Abstract: A device for partitioning an input neural network includes an interposing circuit configured to determine a partitioning position to at which the input neural network is to be partitioned, to interpose a partitioning layer in the input neural network at the partitioning position; and to output and entire neural network that is obtained by interposing the partitioning layer in the input neural network, a training circuit configured to train the entire neural network; and a partitioning circuit configured to divide the entire neural network into a plurality of neural network partitions by partition the partitioning layer. The input neural network includes a plurality of layers.