+> [84.033200] node-11.acme.org send node-0.acme.org 4167312.000000 # 3@task1_o3_end
+> [84.067138] node-0.acme.org recv node-11.acme.org 4167312.000000 # 3@task1_o3_end
+> [0.000000] node-0.acme.org send node-1.acme.org 1000000.000000 # root_i1_1@task1
+> [0.016600] node-1.acme.org recv node-0.acme.org 1000000.000000 # root_i1_1@task1
+> [42.016600] node-1.acme.org send node-11.acme.org 1000000.000000 # 1@task1_o1_3@task1
+> [42.033200] node-11.acme.org recv node-1.acme.org 1000000.000000 # 1@task1_o1_3@task1