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paddlepaddle--paddle/test/legacy_test/test_dlpack.py
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2026-07-13 12:40:42 +08:00

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# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import numpy as np
from op_test import get_device_place, is_custom_device
from utils import dygraph_guard, static_guard
import paddle
from paddle import base
from paddle.base import core
from paddle.utils.dlpack import DLDeviceType
class TestDLPack(unittest.TestCase):
def test_dlpack_dygraph(self):
with dygraph_guard():
tensor = paddle.to_tensor(np.array([1, 2, 3, 4]).astype("int"))
dlpack_v1 = paddle.to_dlpack(tensor)
out_from_dlpack_v1 = paddle.from_dlpack(dlpack_v1)
dlpack_v2 = paddle.to_dlpack(tensor)
out_from_dlpack_v2 = paddle.from_dlpack(dlpack_v2)
self.assertTrue(
isinstance(out_from_dlpack_v1, paddle.base.core.eager.Tensor)
)
self.assertTrue(
isinstance(out_from_dlpack_v2, paddle.base.core.eager.Tensor)
)
self.assertEqual(str(tensor.place), str(out_from_dlpack_v1.place))
self.assertEqual(str(tensor.place), str(out_from_dlpack_v2.place))
np.testing.assert_array_equal(
out_from_dlpack_v1.numpy(), np.array([1, 2, 3, 4]).astype("int")
)
np.testing.assert_array_equal(
out_from_dlpack_v2.numpy(), np.array([1, 2, 3, 4]).astype("int")
)
def test_dlpack_tensor_larger_than_2dim(self):
with dygraph_guard():
numpy_data = np.random.randn(4, 5, 6)
t = paddle.to_tensor(numpy_data)
dlpack_v1 = paddle.to_dlpack(t)
dlpack_v2 = paddle.to_dlpack(t)
out_v1 = paddle.from_dlpack(dlpack_v1)
out_v2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(str(t.place), str(out_v1.place))
self.assertEqual(str(t.place), str(out_v2.place))
np.testing.assert_allclose(numpy_data, out_v1.numpy(), rtol=1e-05)
np.testing.assert_allclose(numpy_data, out_v2.numpy(), rtol=1e-05)
def test_dlpack_static(self):
with static_guard():
tensor = base.create_lod_tensor(
np.array([[1], [2], [3], [4]]).astype("int"),
[[1, 3]],
base.CPUPlace(),
)
dlpack_v1 = paddle.to_dlpack(tensor)
out_from_dlpack_v1 = paddle.from_dlpack(dlpack_v1)
dlpack_v2 = paddle.to_dlpack(tensor)
out_from_dlpack_v2 = paddle.from_dlpack(dlpack_v2)
self.assertTrue(
isinstance(out_from_dlpack_v1, base.core.DenseTensor)
)
self.assertTrue(
isinstance(out_from_dlpack_v2, base.core.DenseTensor)
)
np.testing.assert_array_equal(
np.array(out_from_dlpack_v1),
np.array([[1], [2], [3], [4]]).astype("int"),
)
np.testing.assert_array_equal(
np.array(out_from_dlpack_v2),
np.array([[1], [2], [3], [4]]).astype("int"),
)
# when build with cuda
if core.is_compiled_with_cuda() or is_custom_device():
gtensor = base.create_lod_tensor(
np.array([[1], [2], [3], [4]]).astype("int"),
[[1, 3]],
get_device_place(),
)
gdlpack_v1 = paddle.to_dlpack(gtensor)
gdlpack_v2 = paddle.to_dlpack(gtensor)
gout_from_dlpack_v1 = paddle.from_dlpack(gdlpack_v1)
gout_from_dlpack_v2 = paddle.from_dlpack(gdlpack_v2)
self.assertTrue(
isinstance(gout_from_dlpack_v1, base.core.DenseTensor)
)
self.assertTrue(
isinstance(gout_from_dlpack_v2, base.core.DenseTensor)
)
np.testing.assert_array_equal(
np.array(gout_from_dlpack_v1),
np.array([[1], [2], [3], [4]]).astype("int"),
)
np.testing.assert_array_equal(
np.array(gout_from_dlpack_v2),
np.array([[1], [2], [3], [4]]).astype("int"),
)
def test_dlpack_dtype_and_place_consistency(self):
with dygraph_guard():
dtypes = [
"float16",
"float32",
"float64",
"int8",
"int16",
"int32",
"int64",
"uint8",
"bool",
]
places = [base.CPUPlace()]
if paddle.is_compiled_with_cuda() or is_custom_device():
places.append(get_device_place())
places.append(base.CUDAPinnedPlace())
dtypes.append("bfloat16")
data = np.ones((2, 3, 4))
for place in places:
for dtype in dtypes:
x = paddle.to_tensor(data, dtype=dtype, place=place)
