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[0-size Tensor] Add 0-size Tensor support for paddle.multiply、paddle.__mul___ by DanielSun11 · Pull Request #72984 · PaddlePaddle/Paddle · GitHub
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[0-size Tensor] Add 0-size Tensor support for paddle.multiply、paddle.__mul___ #72984
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你的PR提交成功，感谢你对开源项目的贡献! |
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/re-run all-failed |
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/re-run all-failed |
wanghuancoder
approved these changes
May 30, 2025
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LGTM
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PR Category
Execute Infrastructure
PR Types
Improvements
Description
存在的问题
问题1
遇到0-size Tensor时，y 反向梯度shape错误。原因是ElementwiseMulGrad -->GetGradXAndYOut -->SumRawKernel, 但是【SCU】【Paddle Tensor 第二期 API 支持 0-size TensorNo.26、50】paddle.linalg.vecdot 支持 0-size Tensor #70379 对SumRawKernel进行了修改，让SumRawKernel重新对out Tensor的shape进行了推导和resize，进而导致了输出的维度被错误的reduce掉一个维度。
问题2
y为0 size Tensor，x为非0 size Tensor，x 的梯度存在错误。应该全是0。
xpu kernel 前向报错
检查与修复
除了一些非法参数输入，其余均通过。
pcard-67164