Limit onnx runtime to 1 thread

app.py

@@ -1,7 +1,7 @@
 import os
-os.system("pip install --upgrade pip")
+#os.system("pip install --upgrade pip")
+#os.system("pip install dlib")
 import onnxruntime as rt
-os.system("pip install dlib")
 import sys
 import PIL
 from PIL import Image, ImageOps, ImageFile
@@ -14,7 +14,9 @@ import requests
 import face_detection
 
 MODEL_FILE = "comics-heroes_p2s2p_model_from_scripted-simp.quant.onnx"
-session = rt.InferenceSession(MODEL_FILE)
+so = rt.SessionOptions()
+so.inter_op_num_threads = 1
+session = rt.InferenceSession(MODEL_FILE, sess_options=so)
 input_name = session.get_inputs()[0].name
 print("input_name = " + str(input_name))
 output_name = session.get_outputs()[0].name