+#!/usr/bin/env tesh
+
+$ $SG_TEST_EXENV ${bindir:=.}/s4u-barrier 1
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Spawning 0 workers
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Bye
+
+$ $SG_TEST_EXENV ${bindir:=.}/s4u-barrier 2
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Spawning 1 workers
+> [Jupiter:worker:(2) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(2) 0.000000] [s4u_test/INFO] Bye
+
+$ $SG_TEST_EXENV ${bindir:=.}/s4u-barrier 3
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Spawning 2 workers
+> [Jupiter:worker:(2) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(3) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(2) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(3) 0.000000] [s4u_test/INFO] Bye
+
+$ $SG_TEST_EXENV ${bindir:=.}/s4u-barrier 10
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Spawning 9 workers
+> [Jupiter:worker:(2) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(3) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(4) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(5) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(6) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(7) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(8) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(9) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Jupiter:worker:(10) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Waiting on the barrier
+> [Tremblay:master:(1) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(2) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(3) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(4) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(5) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(6) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(7) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(8) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(9) 0.000000] [s4u_test/INFO] Bye
+> [Jupiter:worker:(10) 0.000000] [s4u_test/INFO] Bye