Ensure the fast model shuts down when FastmodelAgent is destroyed

fm_agent/fm_agent.py

@@ -18,6 +18,7 @@
 
 import sys
 import os
+from subprocess import Popen
 import time
 import socket
 from .utils import *
@@ -55,6 +56,10 @@ def __init__(self, model_name=None, model_config=None, logger=None, enable_gdbse
         else:
             pass
 
+    def __del__(self):
+        if isinstance(self.subprocess, Popen):
+            self.subprocess.kill()
+
     def setup_simulator(self, model_name, model_config):
         """ setup the simulator, this is crucial before you can start a simulator.
             @param model_name is the specific model name need to be launched