[LINK] Energy measures for e-Tax tender

Michael Still mikal at stillhq.com
Fri Nov 28 16:21:47 AEDT 2008

Bernard Robertson-Dunn wrote:
> Tom,
> As far as I can tell this tender is for the development and maintenance 
> of software. Hardware is out of scope and is probably the existing ATO 
> environment. There is no indication that any extra hardware level 
> infrastructure will be required.
> Can you explain how a software developer can tell how much energy and 
> CO2 emissions his code will require, given that (s)he has no knowledge 
> of, or control over, the infrastructure environment on which it will run?

Well, that's not 100% true. I'm sure many software developers say things 
like "this system can do XXX transactions per second, per machine". 
Therefore the design of the system can heavily influence its effect on 
the environment, largely by forcing the deployment of more machines to 
make it scale.

I wonder what percentage of carbon outputs world wide are from datacenters?


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