diff --git a/tool/mesos/singa_scheduler.cc b/tool/mesos/singa_scheduler.cc
index c9b72d4..dc48ae2 100644
--- a/tool/mesos/singa_scheduler.cc
+++ b/tool/mesos/singa_scheduler.cc
@@ -180,7 +180,7 @@
         // store in temporary map
         new_tasks->push_back(task);
         tasks_[offer.id().value()] = new_tasks;
-
+        hostnames_[offer.id().value()] = offer.hostname();
         nhosts_++;
       }
 
@@ -197,7 +197,7 @@
         // launch tasks
         for (map<string, vector<mesos::TaskInfo>*>::iterator it =
             tasks_.begin(); it != tasks_.end(); ++it) {
-          prepare_tasks(it->second, job_counter_, path);
+          prepare_tasks(it->second, hostnames_[it->first], job_counter_, path);
           mesos::OfferID newId;
           newId.set_value(it->first);
           LOG(INFO) << "Launching task with offer ID = " << newId.value();
@@ -219,12 +219,11 @@
     virtual void statusUpdate(SchedulerDriver* driver,
         const mesos::TaskStatus& status) {
       if (status.state() == mesos::TASK_FINISHED)
-        task_counter_--; 
+        task_counter_--;
 
-      if (task_counter_ == 0)
+      if (task_counter_ == 0) {
         driver->stop();
-
-      else if (status.state() == mesos::TASK_FAILED) {
+      } else if (status.state() == mesos::TASK_FAILED) {
         LOG(ERROR) << "TASK FAILED !!!!";
         driver->abort();
       }
@@ -252,14 +251,14 @@
     /**
      * Helper function that initialize TaskInfo with the correct URI and command
      */
-    void prepare_tasks(vector<mesos::TaskInfo> *tasks, int job_id, string job_conf) {
+    void prepare_tasks(vector<mesos::TaskInfo> *tasks, string hostname, int job_id, string job_conf) {
       char path_sys_config[512], path_job_config[512];
       // path to singa.conf
       snprintf(path_sys_config, 512, "hdfs://%s%s", namenode_.c_str(), SINGA_CONFIG);
       snprintf(path_job_config, 512, "hdfs://%s%s", namenode_.c_str(), job_conf.c_str());
 
       char command[512];
-      snprintf(command, 512, "singa -conf ./job.conf -singa_conf ./singa.conf -singa_job %d", job_id);
+      snprintf(command, 512, "singa -conf ./job.conf -singa_conf ./singa.conf -singa_job %d -host %s", job_id, hostname.c_str());
 
       for (int i=0; i < tasks->size(); i++) {
         mesos::CommandInfo *comm = (tasks->at(i)).mutable_command();
@@ -366,6 +365,8 @@
     int nhosts_;
     // temporary map of tasks: <offerID, TaskInfo>
     map<string, vector<mesos::TaskInfo>*> tasks_;
+    // temporary map of offerID to slave IP addresses
+    map<string, string> hostnames_; 
     // SINGA job config file
     string job_conf_file_;
     // HDFS namenode