dlpack_v1 = paddle.to_dlpack(x)
o_v1 = paddle.from_dlpack(dlpack_v1)
dlpack_v2 = paddle.to_dlpack(x)
o_v2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(x.dtype, o_v1.dtype)
self.assertEqual(x.dtype, o_v2.dtype)
np.testing.assert_allclose(
x.numpy(), o_v1.numpy(), rtol=1e-05
)
np.testing.assert_allclose(
x.numpy(), o_v2.numpy(), rtol=1e-05
)
self.assertEqual(str(x.place), str(o_v1.place))
self.assertEqual(str(x.place), str(o_v2.place))
complex_dtypes = ["complex64", "complex128"]
for place in places:
for dtype in complex_dtypes:
x = paddle.to_tensor(
[[1 + 6j, 2 + 5j, 3 + 4j], [4 + 3j, 5 + 2j, 6 + 1j]],
dtype=dtype,
place=place,
)
dlpack_v1 = paddle.to_dlpack(x)
o_v1 = paddle.from_dlpack(dlpack_v1)
dlpack_v2 = paddle.to_dlpack(x)
o_v2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(x.dtype, o_v1.dtype)
self.assertEqual(x.dtype, o_v2.dtype)
np.testing.assert_allclose(
x.numpy(), o_v1.numpy(), rtol=1e-05
)
np.testing.assert_allclose(
x.numpy(), o_v2.numpy(), rtol=1e-05
)
self.assertEqual(str(x.place), str(o_v1.place))
self.assertEqual(str(x.place), str(o_v2.place))
def test_dlpack_deletion(self):
# See Paddle issue 47171
with dygraph_guard():
places = [base.CPUPlace()]
if paddle.is_compiled_with_cuda() or is_custom_device():
places.append(get_device_place())
for place in places:
for _ in range(4):
a = paddle.rand(shape=[3, 5], dtype="float32").to(
device=place
)
dlpack_v1 = paddle.to_dlpack(a)
dlpack_v2 = paddle.to_dlpack(a)
b1 = paddle.from_dlpack(dlpack_v1)
b2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(str(a.place), str(b1.place))
self.assertEqual(str(a.place), str(b2.place))
def test_to_dlpack_for_loop(self):
# See Paddle issue 50120
with dygraph_guard():
places = [base.CPUPlace()]
if paddle.is_compiled_with_cuda() or is_custom_device():
places.append(get_device_place())
for place in places:
for _ in range(4):
x = paddle.rand([3, 5]).to(device=place)
dlpack_v1 = paddle.to_dlpack(x)
dlpack_v2 = paddle.to_dlpack(x)
def test_to_dlpack_modification(self):
# See Paddle issue 50120
with dygraph_guard():
places = [base.CPUPlace()]
if paddle.is_compiled_with_cuda() or is_custom_device():
places.append(get_device_place())
for place in places:
for _ in range(4):
x = paddle.rand([3, 5]).to(device=place)
dlpack_v1 = paddle.to_dlpack(x)
dlpack_v2 = paddle.to_dlpack(x)
y1 = paddle.from_dlpack(dlpack_v1)
y2 = paddle.from_dlpack(dlpack_v2)
y1[1:2, 2:5] = 2.0
y2[1:2, 2:5] = 2.0
np.testing.assert_allclose(x.numpy(), y1.numpy())
np.testing.assert_allclose(x.numpy(), y2.numpy())
self.assertEqual(str(x.place), str(y1.place))
self.assertEqual(str(x.place), str(y2.place))
def test_to_dlpack_data_ptr_consistency(self):
# See Paddle issue 50120
with dygraph_guard():
places = [base.CPUPlace()]
if paddle.is_compiled_with_cuda() or is_custom_device():
places.append(get_device_place())
for place in places:
for _ in range(4):
x = paddle.rand([3, 5]).to(device=place)
dlpack_v1 = paddle.to_dlpack(x)
dlpack_v2 = paddle.to_dlpack(x)
y1 = paddle.from_dlpack(dlpack_v1)
y2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(x.data_ptr(), y1.data_ptr())
self.assertEqual(x.data_ptr(), y2.data_ptr())
self.assertEqual(str(x.place), str(y1.place))
self.assertEqual(str(x.place), str(y2.place))
def test_to_dlpack_strides_consistency(self):
with dygraph_guard():
places = [base.CPUPlace()]
if paddle.is_compiled_with_cuda() or is_custom_device():
places.append(get_device_place())
for place in places:
for _ in range(4):
x = paddle.rand([10, 10]).to(device=place)
x_strided = x[::2, ::2]
dlpack_v1 = paddle.to_dlpack(x_strided)
dlpack_v2 = paddle.to_dlpack(x_strided)
y1 = paddle.from_dlpack(dlpack_v1)
y2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(x_strided.strides, y1.strides)
