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[Backport 12.9.x] Fix #1336: Correct CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL type #1479

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[Backport 12.9.x] Fix #1336: Correct CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL type #1479

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d708547
Fix #1336: Correct CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL type (#1451)
mdboom Jan 12, 2026
78092f0
Delete cuda_bindings/docs/source/release/13.1.X-notes.rst
mdboom Jan 14, 2026
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1 change: 1 addition & 0 deletions cuda_bindings/cuda/bindings/_lib/utils.pxd.in
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@ cdef class _HelperCUpointer_attribute:
# Return values
cdef driver.CUcontext _ctx
cdef unsigned int _uint
cdef int _int
cdef driver.CUdeviceptr _devptr
cdef void** _void
cdef driver.CUDA_POINTER_ATTRIBUTE_P2P_TOKENS _token
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4 changes: 3 additions & 1 deletion cuda_bindings/cuda/bindings/_lib/utils.pxi.in
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Expand Up @@ -248,12 +248,14 @@ cdef class _HelperCUpointer_attribute:
else:
self._cptr = <void*><void_ptr>init_value.getPtr()
elif self._attr in ({{if 'CU_POINTER_ATTRIBUTE_MEMORY_TYPE'}}cydriver.CUpointer_attribute_enum.CU_POINTER_ATTRIBUTE_MEMORY_TYPE,{{endif}}
{{if 'CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL'}}cydriver.CUpointer_attribute_enum.CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL,{{endif}}
{{if 'CU_POINTER_ATTRIBUTE_ALLOWED_HANDLE_TYPES'}}cydriver.CUpointer_attribute_enum.CU_POINTER_ATTRIBUTE_ALLOWED_HANDLE_TYPES,{{endif}}
{{if 'CU_POINTER_ATTRIBUTE_IS_GPU_DIRECT_RDMA_CAPABLE'}}cydriver.CUpointer_attribute_enum.CU_POINTER_ATTRIBUTE_IS_GPU_DIRECT_RDMA_CAPABLE,{{endif}}
{{if 'CU_POINTER_ATTRIBUTE_ACCESS_FLAGS'}}cydriver.CUpointer_attribute_enum.CU_POINTER_ATTRIBUTE_ACCESS_FLAGS,{{endif}}):
self._uint = init_value
self._cptr = <void*>&self._uint
elif self._attr in ({{if 'CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL'}}cydriver.CUpointer_attribute_enum.CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL,{{endif}}):
self._int = init_value
self._cptr = <void*>&self._int
elif self._attr in ({{if 'CU_POINTER_ATTRIBUTE_DEVICE_POINTER'}}cydriver.CUpointer_attribute_enum.CU_POINTER_ATTRIBUTE_DEVICE_POINTER,{{endif}}
{{if 'CU_POINTER_ATTRIBUTE_RANGE_START_ADDR'}}cydriver.CUpointer_attribute_enum.CU_POINTER_ATTRIBUTE_RANGE_START_ADDR,{{endif}}):
if self._is_getter:
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16 changes: 16 additions & 0 deletions cuda_bindings/tests/test_cuda.py
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Expand Up @@ -450,6 +450,22 @@ def test_cuda_pointer_attr():
assert err == cuda.CUresult.CUDA_SUCCESS


@pytest.mark.skipif(
driverVersionLessThan(11030) or not supportsManagedMemory(), reason="When new attributes were introduced"
)
def test_pointer_get_attributes_device_ordinal():
attributes = [
cuda.CUpointer_attribute.CU_POINTER_ATTRIBUTE_DEVICE_ORDINAL,
]

attrs = cuda.cuPointerGetAttributes(len(attributes), attributes, 0)

# device ordinals are always small numbers. A large number would indicate
# an overflow error.

assert abs(attrs[1][0]) < 256


@pytest.mark.skipif(not supportsManagedMemory(), reason="When new attributes were introduced")
def test_cuda_mem_range_attr():
(err,) = cuda.cuInit(0)
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