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cbsmith
on Aug 10, 2016
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A Comprehensive Study on the Energy Efficiency of ...
Looking forward to the days I can compile code with a "-Oe" to optimize for energy efficiency. ;-)
corysama
on Aug 10, 2016
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You laugh. Between servers and mobile that option is long overdue.
cbsmith
on Aug 10, 2016
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Oh, it'd be nice, but it probably makes more sense to have handle that kind of thing with a JIT runtime.
cbsmith
on Aug 10, 2016
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I'm surprised I got downgraded. What is most power efficient varies a lot not just based on machine, but based on the machine context.
adrianN
on Aug 10, 2016
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-O3 is probably an excellent approximation. Faster programs tend to use less energy.
ghlp
on Aug 10, 2016
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Not necessarily true. Please check:
http://arcade.cs.columbia.edu/energy-oopsla14.pdf
cbsmith
on Aug 10, 2016
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-O3 unlocks a number of optimizations that are kind of the opposite of power efficient... at least, depending on the CPU that executes them.
jkot
on Aug 10, 2016
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Spin locks are not very power efficient.
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