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

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# Copyright (c) 2020 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 sys
import unittest
sys.path.append("../../legacy_test")
import numpy as np
from op_test import (
OpTest,
check_out_dtype,
get_device_place,
get_places,
is_custom_device,
)
from test_sum_op import TestReduceOPTensorAxisBase
from utils import dygraph_guard, static_guard
import paddle
from paddle import base
from paddle.base import core
class ApiMinTest(unittest.TestCase):
def setUp(self):
if core.is_compiled_with_cuda() or is_custom_device():
self.place = get_device_place()
else:
self.place = core.CPUPlace()
def test_api(self):
paddle.enable_static()
with paddle.static.program_guard(
paddle.static.Program(), paddle.static.Program()
):
data = paddle.static.data("data", shape=[10, 10], dtype="float32")
result_min = paddle.min(x=data, axis=1)
exe = paddle.static.Executor(self.place)
input_data = np.random.rand(10, 10).astype(np.float32)
(res,) = exe.run(feed={"data": input_data}, fetch_list=[result_min])
self.assertEqual((res == np.min(input_data, axis=1)).all(), True)
with paddle.static.program_guard(
paddle.static.Program(), paddle.static.Program()
):
data = paddle.static.data("data", shape=[10, 10], dtype="int64")
result_min = paddle.min(x=data, axis=0)
exe = paddle.static.Executor(self.place)
input_data = np.random.randint(10, size=(10, 10)).astype(np.int64)
(res,) = exe.run(feed={"data": input_data}, fetch_list=[result_min])
self.assertEqual((res == np.min(input_data, axis=0)).all(), True)
with paddle.static.program_guard(
paddle.static.Program(), paddle.static.Program()
):
data = paddle.static.data("data", shape=[10, 10], dtype="int64")
result_min = paddle.min(x=data, axis=(0, 1))
exe = paddle.static.Executor(self.place)
input_data = np.random.randint(10, size=(10, 10)).astype(np.int64)
(res,) = exe.run(feed={"data": input_data}, fetch_list=[result_min])
self.assertEqual((res == np.min(input_data, axis=(0, 1))).all(), True)
def test_errors(self):
paddle.enable_static()
def test_input_type():
with paddle.static.program_guard(
paddle.static.Program(), paddle.static.Program()
):
data = np.random.rand(10, 10)
result_min = paddle.min(x=data, axis=0)
self.assertRaises(TypeError, test_input_type)
def test_imperative_api(self):
paddle.disable_static()
np_x = np.array([10, 10]).astype('float64')
x = paddle.to_tensor(np_x)
z = paddle.min(x, axis=0)
np_z = z.numpy()
z_expected = np.array(np.min(np_x, axis=0))
self.assertEqual((np_z == z_expected).all(), True)
def test_support_tuple(self):
paddle.disable_static()
np_x = np.array([10, 10]).astype('float64')
x = paddle.to_tensor(np_x)
z = paddle.min(x, axis=(0,))
np_z = z.numpy()
z_expected = np.array(np.min(np_x, axis=0))
self.assertEqual((np_z == z_expected).all(), True)
class TestOutDtype(unittest.TestCase):
def test_min(self):
api_fn = paddle.min
shape = [10, 16]
check_out_dtype(
api_fn,
in_specs=[(shape,)],
expect_dtypes=['float32', 'float64', 'int32', 'int64'],
)
class TestMinWithTensorAxis1(TestReduceOPTensorAxisBase):
def init_data(self):
self.pd_api = paddle.min
self.np_api = np.min
self.x = paddle.randn([10, 5, 9, 9], dtype='float64')
self.np_axis = np.array([1, 2], dtype='int64')
self.tensor_axis = paddle.to_tensor([1, 2], dtype='int64')
class TestMinWithTensorAxis2(TestReduceOPTensorAxisBase):
def init_data(self):
self.pd_api = paddle.min
self.np_api = np.min
self.x = paddle.randn([10, 10, 9, 9], dtype='float64')
self.np_axis = np.array([0, 1, 2], dtype='int64')
self.tensor_axis = [
0,
paddle.to_tensor([1], 'int64'),
paddle.to_tensor([2], 'int64'),
]
self.keepdim = True
class TestMinZeroSize1(unittest.TestCase):
def init_data(self):
self.shape = [0, 1, 2, 3]
self.axis = [1, 2, 3]
self.keepdims = False
def setUp(self):
self.init_data()
self.data = np.random.random(self.shape).astype(np.float64)
