message: enable tensor cores for fp16 convolutions
diff: @@ -224,6 +224,8 @@ namespace cv { namespace dnn { namespace cuda4dnn { namespace csl { namespace cu
  );
  }
  CUDA4DNN_CHECK_CUDNN(cudnnSetConvolutionGroupCount(descriptor, group_count));
  + if (std::is_same<T, half>::value)
  + CUDA4DNN_CHECK_CUDNN(cudnnSetConvolutionMathType(descriptor, CUDNN_TENSOR_OP_MATH));
  } catch (...) {
  /* cudnnDestroyConvolutionDescriptor will not fail for a valid desriptor object */
  CUDA4DNN_CHECK_CUDNN(cudnnDestroyConvolutionDescriptor(descriptor));
  