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cool machines B


Why supercomputers are becoming


Liquid cooling can take many forms but expertise from embedded systems can also point the way to a green future for HPC, as Tom Wilkie discovers


y the time this issue of Scientific Computing World leaves the printers, Europe’s first high- performance cluster to be cooled


by total immersion in mineral oil will have started operations at the University of Vienna. Te official inauguration will take place later, in the presence of local dignitaries.


30 SCIENTIFIC COMPUTING WORLD


But the Netherlands-based integrator ClusterVision, which provided the machine, is already working on another total immersion machine for a customer in the UK. A slightly different design, this cluster is due to become operational by the end of the summer. Te energy needs of Exascale, as discussed in John Barr’s article on page 22, are driving


a search for high-tech ways of reducing power consumption, including: low-power consumption chips from mobile and embedded applications; redesigning the way data is moved on the chips and in the machine; and rescheduling jobs to be energy rather than compute efficient. But electricity is expensive in Europe today, and that cost will only rise into the


@scwmagazine l www.scientific-computing.com


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