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function setitem support with stride #57023

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merged 6 commits into from
Sep 12, 2023

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zoooo0820
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@zoooo0820 zoooo0820 commented Sep 6, 2023

PR types

Function optimization

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Description

Pcard-66985

With the introduction of the stride mechanism in dygraph, and the relevant OPs output view has been enabled by default, indexing in Paddle needs to be adjusted accordingly.

In dygraph mode:

  • __getitem__: Basic-indexing will output view of Tensor.
  • __setitem__: Advanced-indexing just assign value directly on the view of original Tensor, without an additional set_value. Moreover, we call set_value dygraph function instead of append_op, since the latter does not support the stride mechanism.

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paddle-bot bot commented Sep 6, 2023

你的PR提交成功,感谢你对开源项目的贡献!
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x_tmp[:, 2] = 20

np.testing.assert_allclose(x.numpy(), np_data)

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shall we add test case of ellipsis index

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done, add a case to test ellipsis index.

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LGTM

@jeff41404 jeff41404 merged commit b9673f6 into PaddlePaddle:develop Sep 12, 2023
@zoooo0820 zoooo0820 deleted the slice_will_output_view branch September 12, 2023 05:02
danleifeng pushed a commit to danleifeng/Paddle that referenced this pull request Nov 14, 2023
* function setitem support with stride

* fix ut

* remove redundant dygraph checks

* add unittest for basic slice output view

* add Ellipsis case
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2 participants