30 Dec '15, 5pm

Power Problems Threaten to Strangle Exascale Computing

Power Problems Threaten to Strangle Exascale Computing

The U.S. Department of Energy’s vision of a 20-MW exascale supercomputer would reserve 30 percent of the power budget for memory. That power budget goal will require memory-stacking architecture that improves on 3-D stacked DRAM, which puts towers of memory chips closer to a computer chip’s processor units. Such an arrangement means shorter interconnects between the units—and less power lost to capacitance and resistance when transferring bits of data. Even better, they also mean quicker communication [see “Memory in the Third Dimension ,” Spectrum , January 2014]. Stacked memory has already caught on in the broader computing industry. Before 2011, tech giants merely tinkered with it as “science fair projects,” says Robert Patti, chief technology officer and vice president of design engineering at Tezzaron Semiconductor, which has worked on U.S. government supercomputing p...

Full article: http://spectrum.ieee.org/computing/hardware/power-problem...

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Q&A: A Look Back and Ahead at Parallel Computing

electronicdesign.com 28 Dec '15, 11pm

Therefore, the next 10 years will be the coming-of-age for ubiquitous parallel computing, and we have multiple hardware an...