p0 init
p1 init
p2 init

p0 comm_size 3
p0 bcast 5e8
p1 bcast 5e8
p2 bcast 5e8

p0 compute 5e8
p1 compute 2e8
p2 compute 5e8

p0 bcast 5e8
p1 bcast 5e8
p2 bcast 5e8

p0 compute 5e8
p1 compute 2e8
p2 compute 5e8

p0 reduce 5e8 5e8
p1 reduce 5e8 5e8
p2 reduce 5e8 5e8

p0 finalize
p1 finalize
p2 finalize