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Performance prediction
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<p>In <a href="/facts/Computer_science/lN3pEyPz">computer science</a>, performance prediction means to estimate the execution time or other performance factors (such as <a href="/facts/CPU_cache/x8BYFcdv">cache</a> misses) of a program on a given computer. It is being widely used for computer architects to evaluate new computer designs, for <a href="/facts/Compiler/WNfCDFJe">compiler</a> writers to explore new optimizations, and also for advanced developers to tune their programs. </p><p>There are many approaches to predict program 's performance on computers. They can be roughly divided into three major categories: </p> <ul><li>simulation-based prediction</li> <li>profile-based prediction</li> <li>analytical modeling</li></ul>