0 init
1 init
2 init

0 bcast 5e4
1 bcast 5e4
2 bcast 5e4

0 compute 5e8
1 compute 2e8
2 compute 5e8

0 bcast 5e4
1 bcast 5e4
2 bcast 5e4

0 compute 5e8
1 compute 2e8
2 compute 5e8

0 reduce 5e4 5e8
1 reduce 5e4 5e8
2 reduce 5e4 5e8

0 finalize
1 finalize
2 finalize