Fujitsu's New Circuit Will Boost Server, Supercomputer Performance
Researchers have developed a circuit that will double the communication speed between CPUs, which is important in cloud computing.Fujitsu Laboratories is introducing a circuit that officials said could significantly speed up the performance of servers and supercomputers that are under increasing pressure from cloud computing environments to process data more quickly. The circuit will be able to move data between CPUs in the system at 56 gigabits per second, leveraging a new architecture Fujitsu officials have called "look ahead," which addresses the quality degradation in incoming signals, parallels the processing and increases the operating frequency, enabling the circuit to double its speed. Fujitsu Laboratories researchers presented its findings on the new circuit June 13 at the 2014 Symposia on VLSI Technology and Circuits in Honolulu. Standard practice for speeding up the data processing in servers has been through improving the performance of the CPU, including cranking up the speed of the data communications between the chips, company officials said. A challenge has been the degradation of waveforms of incoming signals, something circuits have had a difficult time addressing.
The "look ahead" architecture uses a decision feedback equalizer (DFE) to compensate for the degraded incoming data signals by correcting the input signal based on the bit-values within the signal. There are other circuit designs that run at 56G bps, but they use four 14G-bps circuits running in parallel. Fujitsu Laboratories researchers said their design reaches 56G bps with a single circuit.