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Tackling the Power and Energy Wall for Future HPC Systems

Dec 17, 2013 |

As the cost of powering a supercomputer or a datacenter increases, next generation exascale systems need to be considerably more power- and energy-efficient than current supercomputers to be of practical use. Unlike petascale systems, where the primary concern was performance, exascale systems need to climb the power and energy walls in order to deliver sustainable exaflops performance. Pacifi c Northwest Laboratory (PNNL) researchers are exploring holistically energy and power efficiency aspects at all levels of granularity, from processor architecture to system integration.

The Week in HPC Research

Apr 25, 2013 |

We’ve scoured the journals and conference proceedings to bring you the top research stories of the week. This diverse set of items includes advancements in petascale-era development environments; balancing performance with power efficiency; optimizing computer science instruction; and a possible path to extreme heterogeneity.

Revisiting Supercomputer Architectures

Dec 8, 2011 |

Additional performance increases for supercomputers are being confounded by three walls: the power wall, the memory wall and the datacenter wall (the “wall wall”). To overcome these hurdles, the market is currently looking to a combination of four strategies: parallel applications development, adding accelerators to standard commodity compute nodes, developing new purpose-built systems, and waiting for a technology breakthrough.