--- a
+++ b/util/start_pool.m
@@ -0,0 +1,24 @@
+function start_pool(poolsize_set)
+
+% poolsize_set = 2;
+
+%If no pool, do not create new one
+poolobj = gcp('nocreate'); 
+
+if isempty(poolobj)
+    
+    parpool(poolsize_set);
+    
+else %if isempty(poolobj)
+    
+    %current poolsize
+    poolsize = poolobj.NumWorkers;
+    
+    if poolsize ~= poolsize_set
+        
+        delete(gcp('nocreate'));
+        parpool(poolsize_set);
+        
+    end %if poolsize ~= 2
+    
+end %if isempty(poolobj)
\ No newline at end of file