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https://gitcode.com/cann/ops-nn/blob/master/conv/convolution_backward/README.md
groups 输入 反向传播过程中输入通道的分组数。 需满足groups*weight的C维度=input的C维度，groups取值范围为[1,65535]。 INT32
实际代码逻辑中有需要对Cout的约束，需要Cout能整除group
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Thanks for sending an issue! Please fill in the following template to help quickly solve your problem.
Document Link（文档链接）
https://gitcode.com/cann/ops-nn/blob/master/conv/convolution_backward/README.md
Issues Section（问题文档片段）
groups 输入
反向传播过程中输入通道的分组数。
需满足groups*weight的C维度=input的C维度，groups取值范围为[1,65535]。
INT32
Existing Issues（存在的问题）
实际代码逻辑中有需要对Cout的约束，需要Cout能整除group