Omit MPIBarrier

Signed-off-by: Yuki Iwai <[email protected]>

Author: tenzen-y

examples/v2beta1/pi/pi.cc

@@ -46,7 +46,7 @@ int main(int argc, char *argv[]) {
     double pi = 4 * (double)total_count / (double)(worker_tests) / (double)(workers);
     printf("pi is approximately %.16lf\n", pi);
   }
-  MPI_Barrier(MPI_COMM_WORLD);
+//  MPI_Barrier(MPI_COMM_WORLD);
   MPI_Finalize();
   return 0;
 }