self.assertEqual(x_strided.strides, y2.strides)
self.assertEqual(str(x_strided.place), str(y1.place))
self.assertEqual(str(x_strided.place), str(y2.place))
np.testing.assert_equal(x_strided.numpy(), y1.numpy())
np.testing.assert_equal(x_strided.numpy(), y2.numpy())
def test_to_dlpack_from_ext_tensor(self):
with dygraph_guard():
for _ in range(4):
x = np.random.randn(3, 5)
y1 = paddle.from_dlpack(x)
y2 = paddle.from_dlpack(x)
self.assertEqual(
x.__array_interface__['data'][0], y1.data_ptr()
)
self.assertEqual(
x.__array_interface__['data'][0], y2.data_ptr()
)
np.testing.assert_allclose(x, y1.numpy())
np.testing.assert_allclose(x, y2.numpy())
def test_to_dlpack_from_zero_dim(self):
with dygraph_guard():
places = [base.CPUPlace()]
if paddle.is_compiled_with_cuda() or is_custom_device():
places.append(get_device_place())
for place in places:
for _ in range(4):
x = paddle.to_tensor(1.0, place=place)
dlpack_v1 = paddle.to_dlpack(x)
dlpack_v2 = paddle.to_dlpack(x)
y1 = paddle.from_dlpack(dlpack_v1)
y2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(x.data_ptr(), y1.data_ptr())
self.assertEqual(x.data_ptr(), y2.data_ptr())
self.assertEqual(str(x.place), str(y1.place))
self.assertEqual(str(x.place), str(y2.place))
self.assertEqual(y1.shape, [])
self.assertEqual(y2.shape, [])
self.assertEqual(y1.numel().item(), 1)
self.assertEqual(y2.numel().item(), 1)
np.testing.assert_array_equal(x.numpy(), y1.numpy())
np.testing.assert_array_equal(x.numpy(), y2.numpy())
def test_to_dlpack_from_zero_size(self):
with dygraph_guard():
places = [base.CPUPlace()]
if paddle.is_compiled_with_cuda() or is_custom_device():
places.append(get_device_place())
for place in places:
for _ in range(4):
x = paddle.zeros([0, 10]).to(device=place)
dlpack_v1 = paddle.to_dlpack(x)
dlpack_v2 = paddle.to_dlpack(x)
y1 = paddle.from_dlpack(dlpack_v1)
y2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(x.data_ptr(), y1.data_ptr())
self.assertEqual(x.data_ptr(), y2.data_ptr())
self.assertEqual(str(x.place), str(y1.place))
self.assertEqual(str(x.place), str(y2.place))
self.assertEqual(y1.shape, [0, 10])
self.assertEqual(y2.shape, [0, 10])
self.assertEqual(y1.numel().item(), 0)
self.assertEqual(y2.numel().item(), 0)
np.testing.assert_array_equal(x.numpy(), y1.numpy())
np.testing.assert_array_equal(x.numpy(), y2.numpy())
class TestDLPackDevice(unittest.TestCase):
def test_dlpack_device(self):
with dygraph_guard():
tensor_cpu = paddle.to_tensor([1, 2, 3], place=base.CPUPlace())
device_type, device_id = tensor_cpu.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLCPU)
self.assertEqual(device_id, None)
if paddle.is_compiled_with_cuda() or is_custom_device():
tensor_cuda = paddle.to_tensor(
[1, 2, 3], place=get_device_place()
)
device_type, device_id = tensor_cuda.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLCUDA)
self.assertEqual(device_id, 0)
if paddle.is_compiled_with_cuda() or is_custom_device():
tensor_pinned = paddle.to_tensor(
[1, 2, 3], place=base.CUDAPinnedPlace()
)
device_type, device_id = tensor_pinned.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLCUDAHost)
self.assertEqual(device_id, None)
if paddle.is_compiled_with_xpu():
tensor_xpu = paddle.to_tensor([1, 2, 3], place=base.XPUPlace(0))
device_type, device_id = tensor_xpu.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLOneAPI)
self.assertEqual(device_id, 0)
def test_dlpack_device_zero_dim(self):
with dygraph_guard():
tensor = paddle.to_tensor(5.0, place=base.CPUPlace())
device_type, device_id = tensor.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLCPU)
self.assertEqual(device_id, None)
if paddle.is_compiled_with_cuda() or is_custom_device():
tensor_cuda = paddle.to_tensor(5.0, place=get_device_place())
device_type, device_id = tensor_cuda.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLCUDA)
