cudnnConvolutionBackwardFilter - create new tensor descriptor for dwDesc?

AI & Data Science Deep Learning (Training & Inference) cuDNN
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This is a question regarding the API for the function cudnnConvolutionBackwardFilter

The API reference states that the function takes a param of const cudnnFilterDescriptor_t dwDesc,

where,

dwDesc: Input . Handle to a previously initialized filter gradient descriptor

Granted that I have instantiated and used a cudnnFilterDescriptor_t filter_desc_ in cudnnConvolutionForward - should I create a new tensor descriptor dwDesc - or should I pass the previously existing (from forward propagation) filter_desc_ as the param for dwDesc in cudnnConvolutionBackwardFilter .

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Hi @johnny_linux,
If the sizes are the same, you can use the existing desc .

Thanks!

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Awesome - thanks!