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1# Copyright 2020 Huawei Technologies Co., Ltd
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7# http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14# ============================================================================
15import numpy as np
16
17import mindspore.context as context
18import mindspore.nn as nn
19from mindspore import Tensor
20from mindspore.common.initializer import initializer
21from mindspore.common.parameter import Parameter
22from mindspore.communication.management import init, get_rank, get_group_size
23from mindspore.ops import operations as P
24
25context.set_context(mode=context.GRAPH_MODE, device_target='GPU')
26
27init()
28rank = get_rank()
29size = get_group_size()
30x = np.ones([3, 1, 3, 3]).astype(np.float32) * 0.01 * (rank + 1)
31
32
33class Net(nn.Cell):
34    def __init__(self):
35        super(Net, self).__init__()
36        self.x1 = Parameter(initializer(Tensor(x), x.shape), name='x1')
37        self.x2 = Parameter(initializer(Tensor(x), x.shape), name='x2')
38        self.x3 = Parameter(initializer(Tensor(x), x.shape), name='x3')
39
40        self.broadcast1 = P.Broadcast(0)
41        self.broadcast2 = P.Broadcast(1)
42        self.broadcast3 = P.Broadcast(2)
43
44    def construct(self):
45        return (self.broadcast1((self.x1,)),
46                self.broadcast2((self.x2,)),
47                self.broadcast3((self.x3,)))
48
49
50def test_Broadcast():
51    broadcast = Net()
52    output = broadcast()
53
54    expect0 = np.ones([3, 1, 3, 3]).astype(np.float32) * 1
55    expect1 = np.ones([3, 1, 3, 3]).astype(np.float32) * 2
56    expect2 = np.ones([3, 1, 3, 3]).astype(np.float32) * 3
57
58    diff0 = output[0][0].asnumpy() - expect0
59    error0 = np.ones(shape=expect0.shape) * 1.0e-5
60    assert np.all(diff0 < error0)
61    assert output[0][0].shape == expect0.shape
62
63    diff1 = output[1][0].asnumpy() - expect1
64    error1 = np.ones(shape=expect1.shape) * 1.0e-5
65    assert np.all(diff1 < error1)
66    assert output[1][0].shape == expect1.shape
67
68    diff2 = output[2][0].asnumpy() - expect2
69    error2 = np.ones(shape=expect2.shape) * 1.0e-5
70    assert np.all(diff2 < error2)
71    assert output[2][0].shape == expect2.shape
72