public ConvolutionDescriptor()
{
_desc = new cudnnConvolutionDescriptor();
res = CudaDNNNativeMethods.cudnnCreateConvolutionDescriptor(ref _desc);
Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "cudnnCreateConvolutionDescriptor", res));
if (res != cudnnStatus.Success)
throw new CudaDNNException(res);
}