diff --git a/cs677/hw4/src/transpose.cc b/cs677/hw4/src/transpose.cc
index 584af5a..5a80917 100644
--- a/cs677/hw4/src/transpose.cc
+++ b/cs677/hw4/src/transpose.cc
@@ -2,6 +2,7 @@
 #include <iostream>
 #include <sys/time.h>
 #include <mpi.h>
+#include <unistd.h>     /* usleep() */
 using namespace std;
 
 /*
@@ -101,7 +102,9 @@ int main(int argc, char * argv[])
             printMatrix(&matrix[0][0], n, n);
             cout << endl;
         }
-        MPI_Barrier(MPI_COMM_WORLD);      /* for printint coherently */
+        MPI_Barrier(MPI_COMM_WORLD);      /* for printing coherently */
+        usleep(100000);
+        MPI_Barrier(MPI_COMM_WORLD);
     }
 
     /* Populate the displacements array */
@@ -145,7 +148,9 @@ int main(int argc, char * argv[])
             printMatrix(&matrix[0][0], n, n);
             cout << endl;
         }
-        MPI_Barrier(MPI_COMM_WORLD);      /* for printint coherently */
+        MPI_Barrier(MPI_COMM_WORLD);      /* for printing coherently */
+        usleep(100000);
+        MPI_Barrier(MPI_COMM_WORLD);
     }
 
     MPI_Finalize();