cudnn_softmax_layer.hpp

#ifndef CAFFE_CUDNN_SOFTMAX_LAYER_HPP_
#define CAFFE_CUDNN_SOFTMAX_LAYER_HPP_
 
#include <vector>
 
#include "caffe/blob.hpp"
#include "caffe/layer.hpp"
#include "caffe/proto/caffe.pb.h"
 
#include "caffe/layers/softmax_layer.hpp"
 
namespace caffe {
 
#ifdef USE_CUDNN
 
template <typename Dtype>
class CuDNNSoftmaxLayer : public SoftmaxLayer<Dtype> {
 public:
  explicit CuDNNSoftmaxLayer(const LayerParameter& param)
      : SoftmaxLayer<Dtype>(param), handles_setup_(false) {}
  virtual void LayerSetUp(const vector<Blob<Dtype>*>& bottom,
      const vector<Blob<Dtype>*>& top);
  virtual void Reshape(const vector<Blob<Dtype>*>& bottom,
      const vector<Blob<Dtype>*>& top);
  virtual ~CuDNNSoftmaxLayer();
 
 protected:
  virtual void Forward_gpu(const vector<Blob<Dtype>*>& bottom,
      const vector<Blob<Dtype>*>& top);
  virtual void Backward_gpu(const vector<Blob<Dtype>*>& top,
     const vector<bool>& propagate_down, const vector<Blob<Dtype>*>& bottom);
 
  bool handles_setup_;
  cudnnHandle_t             handle_;
  cudnnTensorDescriptor_t bottom_desc_;
  cudnnTensorDescriptor_t top_desc_;
};
#endif
 
}  // namespace caffe
 
#endif  // CAFFE_CUDNN_SOFTMAX_LAYER_HPP_