title: Where does super-linear speedup come from?
body: <p>In parallel computing theoretically super-linear speedup is not possible. But in practice we do see such cases. <a href="https://en.wikipedia.org/wiki/Speedup#Super-linear_speedup" rel="noreferrer">One reason is cache effect</a> but I fail to understand what does it play. Also, there are other things involved but what are they? In summary,</p>
  
  <blockquote>
    <p>How are super-linear speedups possible?</p>
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  <p>I'm a beginner with respect to parallel computing.</p>