@geq1t Do you mean convolve2NN(signal, filter, strides, dim4(0, 0), dilation) is not working ?

That is eactly what I mean:

#include <arrayfire.h>

int main()
{
    af::array signal = af::randu(5, 5);
    af::array filter = af::randu(3, 3);
    af::dim4 strides(1, 1), dilation(1, 1);
    af::dim4 padding(0, 0, 1, 1);

    convolve2NN(signal, filter, strides, padding, dilation);
}

gives the following output

terminate called after throwing an instance of 'af::exception'
  what():  ArrayFire Exception (Invalid input argument:202):
In function af_err af_convolve2_nn(void**, af_array, af_array, unsigned int, const dim_t*, unsigned int, const dim_t*, unsigned int, const dim_t*)
In file src/api/c/convolve.cpp:334
Invalid argument at index 5
Expected: padding_dims > 0 && padding_dims <= 2
 0# 0x00007F38D1A5FAFD in /usr/lib/libafopencl.so.3
 1# af_convolve2_nn in /usr/lib/libaf.so.3
 2# af::convolve2NN(af::array const&, af::array const&, af::dim4, af::dim4, af::dim4) in /usr/lib/libaf.so.3
 3# 0x000055E015B752CD in ./conv
 4# __libc_start_main in /usr/lib/libc.so.6
 5# 0x000055E015B750CE in ./conv

In function af::array af::convolve2NN(const af::array&, const af::array&, af::dim4, af::dim4, af::dim4)
In file src/api/cpp/convolve.cpp:58
Aborted (core dumped)

I couldn't find any checks in at the entry point of API that ensures non-zero values in padding argument.

Can you please show me the convolve2NN with necessary parameter values of dim4 arguments.

The check is in src/api/c/convolve.cpp, line 334:

        ARG_ASSERT(5, padding_dims > 0 && padding_dims <= 2);

Padding in convolve2NN #2817

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