diff --git a/envs/neurovec.py b/envs/neurovec.py
index f81a6766..03ab4c8d 100755
--- a/envs/neurovec.py
+++ b/envs/neurovec.py
@@ -67,14 +67,24 @@ def __init__(self, env_config):
         
         if self.compile:
             # stores the runtimes of O3 to compute the RL reward and compared to -O3.
-            self.O3_runtimes=get_O3_runtimes(self.new_rundir,self.new_testfiles)
+            self.O3_runtimes = get_O3_runtimes(self.new_rundir, self.new_testfiles)
+            runtimes_with_pid = {}
+            for key in self.O3_runtimes:
+                value = self.O3_runtimes[key]
+                
+                # assumes keys are of the format ./dirname/...
+                key_components = key[2:].split('/')     # removes the `./` prefix
+                key_components[0] = self.new_rundir
+                key = '/'.join(key_components)
+                runtimes_with_pid[key] = value
+            self.O3_runtimes = runtimes_with_pid
     
     def init_from_env_config(self,env_config):
         '''Receives env_config and initalizes all config parameters.'''
         # dirpath is the path to the train data.
         self.dirpath = env_config.get('dirpath')
         # new_rundir is the directory to create and copy the train data to.
-        self.new_rundir = env_config.get('new_rundir') 
+        self.new_rundir = env_config.get('new_rundir') + str(os.getpid())
         # whether or not in inference mode
         self.inference_mode = env_config.get('inference_mode', False)
         if self.inference_mode:
diff --git a/utility.py b/utility.py
index 4bb26a2f..6d1f7526 100644
--- a/utility.py
+++ b/utility.py
@@ -39,6 +39,7 @@
 
 #the maximum number of leafs in the LLVM abstract sytnax tree
 MAX_LEAF_NODES = 320
+TEST_SHELL_COMMAND_TIMEOUT = '50s'
 # pragma line injected for each loop
 pragma_line = '#pragma clang loop vectorize_width({0}) interleave_count({1})\n'
 
@@ -168,8 +169,8 @@ def get_encodings_from_local(rundir):
 def run_llvm_test_shell_command(rundir,filename):
     '''runs the file after the pragma is injected 
     and returns runtime.'''
-    full_path_header = os.path.join(rundir,'header.c')
-    cmd1 = 'timeout 4s '+ os.environ['CLANG_BIN_PATH'] + ' -O3 -lm '+full_path_header \
+    full_path_header = os.path.join(rundir, 'header.c')
+    cmd1 = 'timeout ' + TEST_SHELL_COMMAND_TIMEOUT + ' ' + os.environ['CLANG_BIN_PATH'] + ' -O3 -lm '+full_path_header \
     +' ' +filename+' -o ' +filename[:-1]+'o'
     cmd2 = filename[:-1]+'o '
     os.system(cmd1)
@@ -179,8 +180,8 @@ def run_llvm_test_shell_command(rundir,filename):
         runtime = None #None if fails
         logger.warning('Could not compile ' + filename +  
                        ' due to time out. Setting runtime to: ' + 
-                       str(runtime)+'. Considering increasing the timeout,'+ 
-                       ' which is currently set to 4 seconds.')
+                       str(runtime)+'. Considering increasing the TEST_SHELL_COMMAND_TIMEOUT,'+ 
+                       ' which is currently set to ' + TEST_SHELL_COMMAND_TIMEOUT)
     return runtime
 
 def get_runtime(rundir,new_code,current_filename):