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====== Price-performance trend in top supercomputers ======

 //Published 08 November, 2017; last updated 13 November, 2017// 

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<p>A top supercomputer can perform a GFLOP for around $3, in 2017.</p>
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<p>The price of performance in top supercomputers continues to fall, as of 2016.</p>
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===== Details =====


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<p><a href="https://www.top500.org/lists/2017/06/">TOP500.org</a> maintains a list of top supercomputers and their performance on the Linpack benchmark. The figure below is based on empirical performance figures (‘Rmax’) from <a href="https://www.top500.org/lists/2017/06/">Top500</a> and price figures collected from a variety of less credible sources, for nine of the ten highest performing supercomputers (we couldn’t find a price for the tenth). Our data and sources are <a href="https://docs.google.com/spreadsheets/d/1nV6djZI7csDv_ewElbNKiQZVl36ViGyUEy_MSqk2krI/edit?usp=sharing">here</a>.</p>
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<p>Sunway Teihu Light performs the cheapest GFLOPS, at $2.94/GFLOPS. This is around one hundred times more expensive than peak theoretical performance of certain GPUs, but we do not know why there is such a difference (peak performance is generally higher than actual performance, but by closer to a factor of two).</p>
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<p>There appears to be a downward trend in price, but it is not consistent, and with so few data points its slope is ambiguous. The best price for performance roughly halved in the last 4-5 years, for a 10x drop in 13-17 years. The K computer in 2011 was much more expensive, but appears to have been substantially more expensive than earlier computers.</p>
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