Some key options for greener compute include

• Use of GPU or Xeon Phi
• Reduced precision generally throughout a simulation (eg finding area of a global minimum), with "double precision" only where required (eg finding exact value of minimum)
• inexact (or "pruned") hardware eg see Duben, McNamara and Palmer's recent works
  • On the use of inexact, pruned hardware in atmospheric modelling, Philos Trans A Math Phys Eng Sci (2014)
  • The use of imprecise processing to improve accuracy in weather & climate prediction, Journal of Computational Physics (2014)
• slow computing (more to follow)

Related Articles

• HEC's Greener Compute support pages and news & views
• Latest tweets on #greenerCompute
• Who's who from Adept to Oxford
• Some high level approaches to implementing Greener Compute
• Discussion on what to measure and ideas on how to do so
• Determining the Environmental Footprint of High End Compute
• UK's Greenest High End Compute (2014)