diff --git a/software/trackStackFlowWithHardCandidate.m b/software/trackStackFlowWithHardCandidate.m
index 2d2bd42..32b42dc 100644
--- a/software/trackStackFlowWithHardCandidate.m
+++ b/software/trackStackFlowWithHardCandidate.m
@@ -187,7 +187,7 @@
 
 poolobj = gcp('nocreate'); % If no pool, do not create new one.
 if isempty(poolobj)
-    poolsize = feature('numCores');
+    poolsize = str2double(getenv('NUMBER_OF_PROCESSORS')) - 1;          % Modified by Waddah Moghram on 12/10/2018 and is better to get all cores when hyperthreading is enabled
 else
     poolsize = poolobj.NumWorkers;
 end