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John M. Drescher wrote: It's not really clear how to do this except avoid wasting cycles
Minimize hard disk IO?
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That's surely another. Probably more difficult depending on the problem and probably less fruitful in most applications being that most CPUs use 2 times the power what a hard drive uses at idle. and 5 to 15 times what a hard drive does when both are under full load.
John
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John M. Drescher wrote: It's not really clear how to do this
Easy: Don't use the processor and don't use the disk or anything else (or the program should immediately shut down the machine...) 
Regards
Thomas
www.thomas-weller.de
Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.
Programmer - an organism that turns coffee into software.
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I think this is an issue mainly on mobile devices, where battery power is at a premium.
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I don't do treehugging 
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The trees around here don't encourage hugging.
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If it's easy to maintain I don't have to run my development system as much.
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Yusuf.A wrote: Where are all the Green Developers
They have all moved back to Bob's home planet.
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For almost everything I developed in the last ten years it was either memory or IO that was the bottleneck.
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Then you're just not trying hard enough!
cheers,
Chris Maunder
The Code Project Co-founder
Microsoft C++ MVP
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