minor updates

app.py

@@ -33,10 +33,13 @@ def load_model(model: str, activation: bool=True):
     if activation:
         model += '_w_activation'
     
+    # set options for onnx runtime
     options = ort.SessionOptions()
     options.intra_op_num_threads = 1
     options.graph_optimization_level = ort.GraphOptimizationLevel.ORT_ENABLE_ALL
     provider = "CPUExecutionProvider"
+    
+    # start session
     ort_session = ort.InferenceSession(model_path + '%s.onnx' % (model), options, providers=[provider])
     # ort_session = ORTModel.load_model(model_path + '%s.onnx' % (model))