27
What Happens
abcd
0000
0
P0
ddcb
0000
0
P1
abcd
0000
0
P2
eeeh
0000
0
P3
•Send
left
•Compare
+1
•Compare
+2
•Local
+
•Accum
Tree
•Bdcast
Tree
abcddd
0001
2
P0
ddcbab
0000
2
P1
abcdee
0000
2
P2
eeeh
1000
2
P3
ß