0 init
1 init
2 init

0 Irecv 1 2000
1 Isend 0 2000
2 Irecv 1 3000

0 Irecv 2 3000
1 Isend 2 3000
2 Isend 0 3000

0 waitAll
1 waitAll
2 waitAll

0 finalize
1 finalize
2 finalize
