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Paula Hay

Peak Oil for Programmers, Part II « ram them down - 0 views

  • Google is the world’s largest electric utility customer It used to be the case that people who were in charge of serious computing performance measured FLOPS. Now they measure FLOPS per watt. How fast one computer may be is irrelevant. Ken Brill, director of the Uptime Institute, describes how energy management has become the number one challenge in data center management.
  • programmers have ignored the energy dynamics of our work (and our white collar clients’) for too long, and that we won’t be able to get away with it for much longer.
  • I think it’s safe to say that in the US and many other countries, we have far exceeded the 20% spending on information that nature came up with
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  • As long as this is the paradigm for creating wealth, as it has been for several decades now, the only major question we need to ask about an investment is: what is the marginal value?
  • In the coming era of expensive energy, it will make sense only to fund those software projects that keep the overall IT investment at a reasonably small portion of revenues while producing a maximal effect on the ability to deliver hard goods and services.
  • Here’s a surprise: the human brain consumes 20% or more of the calories of a typical person.  There is evidence that for brain-intensive work, it goes even higher. When you realize that just three or four calories can produce a giant flame (skip to 2:40) we are talking serious energy behind every thought you think.  In fact, dealing with the heat load from the brain was a major bottleneck in human evolution. Let me state this a different way.  Nature has decided that for every human that the planet supports, at least twenty percent of the food energy we can scrape together is going to go to information processing — planning, remembering, analyzing, communicating — rather than actually doing stuff.  And this is before we spend a dime on technology, not to mention consultants and other brain workers whose bodies aren’t used that much.
  • But information is still special, and it has special limits that anyone who thinks and/or programs for a living should pay attention to in the context of the coming energy shortages.
  • o the extent that we can call something information, and take advantage of this wonderful copy-the-pattern-for-”free” property, it has value only if is ABOUT something that, ultimately, isn’t information.
  • It seems this all leads to a constraint: the total value of information in an economy is always less than the value of the non-information, i.e. the traditional goods and services.  This is because the value of information is a derivative of the “real stuff” it is about.
  • Now what I’m saying is if we don’t start helping our clients find huge efficiencies, if we don’t tackle the world’s toughest problems with everything good software can offer, in short, if we don’t stop working on boring crap, than many of us will be out of a job.
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    The energy dynamics of computing. Includes fascinating insight into the energy requirements of biological computing -- e.g., brain power. Fantastic, a must-read.
Energy Net

Meat & Dairy Matter - Changing Consumer Choices Can Cut Methane & Nitrous Oxide Emissio... - 1 views

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    "One more piece of information supporting how important your personal dietary choices are in dealing with climate change: New research published in the journal Global Environmental Change shows that by reducing the amount of meat and dairy eaten and changing farming practices, by 2055 we could reduce emissions of methane and nitrous oxide--two greenhouse gases far more potent than carbon dioxide--from agricultural sources by more than 80%. Summing up the research, study lead author Alexander Popp of the Potsdam Institute for Climate Impact Research says, "Meat and milk really matter. Reduced consumption could decrease the future emissions of nitrous oxide and methane from agriculture to levels below those of 1995." "
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