> 5 5 2 smpi_replay_run_init "0 1 0"
> 6 0 2 1 0 "rank-1"
> 6 0 3 1 0 "rank-2"
-> 12 0 2 1 4
> 12 0 2 1 5
> 13 0 2 1
-> 12 0 2 2 4
> 12 0 2 2 5
> 13 0 2 2
-> 12 0 2 3 4
> 12 0 2 3 5
> 13 0 2 3
> 5 6 2 action_bcast "0 0.78 0.39"
> 12 0 2 1 6
-> 12 0 2 3 6
> 12 0 2 2 6
+> 12 0 2 3 6
> 13 0 2 1
> 12 0 2 1 4
> 13 0.015036 2 2