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

Explore the concept of distributing cloud services to cars, utilizing energy storage in parked vehicles for running small data centers. Save energy, reduce power consumption, and make the internet greener by combining microgeneration and car batteries.

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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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