p0 init
p1 init
p2 init

p0 comm_size 3
p0 send p1 1E7
p0 barrier
p0 compute 4.5E6

p1 comm_size 3
p1 recv p0
p1 barrier
p1 compute 4E6

p2 comm_size 3
p2 barrier
p2 compute 4E6

p0 finalize
p1 finalize
p2 finalize