somehow profile=True causes a hang without gen_on_worker

Author: jlnav

libensemble/tests/functionality_tests/test_1d_sampling_with_profile.py

@@ -32,6 +32,7 @@
     libE_specs["profile"] = True
     libE_specs["safe_mode"] = False
     libE_specs["kill_canceled_sims"] = False
+    libE_specs["gen_on_worker"] = True
 
     sim_specs = {
         "sim_f": sim_f,