diff --git a/pipepar/lattice.c b/pipepar/lattice.c
index f7583e4..9472550 100644
--- a/pipepar/lattice.c
+++ b/pipepar/lattice.c
@@ -496,8 +496,10 @@ int main(int argc, char *argv[])
 	if (analyse_options(argc, argv))
 		exit(EXIT_FAILURE);
 
+	printf("-------- Beginning of computation --------\n");
 	if (compute_metrics())
 		exit(EXIT_FAILURE);
+	printf("-------- End of computation --------\n");
 
 	exit(EXIT_SUCCESS);
 }