4v67cI487EV2VfR/WVit+hDW6V/bQ4vh9DnFJzLLaU=";
};
};
in
{
Expand All @@ -27,14 +30,20 @@ let
"12.9" = cuda_12;
"13.0" = {
version = "13.0.3";
hash = "sha256-US0NgDpeR6ikLVo0zgkygCv3L+lS/bEax5hxWjXG5cs=";
hash = {
x86_64-linux = "sha256-US0NgDpeR6ikLVo0zgkygCv3L+lS/bEax5hxWjXG5cs=";
aarch64-linux = "sha256-+xan92nJxnRprdeh2fbBTdRGN/aSHLa564LLUBWzXD0=";
};
};
};

versionHash =
versionHashes.${cudaPackages.cudaMajorMinorVersion}
or (throw "Unsupported CUDA version: ${cudaPackages.cudaMajorMinorVersion}");
inherit (versionHash) hash version;
inherit (versionHash) version;
hash =
versionHash.hash.${stdenv.hostPlatform.system}
or (throw "No hash defined for system: ${stdenv.hostPlatform.system}");

format = "wheel";
pyShortVersion = "cp" + builtins.replaceStrings [ "." ] [ "" ] python.pythonVersion;
Expand Down
5 changes: 5 additions & 0 deletions nix/pkgs/python-modules/torch/binary/torch-versions-hash.json
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Expand Up @@ -116,6 +116,11 @@
"hash": "sha256-vbzHAzgvlI6VHAY0SMlAa/OM5mxB3WmNnicz/PlsA3o=",
"version": "2.10.0"
},
"cu130": {
"url": "https://download.pytorch.org/whl/cu130/torch-2.10.0%2Bcu130-cp313-cp313-manylinux_2_28_aarch64.whl",
"hash": "sha256-dXgCgzCN+f7eNx7toB6WB8iGKhgDovLzGgiiwN6u00I=",
"version": "2.10.0"
},
"cpu": {
"url": "https://download.pytorch.org/whl/cpu/torch-2.10.0%2Bcpu-cp313-cp313-manylinux_2_28_aarch64.whl",
"hash": "sha256-5RmUSSzbdu3OKdqI3jZyowIvnvD/2QNFQ2lI1Jkr4sc=",
Expand Down
2 changes: 1 addition & 1 deletion nix/pkgs/python-modules/torch/binary/torch-versions.json
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Expand Up @@ -53,7 +53,7 @@
{
"torchVersion": "2.10.0",
"cudaVersion": "13.0",
"systems": ["x86_64-linux"]
"systems": ["x86_64-linux", "aarch64-linux"]
},
{
"torchVersion": "2.10.0",
Expand Down
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