OpenMP的性能数据

在SGI Origin 2000上得到的OpenMP FFT性能数据
不同线程数的性能(Mflops)
n
nrep
Mops
1
2
4
8
12
83333
35.85
28.0
63.7
127.5
241.5
25
40000
46.44
55.5
110.1
220.2
424.6
32
31250
50.00
54.2
108.5
193.9
320.0
50
20000
56.44
67.5
133.8
233.0
401.3
64
15625
60.00
80.8
163.4
256.0
548.6
100
10000
66.44
94.5
184.9
354.3
607.4
200
5000
76.44
111.2
212.7
465.9
752.6
400
2500
86.44
120.3
240.5
526.9
851.1
800
1250
96.44
119.8
242.0
514.3
822.9
1600
625
106.4
131.0
257.1
545.0
908.3
3200
312
116.3
96.6
193.3
391.6
708.6
6400
156
126.2
88.3
175.6
351.3
621.5
10000
100
132.9
88.6
173.6
347.1
654.2