| 47 | |
| 48 | template <typename Dtype> |
| 49 | void Net<Dtype>::Init(const NetParameter& in_param) { |
| 50 | CHECK(Caffe::root_solver() || root_net_) |
| 51 | << "root_net_ needs to be set for all non-root solvers"; |
| 52 | // Set phase from the state. |
| 53 | phase_ = in_param.state().phase(); |
| 54 | // Filter layers based on their include/exclude rules and |
| 55 | // the current NetState. |
| 56 | NetParameter filtered_param; |
| 57 | FilterNet(in_param, &filtered_param); |
| 58 | LOG_IF(INFO, Caffe::root_solver()) |
| 59 | << "Initializing net from parameters: " << std::endl |
| 60 | << filtered_param.DebugString(); |
| 61 | // Create a copy of filtered_param with splits added where necessary. |
| 62 | NetParameter param; |
| 63 | InsertSplits(filtered_param, ¶m); |
| 64 | // Basically, build all the layers and set up their connections. |
| 65 | name_ = param.name(); |
| 66 | map<string, int> blob_name_to_idx; |
| 67 | set<string> available_blobs; |
| 68 | memory_used_ = 0; |
| 69 | // For each layer, set up its input and output |
| 70 | bottom_vecs_.resize(param.layer_size()); |
| 71 | top_vecs_.resize(param.layer_size()); |
| 72 | bottom_id_vecs_.resize(param.layer_size()); |
| 73 | param_id_vecs_.resize(param.layer_size()); |
| 74 | top_id_vecs_.resize(param.layer_size()); |
| 75 | bottom_need_backward_.resize(param.layer_size()); |
| 76 | for (int layer_id = 0; layer_id < param.layer_size(); ++layer_id) { |
| 77 | // For non-root solvers, whether this layer is shared from root_net_. |
| 78 | bool share_from_root = !Caffe::root_solver() |
| 79 | && root_net_->layers_[layer_id]->ShareInParallel(); |
| 80 | // Inherit phase from net if unset. |
| 81 | if (!param.layer(layer_id).has_phase()) { |
| 82 | param.mutable_layer(layer_id)->set_phase(phase_); |
| 83 | } |
| 84 | // Setup layer. |
| 85 | const LayerParameter& layer_param = param.layer(layer_id); |
| 86 | if (layer_param.propagate_down_size() > 0) { |
| 87 | CHECK_EQ(layer_param.propagate_down_size(), |
| 88 | layer_param.bottom_size()) |
| 89 | << "propagate_down param must be specified " |
| 90 | << "either 0 or bottom_size times "; |
| 91 | } |
| 92 | if (share_from_root) { |
| 93 | LOG(INFO) << "Sharing layer " << layer_param.name() << " from root net"; |
| 94 | layers_.push_back(root_net_->layers_[layer_id]); |
| 95 | layers_[layer_id]->SetShared(true); |
| 96 | } else { |
| 97 | layers_.push_back(LayerRegistry<Dtype>::CreateLayer(layer_param)); |
| 98 | } |
| 99 | layer_names_.push_back(layer_param.name()); |
| 100 | LOG_IF(INFO, Caffe::root_solver()) |
| 101 | << "Creating Layer " << layer_param.name(); |
| 102 | bool need_backward = false; |
| 103 | |
| 104 | // Figure out this layer's input and output |
| 105 | for (int bottom_id = 0; bottom_id < layer_param.bottom_size(); |
| 106 | ++bottom_id) { |
nothing calls this directly
no test coverage detected