self.assertEqual(device_id, 0)
if paddle.is_compiled_with_xpu():
tensor_xpu = paddle.to_tensor(5.0, place=base.XPUPlace(0))
device_type, device_id = tensor_xpu.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLOneAPI)
self.assertEqual(device_id, 0)
def test_dlpack_device_zero_size(self):
with dygraph_guard():
tensor = paddle.to_tensor(
paddle.zeros([0, 10]), place=base.CPUPlace()
)
device_type, device_id = tensor.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLCPU)
self.assertEqual(device_id, None)
if paddle.is_compiled_with_cuda() or is_custom_device():
tensor_cuda = paddle.to_tensor(
paddle.zeros([0, 10]), place=get_device_place()
)
device_type, device_id = tensor_cuda.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLCUDA)
self.assertEqual(device_id, 0)
if paddle.is_compiled_with_xpu():
tensor_xpu = paddle.to_tensor(
paddle.zeros([0, 10]), place=base.XPUPlace(0)
)
device_type, device_id = tensor_xpu.__dlpack_device__()
self.assertEqual(device_type, DLDeviceType.kDLOneAPI)
self.assertEqual(device_id, 0)
class TestRaiseError(unittest.TestCase):
def test_to_dlpack_raise_type_error(self):
self.assertRaises(TypeError, paddle.to_dlpack, np.zeros(5))
self.assertRaises(TypeError, paddle.to_dlpack, np.zeros(5))
class TestVersioned(unittest.TestCase):
CAPSULE = "dltensor"
CAPSULE_VERSIONED = "dltensor_versioned"
def test_to_dlpack_versioned(self):
a = paddle.to_tensor([1, 2, 3])
# version independent DLPack when max_version=None
capsule = a.__dlpack__(max_version=None)
self.assertIn(f'"{TestVersioned.CAPSULE}"', str(capsule))
# version independent DLPack when max_version=(0, 8)
capsule = a.__dlpack__(max_version=(0, 8))
self.assertIn(f'"{TestVersioned.CAPSULE}"', str(capsule))
# versioned DLPack when max_version=(1, 0)
capsule = a.__dlpack__(max_version=(1, 0))
self.assertIn(f'"{TestVersioned.CAPSULE_VERSIONED}"', str(capsule))
# 1version DLPack when max_version=(1, 1)
capsule = a.__dlpack__(max_version=(1, 1))
self.assertIn(f'"{TestVersioned.CAPSULE_VERSIONED}"', str(capsule))
def test_from_dlpack_versioned(self):
a = paddle.to_tensor([1, 2, 3])
versioned_capsule = a.__dlpack__(max_version=(1, 0))
# from versioned DLPack capsule
b = paddle.from_dlpack(versioned_capsule)
np.testing.assert_array_equal(a.numpy(), b.numpy())
self.assertEqual(a.data_ptr(), b.data_ptr())
class TestDtypesLowPrecision(unittest.TestCase):
@dygraph_guard()
def test_dlpack_low_precision(self):
dtypes = [
paddle.float8_e4m3fn,
paddle.float8_e5m2,
]
places = [paddle.CPUPlace()]
if paddle.is_compiled_with_cuda():
places.append(paddle.CUDAPlace(0))
places.append(paddle.CUDAPinnedPlace())
for dtype in dtypes:
for place in places:
data = np.random.randn(2, 3, 4)
x = paddle.to_tensor(data, place=place).cast(dtype)
dlpack_v1 = paddle.to_dlpack(x)
o_v1 = paddle.from_dlpack(dlpack_v1)
dlpack_v2 = paddle.to_dlpack(x)
o_v2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(x.dtype, o_v1.dtype)
self.assertEqual(x.dtype, o_v2.dtype)
np.testing.assert_allclose(x.numpy(), o_v1.numpy(), rtol=1e-05)
np.testing.assert_allclose(x.numpy(), o_v2.numpy(), rtol=1e-05)
self.assertEqual(str(x.place), str(o_v1.place))
self.assertEqual(str(x.place), str(o_v2.place))
self.assertEqual(x.data_ptr(), o_v1.data_ptr())
self.assertEqual(x.data_ptr(), o_v2.data_ptr())
class TestDtypesUnsignedInt(unittest.TestCase):
@dygraph_guard()
def test_dlpack_unsigned_int(self):
dtypes = [
paddle.uint8,
paddle.uint16,
paddle.uint32,
paddle.uint64,
]
places = [paddle.CPUPlace()]
if paddle.is_compiled_with_cuda():
places.append(paddle.CUDAPlace(0))
places.append(paddle.CUDAPinnedPlace())
for dtype in dtypes:
for place in places:
data = np.random.randint(low=0, high=100, size=(2, 3, 4))
x = paddle.to_tensor(data, place=place).cast(dtype)