self.expect_res = np.min(
self.data, axis=tuple(self.axis), keepdims=self.keepdims
)
self.places = get_places()
def test_static(self):
with static_guard():
for place in self.places:
with paddle.static.program_guard(
paddle.static.Program(), paddle.static.Program()
):
x = paddle.static.data(
"x", shape=self.shape, dtype="float64"
)
res = paddle.min(x, axis=self.axis, keepdim=self.keepdims)
exe = paddle.static.Executor(place)
(res,) = exe.run(feed={"x": self.data}, fetch_list=[res])
np.testing.assert_equal(res, self.expect_res)
def test_dygraph(self):
with dygraph_guard():
x = paddle.to_tensor(self.data)
res = paddle.min(x, axis=self.axis, keepdim=self.keepdims)
np.testing.assert_equal(res, self.expect_res)
class TestMinZeroSize2(TestMinZeroSize1):
def init_data(self):
self.shape = [0, 0, 2]
self.axis = [2]
self.keepdims = False
class TestMinZeroSize3(TestMinZeroSize1):
def init_data(self):
self.shape = [0, 0, 2]
self.axis = [2]
self.keepdims = True
class TestMinOp(OpTest):
def setUp(self):
self.op_type = "reduce_min"
self.python_api = paddle.min
self.init_data()
self.prepare_data()
def init_data(self):
self.shape = [0, 1, 2]
self.axis = [1]
self.keepdims = False
self.dtype = np.float64
def prepare_data(self):
self._input_data = np.random.random(self.shape).astype(self.dtype)
self._output_data = np.min(
self._input_data, keepdims=self.keepdims, axis=tuple(self.axis)
)
self.inputs = {'X': self._input_data}
self.outputs = {'Out': self._output_data}
self.attrs = {"dim": self.axis, "keep_dim": self.keepdims}
def test_check_output(self):
self.check_output(check_pir=True)
def test_check_grad(self):
self.check_grad(
['X'],
['Out'],
check_pir=True,
)
@unittest.skipIf(
not core.is_bfloat16_supported(get_device_place()),
"place does not support BF16 evaluation",
)
class TestMinBfloat16(unittest.TestCase):
def init_data(self):
self.shape = [0, 1, 2]
self.axis = [1]
self.keepdims = False
def setUp(self):
self.init_data()
data = np.random.random(self.shape).astype(np.float64)
res = np.min(data, axis=tuple(self.axis), keepdims=self.keepdims)
self.expect_shape = res.shape
def test_shape(self):
with dygraph_guard():
x = paddle.zeros(self.shape, dtype=paddle.bfloat16)
res = paddle.min(x, axis=self.axis, keepdim=self.keepdims)
res = res.numpy()
np.testing.assert_equal(res.shape, self.expect_shape)
class TestMinAPIWithEmptyTensor(unittest.TestCase):
def test_empty_tensor(self):
with (
base.dygraph.guard(),
self.assertRaises(ValueError),
):
data = np.array([], dtype=np.float32)
data = np.reshape(data, [0, 0, 0, 0, 0, 0, 0])
x = paddle.to_tensor(data, dtype='float64')
np_axis = np.array([0], dtype='int64')
tensor_axis = paddle.to_tensor(np_axis, dtype='int64')
out = paddle.min(x, tensor_axis)
class TestMinWithNan(unittest.TestCase):
def _get_places(self):
return get_places()
def _test_with_nan_static(
self, func, shape, dtype=np.float32, place=paddle.CPUPlace()
):
with (
static_guard(),
paddle.static.program_guard(
paddle.static.Program(), paddle.static.Program()
),
):
x_np = np.arange(np.prod(shape), dtype=dtype).reshape(shape)
x_np[0, 0] = np.nan
x = paddle.static.data(name='x', shape=shape, dtype=dtype)
out = func(x)
exe = paddle.static.Executor(place)
res = exe.run(feed={'x': x_np}, fetch_list=[out])
self.assertTrue(np.isnan(res[0]), "Result should be NaN")
def _test_with_nan_dynamic(
self, func, shape, dtype=np.float32, place=paddle.CPUPlace()
):
with dygraph_guard():
x_np = np.arange(np.prod(shape), dtype=dtype).reshape(shape)
x_np[0, 0] = np.nan
x = paddle.to_tensor(x_np, place=place)
out = func(x)
self.assertTrue(paddle.isnan(out), "Result should be NaN")
def test_with_nan(self):
places = self._get_places()
for place in places:
self._test_with_nan_dynamic(paddle.min, (2, 3), place=place)
self._test_with_nan_static(paddle.min, (2, 3), place=place)
if __name__ == '__main__':
unittest.main()