Print time in extract examples

trainer/src/Trainer.cpp

@@ -33,6 +33,8 @@ void Trainer::createDevDataset(SubConfig & config, bool debug)
 
 void Trainer::extractExamples(SubConfig & config, bool debug, std::vector<torch::Tensor> & contexts, std::vector<torch::Tensor> & classes)
 {
+  fmt::print(stderr, "[{}] Starting to extract examples\n", util::getTime());
+
   config.addPredicted(machine.getPredicted());
   config.setState(machine.getStrategy().getInitialState());
 
@@ -88,6 +90,8 @@ void Trainer::extractExamples(SubConfig & config, bool debug, std::vector<torch:
     if (config.needsUpdate())
       config.update();
   }
+
+  fmt::print(stderr, "[{}] Extracted {} examples\n", util::getTime(), util::int2HumanStr(classes.size()));
 }
 
 float Trainer::processDataset(DataLoader & loader, bool train, bool printAdvancement)