dlpack_v1 = paddle.to_dlpack(x)
o_v1 = paddle.from_dlpack(dlpack_v1)
dlpack_v2 = paddle.to_dlpack(x)
o_v2 = paddle.from_dlpack(dlpack_v2)
self.assertEqual(x.dtype, o_v1.dtype)
self.assertEqual(x.dtype, o_v2.dtype)
np.testing.assert_allclose(x.numpy(), o_v1.numpy(), rtol=1e-05)
np.testing.assert_allclose(x.numpy(), o_v2.numpy(), rtol=1e-05)
self.assertEqual(str(x.place), str(o_v1.place))
self.assertEqual(str(x.place), str(o_v2.place))
self.assertEqual(x.data_ptr(), o_v1.data_ptr())
self.assertEqual(x.data_ptr(), o_v2.data_ptr())
class TestCopySemanticDLPackProtocol(unittest.TestCase):
@dygraph_guard()
def test_dlpack_same_place_cpu(self):
cpu_place = paddle.CPUPlace()
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
dlpack_with_cpu_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCPU, 0)
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cpu_place)
self.assertEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_same_place_cuda(self):
if not paddle.is_compiled_with_cuda():
return
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cuda_place)
dlpack_with_cuda_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCUDA, 0)
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cuda_place)
self.assertEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_same_place_cpu_force_copy(self):
cpu_place = paddle.CPUPlace()
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
dlpack_with_cpu_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCPU, 0),
copy=True,
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cpu_place)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_same_place_cuda_force_copy(self):
if not paddle.is_compiled_with_cuda():
return
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cuda_place)
dlpack_with_cuda_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCUDA, 0),
copy=True,
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cuda_place)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_same_place_cpu_disallow_copy(self):
cpu_place = paddle.CPUPlace()
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
dlpack_with_cpu_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCPU, 0),
copy=False,
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cpu_place)
self.assertEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_same_place_cuda_disallow_copy(self):
if not paddle.is_compiled_with_cuda():
return
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cuda_place)
dlpack_with_cuda_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCUDA, 0),
copy=False,
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cuda_place)
self.assertEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_cross_device_cpu_to_cuda(self):
if not paddle.is_compiled_with_cuda():
return
cpu_place = paddle.CPUPlace()
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
dlpack_with_cuda_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCUDA, 0),
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cuda_place)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
self.assertEqual(str(tensor_from_dlpack.place), str(cuda_place))
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_cross_device_cuda_to_cpu(self):
if not paddle.is_compiled_with_cuda():
return
cpu_place = paddle.CPUPlace()
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cuda_place)
dlpack_with_cpu_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCPU, 0),
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cpu_place)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
self.assertEqual(str(tensor_from_dlpack.place), str(cpu_place))
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_cross_device_cpu_to_cuda_force_copy(self):
if not paddle.is_compiled_with_cuda():
return
cpu_place = paddle.CPUPlace()
