How to Benchmark Code Execution Times on Intel IA-32 and IA-64 ...
How to Benchmark Code Execution Times on Intel IA-32 and IA-64 ...
How to Benchmark Code Execution Times on Intel IA-32 and IA-64 ...
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<str<strong>on</strong>g>How</str<strong>on</strong>g> <str<strong>on</strong>g>to</str<strong>on</strong>g> <str<strong>on</strong>g>Benchmark</str<strong>on</strong>g> <str<strong>on</strong>g>Code</str<strong>on</strong>g> <str<strong>on</strong>g>Executi<strong>on</strong></str<strong>on</strong>g> <str<strong>on</strong>g>Times</str<strong>on</strong>g> <strong>on</strong> <strong>Intel</strong> ® <strong>IA</strong>-<strong>32</strong><br />
<strong>and</strong> <strong>IA</strong>-<strong>64</strong> Instructi<strong>on</strong> Set Architectures<br />
Both the variance of variances <strong>and</strong> the variance of the minimum values are zero.<br />
This means that this improved benchmarking method is completely ergodic<br />
(between different ensembles the maximum fluctuati<strong>on</strong> of the variance is 1 clock<br />
cycle <strong>and</strong> the minimum value is perfectly c<strong>on</strong>stant). This is the most important<br />
characteristic that we need for a method <str<strong>on</strong>g>to</str<strong>on</strong>g> be suitable for benchmarking<br />
purposes.<br />
For completeness, Figure 3 <strong>and</strong> Figure 4 show the same graphic analysis as d<strong>on</strong>e<br />
above in Secti<strong>on</strong> 3.2.1.<br />
Figure 3. Minimum Value Behavior Graph 3<br />
graph3<br />
50<br />
45<br />
40<br />
35<br />
clock cycles<br />
30<br />
25<br />
20<br />
minimum value<br />
15<br />
10<br />
5<br />
0<br />
1 54 107 160 213 266 319 372 425 478 531 584 637 690 743 796 849 902 955<br />
ensembles<br />
19
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