public void CopyAlgorithmDescriptor(AlgorithmDescriptor dest)
 {
     res = CudaDNNNativeMethods.cudnnCopyAlgorithmDescriptor(_desc, dest.Desc);
     Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "cudnnCopyAlgorithmDescriptor", res));
     if (res != cudnnStatus.Success)
     {
         throw new CudaDNNException(res);
     }
 }