Add timing for file IO

BasicSolver/3D-mpi/src/main.c

@@ -73,6 +73,7 @@ int main(int argc, char** argv)
         printf("Solution took %.2fs\n", timeStop - timeStart);
     }
 
+    timeStart       = getTimeStamp();
     double *pg, *ug, *vg, *wg;
 
     if (commIsMaster(&s.comm)) {
@@ -104,6 +105,11 @@ int main(int argc, char** argv)
         vtkVector(&opts, "velocity", (VtkVector) { ug, vg, wg });
         vtkClose(&opts);
     }
+    timeStop = getTimeStamp();
+
+    if (commIsMaster(&s.comm)) {
+        printf("Result output took %.2fs\n", timeStop - timeStart);
+    }
 
     commFinalize(&s.comm);
     return EXIT_SUCCESS;