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
dlpack_with_cuda_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCUDA, 0),
copy=True,
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cuda_place)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
self.assertEqual(str(tensor_from_dlpack.place), str(cuda_place))
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_cross_device_cuda_to_cpu_force_copy(self):
if not paddle.is_compiled_with_cuda():
return
cpu_place = paddle.CPUPlace()
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cuda_place)
dlpack_with_cpu_place = tensor.__dlpack__(
dl_device=(DLDeviceType.kDLCPU, 0),
copy=True,
)
tensor_from_dlpack = paddle.from_dlpack(dlpack_with_cpu_place)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
self.assertEqual(str(tensor_from_dlpack.place), str(cpu_place))
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_dlpack_cross_device_cpu_to_cuda_disallow_copy(self):
if not paddle.is_compiled_with_cuda():
return
cpu_place = paddle.CPUPlace()
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
with self.assertRaises(BufferError):
tensor.__dlpack__(dl_device=(DLDeviceType.kDLCUDA, 0), copy=False)
@dygraph_guard()
def test_dlpack_cross_device_cuda_to_cpu_disallow_copy(self):
if not paddle.is_compiled_with_cuda():
return
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cuda_place)
with self.assertRaises(BufferError):
tensor.__dlpack__(dl_device=(DLDeviceType.kDLCPU, 0), copy=False)
class TestCopySemanticFromDLPack(unittest.TestCase):
@dygraph_guard()
def test_from_dlpack_same_place(self):
cpu_place = paddle.CPUPlace()
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
tensor_from_dlpack = paddle.from_dlpack(tensor)
self.assertEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_from_dlpack_same_place_cuda(self):
if not paddle.is_compiled_with_cuda():
return
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cuda_place)
tensor_from_dlpack = paddle.from_dlpack(tensor)
self.assertEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_from_dlpack_same_place_force_copy(self):
cpu_place = paddle.CPUPlace()
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
tensor_from_dlpack = paddle.from_dlpack(tensor, copy=True)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_from_dlpack_same_place_disallow_copy(self):
cpu_place = paddle.CPUPlace()
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
tensor_from_dlpack = paddle.from_dlpack(tensor, copy=False)
self.assertEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_from_dlpack_cross_device(self):
if not paddle.is_compiled_with_cuda():
return
cpu_place = paddle.CPUPlace()
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
tensor_from_dlpack = paddle.from_dlpack(tensor, device=cuda_place)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
self.assertEqual(str(tensor_from_dlpack.place), str(cuda_place))
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_from_dlpack_cross_device_force_copy(self):
if not paddle.is_compiled_with_cuda():
return
cpu_place = paddle.CPUPlace()
cuda_place = paddle.CUDAPlace(0)
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
tensor_from_dlpack = paddle.from_dlpack(
tensor, device=cuda_place, copy=True
)
self.assertNotEqual(tensor.data_ptr(), tensor_from_dlpack.data_ptr())
self.assertEqual(str(tensor_from_dlpack.place), str(cuda_place))
np.testing.assert_array_equal(
tensor.numpy(), tensor_from_dlpack.numpy()
)
@dygraph_guard()
def test_from_dlpack_cross_device_disallow_copy(self):
if not paddle.is_compiled_with_cuda():
return
cpu_place = paddle.CPUPlace()
tensor = paddle.to_tensor([1, 2, 3], place=cpu_place)
with self.assertRaises(BufferError):
paddle.from_dlpack(tensor, device=paddle.CUDAPlace(0), copy=False)
if __name__ == "__main__":
unittest.main()