diff --git a/DRAMSys/simulator/src/controller/scheduler/SMS.cpp b/DRAMSys/simulator/src/controller/scheduler/SMS.cpp
index 7e9fd5b5..4e8a86fb 100644
--- a/DRAMSys/simulator/src/controller/scheduler/SMS.cpp
+++ b/DRAMSys/simulator/src/controller/scheduler/SMS.cpp
@@ -68,8 +68,11 @@ void SMS::batchFormation()
 
 void SMS::batchScheduler()
 {
+  sc_time memClk = Configuration::getInstance().memSpec.clk;
   while (true)
   {
+    wait(memClk);
+
     srand(time(NULL));
     bool isSJF = (rand() % 100) < SJFprobability;
     if (!existReadyBatch())
diff --git a/DRAMSys/simulator/src/controller/scheduler/SMS.h b/DRAMSys/simulator/src/controller/scheduler/SMS.h
index 6b7853a6..bb60f447 100644
--- a/DRAMSys/simulator/src/controller/scheduler/SMS.h
+++ b/DRAMSys/simulator/src/controller/scheduler/SMS.h
@@ -26,10 +26,13 @@ public:
         memrequestcounter.emplace(Thread(threadID), 0);
         memoryIntensity.emplace(Thread(threadID), 0);
       }
+      SC_THREAD(batchScheduler);
     }
+    SC_HAS_PROCESS(SMS);
     virtual ~SMS(){}
     virtual void schedule(gp *payload) override;
     virtual std::pair<Command, gp*> getNextRequest(Bank bank) override;
+    void batchScheduler();
 
 private:
     std::map<Thread, std::deque<gp*>> buffer;
@@ -40,7 +43,6 @@ private:
     std::map<Thread, float> memoryIntensity; 
     unsigned int SJFprobability;
 
-    void batchScheduler();
     unsigned int totalMemoryRequests();
     void batchFormation();
     void selectSJF();