forked from mindspore-Ecosystem/mindspore
72 lines
2.7 KiB
Python
72 lines
2.7 KiB
Python
# Copyright 2021 Huawei Technologies Co., Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ============================================================================
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"""test jvp in graph mode"""
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import numpy as np
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import pytest
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import mindspore.nn as nn
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import mindspore.context as context
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from mindspore import Tensor
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from mindspore.nn.grad import Vjp
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context.set_context(mode=context.GRAPH_MODE)
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class SingleInputNet(nn.Cell):
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def construct(self, x):
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return x**3
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class MultipleInputsOutputNet(nn.Cell):
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def construct(self, x, y):
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return 2*x, y**3
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@pytest.mark.level0
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@pytest.mark.platform_x86_cpu
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@pytest.mark.env_onecard
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def test_vjp_single_input_graph():
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x = Tensor(np.array([[1, 2], [3, 4]]).astype(np.float32))
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v = Tensor(np.array([[1, 1], [1, 1]]).astype(np.float32))
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net = SingleInputNet()
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expect_primal = Tensor(np.array([[1, 8], [27, 64]]).astype(np.float32))
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expect_grad = Tensor(np.array([[3, 12], [27, 48]]).astype(np.float32))
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primal, grad = Vjp(net)(x, v)
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assert np.allclose(primal.asnumpy(), expect_primal.asnumpy())
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assert np.allclose(grad.asnumpy(), expect_grad.asnumpy())
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@pytest.mark.level0
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@pytest.mark.platform_x86_cpu
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@pytest.mark.env_onecard
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def test_vjp_multiple_inputs_default_v_graph():
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x = Tensor(np.array([[1, 2], [3, 4]]).astype(np.float32))
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y = Tensor(np.array([[1, 2], [3, 4]]).astype(np.float32))
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v = Tensor(np.array([[1, 1], [1, 1]]).astype(np.float32))
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net = MultipleInputsOutputNet()
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expect_primal_0 = Tensor(np.array([[2, 4], [6, 8]]).astype(np.float32))
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expect_primal_1 = Tensor(np.array([[1, 8], [27, 64]]).astype(np.float32))
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expect_grad_0 = Tensor(np.array([[2, 2], [2, 2]]).astype(np.float32))
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expect_grad_1 = Tensor(np.array([[3, 12], [27, 48]]).astype(np.float32))
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primal, grad = Vjp(net)(x, y, (v, v))
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assert isinstance(primal, tuple)
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assert len(primal) == 2
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assert np.allclose(primal[0].asnumpy(), expect_primal_0.asnumpy())
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assert np.allclose(primal[1].asnumpy(), expect_primal_1.asnumpy())
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assert isinstance(grad, tuple)
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assert len(grad) == 2
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assert np.allclose(grad[0].asnumpy(), expect_grad_0.asnumpy())
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assert np.allclose(grad[1].asnumpy(), expect_grad_1.asnumpy())
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