-> [0.000000] node-0.acme.org send node-10.acme.org 1000000.000000 # root_i2_2@task2
-> [0.016600] node-10.acme.org recv node-0.acme.org 1000000.000000 # root_i2_2@task2
-> [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
-> [42.016600] node-10.acme.org send node-11.acme.org 1000000.000000 # 2@task2_o2_3@task1
-> [42.033200] node-11.acme.org recv node-10.acme.org 1000000.000000 # 2@task2_o2_3@task1