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Autocloud, or how to use your car battery to save energy!

Autocloud, or how to use your car battery to save energy!. Jon Crowcroft, http://www.cl.cam.ac.uk/~jac22. The Wires run hot. Assume all our vehicles are electric. That represents storage for about 30% of UK electricity production for a day

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Autocloud, or how to use your car battery to save energy!

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  1. Autocloud, or how to use your car battery to save energy! Jon Crowcroft, http://www.cl.cam.ac.uk/~jac22

  2. The Wires run hot

  3. Assume all our vehicles are electric • That represents storage for about 30% of UK electricity production for a day • The Internet is using between 5&10% of electricity 24*7 • Is there some way to make good use of all that energy storage in parked cars?

  4. Idea - distribute cloud to every car • Lots of small data centers in car boot • Can deliver service locally (lower latency) • Can use microgenerated power locally (when not being used to charge car) • Can use battery power, when microgeneration being sent up to the grid • Can run MORE computers for LESS energy • Because they can run at lower speed (half speed is 4 times less power…) • They use green energy • They use off peak energy • They use energy otherwise lost in up-grid transmission

  5. How big is a small data center? • There are ~1,000,000 CPUs in a big one • Today’s rack mounted system might be 4-16 core • But tomorrow, see 1000 core (ARM) • So 10% of big data center in car boot • Smaller than battery

  6. Need to plug fiber as well as copper • Copper to charge/discharge battery • Fiber to charge/discharge data • Could also connect data via wireless HDMI (6-7Gbps) • Or ultra-wideband over powerline:) • Could also usefully plug in heat exchanger:) • Battery + Microgeneration is equivalent to time and space shifting power generation/consumption • Data Store/CPU in car also lets you do spatial&time shifting of Cloud

  7. Allow for battery life redux • So if we discharge the battery • To run the cloud, • We might half the battery life • Need to allow for this in calca • Doesn’t make much of a difference really • In fact, decentralizing the cloud gets rid of the heat dissipation problem • reducing power consumption (PUE) by 30-40% right away

  8. Take Homes • We can make the web/cloud/internet green • We can do it by distributing it into cars • If microgeneration and car batteries combined • Combined bits and power • Combined heat+data • Could look at regenerative breaking to spin up the disks too:) • Could call it: • Time And Relative Dimensions in Computer Engineering • (TARDICE:) • or • Saving Cycles in Your Garage

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