From 90dbc4e17744f14a9c71256a9ce52f7df3349fb7 Mon Sep 17 00:00:00 2001
From: fredrikr79 <fredrikrobertsen7@gmail.com>
Date: Mon, 22 Sep 2025 16:43:45 +0200
Subject: [PATCH] ex3: task 2

---
 exercise3/wave_1d_parallel.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/exercise3/wave_1d_parallel.c b/exercise3/wave_1d_parallel.c
index ef9847c..39dd771 100644
--- a/exercise3/wave_1d_parallel.c
+++ b/exercise3/wave_1d_parallel.c
@@ -160,7 +160,17 @@ int main(int argc, char **argv) {
   // TASK: T2
   // Time your code
   // BEGIN: T2
+  if (comm_rank == ROOT)
+    gettimeofday(&t_start, NULL);
   simulate();
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  if (comm_rank == ROOT) {
+    gettimeofday(&t_end, NULL);
+
+    printf("Total elapsed time: %lf seconds\n",
+           WALLTIME(t_end) - WALLTIME(t_start));
+  }
   // END: T2
 
   domain_finalize();