Cloud Computing: Fujitsu 56 Gbps circuit doubles communication speeds between CPUs

Grazed from ComputerWorld.  Author: Tim Hornyak.

Fujitsu has developed a circuit that could double data rates between CPUs in servers and supercomputers.  The receiver circuit can attain speeds of 56 Gbps, Fujitsu Laboratories said Friday, claiming the circuit was the fastest of its kind in the world.  The technology could greatly boost performance in servers, cloud computing and supercomputers, the company said. Research presented by Fujitsu Labs on Friday at the 2014 Symposia on VLSI Technology and Circuits in Hawaii detailed the innovation.

It uses decision feedback equalizer circuits to compensate for degradation in incoming data signals. By using an anticipatory "look ahead" architecture in the circuit to correct for degradation problems, Fujitsu Labs was able to increase the operating frequency of the circuit and double its speed...

The approach "can be implemented as a parallel process, pre-calculating two candidates based on the selection result for the previous bit, and simultaneously deciding the value of the previous bit and the current bit after deciding the value of the bit two bits previous," Fujitsu Labs said in a statement...

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