add printf for debug

src/workload/codes-workload.c

@@ -135,6 +135,8 @@ void codes_workload_get_next(
             break;
         tmp = tmp->next;
     }
+    if(tmp==NULL)
+        printf("tmp is NULL, rank=%d, app_id = %d", rank, app_id);
     assert(tmp);
     if(tmp->lifo)
     {

src/workload/methods/codes-dumpi-trace-nw-wrkld.c

@@ -703,7 +703,7 @@ void dumpi_trace_nw_workload_get_next(int app_id, int rank, struct codes_workloa
    hash_link = qhash_search(rank_tbl, &cmp);
    if(!hash_link)
    {
-      printf("\n not found for rank id %d ", rank);
+      printf("\n not found for rank id %d , %d", rank, app_id);
       op->op_type = CODES_WK_END;
       return;
    }