200 PARALLEL ALGORITHMS
P 11 P 12 P 13 P 14
41
2
3
5
3548
763
30
1
9
6
4
8
7
2
4
3
1
P 21 P 22 P 23 P 24
■FIGURE 7.6C
P 11 multiplies the
next two values
and adds the result
to its register and
P 12 and P 21 multiply
their first two
numbers
P 11 P 12 P 13 P 14
4
5
3354
1764 42
42
3
16
9
4
510
2
8
7
4
3
1
■PFIGURE 7.6D 11 ,P 12 , and P 21 P 21 P 22 P 23 P 24
handle their next
two numbers, and
P 13 and P 22 join the
process