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build: enable free-threading compatibility #1103

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Merged
merged 3 commits into from
Oct 8, 2025
Merged

build: enable free-threading compatibility #1103

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07a4b19
build: enable free-threading compatibility
cpcloud Oct 8, 2025
3d1f3d1
chore: add ftcompat flag to cython tests
cpcloud Oct 8, 2025
47c13be
build: enable ft compat for all cython tests
cpcloud Oct 8, 2025
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2 changes: 1 addition & 1 deletion cuda_bindings/setup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -329,7 +329,7 @@ def do_cythonize(extensions):
return cythonize(
extensions,
nthreads=nthreads,
compiler_directives=dict(language_level=3, embedsignature=True, binding=True),
compiler_directives=dict(language_level=3, embedsignature=True, binding=True, freethreading_compatible=True),
**extra_cythonize_kwargs,
)

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2 changes: 1 addition & 1 deletion cuda_bindings/tests/cython/build_tests.bat
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Expand Up @@ -5,5 +5,5 @@ REM SPDX-License-Identifier: LicenseRef-NVIDIA-SOFTWARE-LICENSE

setlocal
set CL=%CL% /I"%CUDA_HOME%\include"
cythonize -3 -i %~dp0test_*.pyx
cythonize -3 -i -Xfreethreading_compatible=True %~dp0test_*.pyx
endlocal
2 changes: 1 addition & 1 deletion cuda_bindings/tests/cython/build_tests.sh
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Expand Up @@ -14,4 +14,4 @@ else
exit 1
fi

cythonize -3 -i ${SCRIPTPATH}/test_*.pyx
cythonize -3 -i -Xfreethreading_compatible=True ${SCRIPTPATH}/test_*.pyx
2 changes: 1 addition & 1 deletion cuda_core/build_hooks.py
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Expand Up @@ -101,7 +101,7 @@ def get_cuda_paths():
verbose=True,
language_level=3,
nthreads=nthreads,
compiler_directives={"embedsignature": True, "warn.deprecated.IF": False},
compiler_directives={"embedsignature": True, "warn.deprecated.IF": False, "freethreading_compatible": True},
compile_time_env=compile_time_env,
)

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2 changes: 1 addition & 1 deletion cuda_core/pyproject.toml
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Expand Up @@ -51,7 +51,7 @@ cu12 = ["cuda-bindings[all]==12.*"]
cu13 = ["cuda-bindings[all]==13.*"]

[dependency-groups]
test = ["cython>=3.0", "setuptools", "pytest>=6.2.4"]
test = ["cython>=3.1", "setuptools", "pytest>=6.2.4"]
test-cu12 = ["cuda-core[test]", "cupy-cuda12x; python_version < '3.14'", "cuda-toolkit[cudart]==12.*"] # runtime headers needed by CuPy
test-cu13 = ["cuda-core[test]", "cupy-cuda13x; python_version < '3.14'", "cuda-toolkit[cudart]==13.*"] # runtime headers needed by CuPy
# free threaded build, cupy doesn't support free-threaded builds yet, so avoid installing it for now
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2 changes: 1 addition & 1 deletion cuda_core/tests/cython/build_tests.sh
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Expand Up @@ -15,4 +15,4 @@ else
exit 1
fi

cythonize -3 -i ${SCRIPTPATH}/test_*.pyx
cythonize -3 -i -Xfreethreading_compatible=True ${SCRIPTPATH}/test_*.pyx
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