rb8.F Program
Description
File Name:rb8.F
Description:
The data access behaviour of rb8.F is equal to the
behaviour of rb6.F. Since
rb6.F suffers from register dependencies the
innermost loops were unrolled to enable better
instruction scheduling. To help the compiler, the
update statements were scheduled by hand.
Comment:
The cache behaviour should be equivalent too that
of rb6.F.
Results:
Memory access behaviour
| Size |
MBytes
/sec |
% of all access which go
into |
| ± |
1. Level |
2. Level |
3. Level |
Memory |
|
2 sweeps performed together |
| 16 |
1535.4 |
21.4 |
78.6 |
0.1 |
0.0 |
0.0 |
| 32 |
1626.8 |
22.2 |
76.7 |
1.1 |
0.0 |
0.0 |
| 64 |
1588.8 |
22.0 |
66.4 |
11.4 |
0.3 |
0.0 |
| 128 |
1333.1 |
21.9 |
53.1 |
22.3 |
2.7 |
0.0 |
| 256 |
1185.2 |
21.9 |
27.6 |
47.7 |
2.8 |
0.0 |
| 512 |
713.6 |
21.5 |
27.7 |
47.4 |
1.6 |
1.8 |
| 1024 |
625.2 |
21.3 |
25.2 |
47.6 |
4.1 |
1.8 |
| 2048 |
405.0 |
20.9 |
31.9 |
33.5 |
11.9 |
1.8 |
|
3 sweeps performed together |
| 16 |
1551.3 |
20.5 |
79.4 |
0.0 |
0.0 |
0.0 |
| 32 |
1639.3 |
21.4 |
77.5 |
1.0 |
0.1 |
0.0 |
| 64 |
1598.8 |
21.5 |
66.9 |
11.4 |
0.3 |
0.0 |
| 128 |
1338.5 |
21.7 |
53.4 |
22.2 |
2.7 |
0.0 |
| 256 |
1190.8 |
21.6 |
27.8 |
47.8 |
2.8 |
0.0 |
| 512 |
716.9 |
21.4 |
28.0 |
47.2 |
1.6 |
1.8 |
| 1024 |
628.9 |
21.2 |
25.3 |
47.7 |
4.0 |
1.8 |
| 2048 |
406.2 |
21.0 |
31.8 |
33.5 |
11.9 |
1.9 |
Runtime behaviour
| Size |
MFlops
/sec |
% of cycles used for |
| ± |
Base |
Exec |
Cache |
DTB |
Branch |
R dep |
Nops |
| 2 sweeps performed
together |
| 16 |
348.8 |
8.1 |
106.6 |
63.5 |
0.3 |
4.4 |
5.1 |
18.4 |
6.8 |
| 32 |
373.2 |
8.2 |
106.1 |
65.9 |
0.2 |
4.8 |
6.0 |
14.2 |
6.8 |
| 64 |
363.5 |
7.8 |
105.5 |
65.5 |
0.7 |
4.1 |
7.5 |
14.4 |
5.5 |
| 128 |
304.6 |
7.0 |
103.6 |
56.1 |
14.1 |
3.5 |
6.2 |
12.0 |
4.7 |
| 256 |
271.1 |
6.4 |
103.2 |
50.5 |
18.0 |
8.0 |
5.4 |
10.7 |
4.2 |
| 512 |
162.4 |
4.4 |
101.1 |
30.9 |
49.1 |
3.2 |
4.5 |
6.6 |
2.4 |
| 1024 |
141.8 |
5.0 |
101.0 |
25.9 |
50.5 |
9.6 |
2.1 |
5.4 |
2.5 |
| 2048 |
91.4 |
5.6 |
100.4 |
17.6 |
58.9 |
9.3 |
1.6 |
6.9 |
0.5 |
| 3 sweeps performed
together |
| 16 |
348.7 |
8.3 |
106.3 |
61.9 |
0.2 |
4.2 |
5.7 |
19.6 |
6.4 |
| 32 |
372.3 |
8.6 |
106.0 |
65.1 |
0.2 |
5.0 |
6.0 |
14.4 |
6.7 |
| 64 |
363.6 |
8.0 |
105.5 |
65.7 |
0.7 |
4.0 |
7.2 |
14.4 |
5.5 |
| 128 |
305.1 |
7.2 |
103.4 |
56.1 |
13.7 |
3.5 |
6.2 |
12.0 |
4.7 |
| 256 |
271.2 |
6.0 |
102.0 |
50.3 |
19.4 |
4.9 |
7.3 |
10.1 |
4.0 |
| 512 |
162.8 |
4.6 |
101.5 |
29.8 |
49.8 |
5.1 |
3.1 |
6.6 |
2.5 |
| 1024 |
142.5 |
4.9 |
101.0 |
26.0 |
50.6 |
9.5 |
2.1 |
5.4 |
2.5 |
| 2048 |
91.8 |
5.6 |
100.4 |
17.6 |
58.9 |
9.3 |
1.6 |
6.9 |
0.5 |
Table
explanation
|
