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LogLayer gpu functionality moved to .cu file
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Malte Stær Nissen
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Jun 4, 2015
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| #include <algorithm> | ||
| #include <vector> | ||
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| #include "caffe/layer.hpp" | ||
| #include "caffe/neuron_layers.hpp" | ||
| #include "caffe/util/math_functions.hpp" | ||
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| namespace caffe { | ||
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| template <typename Dtype> | ||
| void LogLayer<Dtype>::Forward_gpu(const vector<Blob<Dtype>*>& bottom, | ||
| const vector<Blob<Dtype>*>& top) { | ||
| const int count = bottom[0]->count(); | ||
| const Dtype* bottom_data = bottom[0]->gpu_data(); | ||
| Dtype* top_data = top[0]->mutable_gpu_data(); | ||
| if (input_scale_ == Dtype(1) && input_shift_ == Dtype(0)) { | ||
| caffe_gpu_log(count, bottom_data, top_data); | ||
| } else { | ||
| caffe_copy(count, bottom_data, top_data); | ||
| if (input_scale_ != Dtype(1)) { | ||
| caffe_gpu_scal(count, input_scale_, top_data); | ||
| } | ||
| if (input_shift_ != Dtype(0)) { | ||
| caffe_gpu_add_scalar(count, input_shift_, top_data); | ||
| } | ||
| caffe_gpu_log(count, top_data, top_data); | ||
| } | ||
| if (base_scale_ != Dtype(1)) { | ||
| caffe_gpu_scal(count, base_scale_, top_data); | ||
| } | ||
| } | ||
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| template <typename Dtype> | ||
| void LogLayer<Dtype>::Backward_gpu(const vector<Blob<Dtype>*>& top, | ||
| const vector<bool>& propagate_down, const vector<Blob<Dtype>*>& bottom) { | ||
| if (!propagate_down[0]) { return; } | ||
| const int count = bottom[0]->count(); | ||
| const Dtype* bottom_data = bottom[0]->gpu_data(); | ||
| const Dtype* top_diff = top[0]->gpu_diff(); | ||
| Dtype* bottom_diff = bottom[0]->mutable_gpu_diff(); | ||
| caffe_copy(count, bottom_data, bottom_diff); | ||
| if (input_scale_ != Dtype(1)) { | ||
| caffe_gpu_scal(count, input_scale_, bottom_diff); | ||
| } | ||
| if (input_shift_ != Dtype(0)) { | ||
| caffe_gpu_add_scalar(count, input_shift_, bottom_diff); | ||
| } | ||
| caffe_gpu_powx(count, bottom_diff, Dtype(-1), bottom_diff); | ||
| if (backward_num_scale_ != Dtype(1)) { | ||
| caffe_gpu_scal(count, backward_num_scale_, bottom_diff); | ||
| } | ||
| caffe_gpu_mul(count, top_diff, bottom_diff, bottom_diff); | ||
| } | ||
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| INSTANTIATE_LAYER_GPU_FUNCS(LogLayer); | ||
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| } // namespace caffe |