Welcome!

News Feed Item

Fujitsu Develops Clock Distribution Circuit for High-Speed, Low-Power Data Transmission between CPUs

Contributes to the next generation of higher performance servers and supercomputers through a 20% reduction in transceiver circuit power consumption

Kawasaki, Japan and Sunnyvale, U.S., June 14, 2013 - (JCN Newswire) - Fujitsu Laboratories Limited and Fujitsu Laboratories of America, Inc. today announced the development of a clock distribution circuit that enables a 20% reduction in the power consumed by the transceiver circuits in next-generation servers that transmit data between CPUs.

In recent years, in order to improve the data processing performance of servers, in addition to improving CPU performance, there has been a need to increase the speeds at which data is transmitted between chips, such as CPUs, in a server system. On the other hand, as speeds have increased, more power is consumed by the clock distribution circuits on the transceiver circuits that transmit the data. Now, by building a tiny oscillator circuit into each transceiver and synchronizing the oscillators, Fujitsu researchers succeeded in developing a low-power clock distribution method that eliminates the need to use conventional clock distribution circuits.

It is expected that this technology will contribute to increasing the performance of the next generation of servers and supercomputers.

Details of this new technology will be presented at the 2013 Symposium on VLSI Circuits, an international conference on semiconductor circuit technology held in Kyoto beginning Tuesday, June 11, 2013 (presentation 19-2).

Background

In recent years, there has been a greater need for improvements in data processing performance for servers employed in datacenters that support cloud computing. This has led to enhancements in CPU performance, as well as the development of large-scale systems that connect large numbers of CPUs. As a result, the amount of data traffic exchanged between CPUs and peripheral devices has grown substantially. To accommodate this high volume of traffic, inter-processor data communications speeds in today's servers have increased from a few Gbps to tens of Gbps. In line with faster speeds, however, power consumption has also increased. For the next generation of high-performance servers, there is an increasing need to couple higher speed with low power consumption.

Technological Challenges

As inter-processor communications speeds have become faster between CPUs and other chips in server systems, the power consumed by transceiver circuits in transmitting the data has also increased. In particular, the proportion of the overall transceiver circuit's power consumption that is attributable to the clock distribution circuit has been growing. To make sure that the clock signal generated by the clock generator circuit is not attenuated and is able to be transmitted to each transceiver circuit, the clock distribution circuit consumes a considerable amount of power because of the relatively high signal amplification that is required over multiple stages. To achieve higher speeds with low power consumption, therefore, what has been needed is to reduce the power consumed by the transceiver circuit by developing a new, low-power clock distribution circuit.

Newly Developed Technology

By building a tiny oscillator circuit into each transceiver and synchronizing the oscillators, Fujitsu researchers succeeded in developing a low-power clock distribution method (figure 3) that eliminates the need to use conventional clock distribution circuits.

All of the reference clocks (oscillator output) are set so that they are synchronized with the clock generator output. As a result, the frequency and phase of the reference clock for each transceiver circuit match the frequency and phase of the clock generator output. Because the signal between each oscillator required for synchronization used less amplification compared to conventional clock signal transmissions, less power is consumed.

In achieving synchronization, a low amplification signal that is proportional to the amplification difference between neighboring oscillators is fed back into each oscillator (figure 4). Because this feedback is designed to drive the amplification difference to zero, ultimately the amplification difference becomes zero and the frequency and phase of the output clock for each oscillator become uniform. All neighboring oscillators are connected, with one connected to the clock generation circuit, meaning the operation of all oscillators is synchronized to the clock generation output. In this way, the generation and transmission of a low amplification differential signal enables the generation of multiple synchronized clocks.

This technology enabled a 75% reduction in the power consumed by the 16 GHz clock distribution circuit, resulting in a 20% reduction in the overall power consumed by the transceiver circuit.

Results

It is anticipated that the application of this technology will make a significant contribution to improving the performance of the next generation of servers and supercomputers.

Future Plans

Fujitsu Laboratories and Fujitsu Laboratories of America will work to apply this technology to product areas related to big data, such as the backplane interfaces that link printed circuit boards together in servers.


About Fujitsu Laboratories

Founded in 1968 as a wholly owned subsidiary of Fujitsu Limited, Fujitsu Laboratories Limited is one of the premier research centers in the world. With a global network of laboratories in Japan, China, the United States and Europe, the organization conducts a wide range of basic and applied research in the areas of Next-generation Services, Computer Servers, Networks, Electronic Devices and Advanced Materials. For more information, please see: http://jp.fujitsu.com/labs/en.

About Fujitsu Laboratories of America

Fujitsu Laboratories of America, Inc. is a wholly owned subsidiary of Fujitsu Laboratories Ltd. (Japan), focusing on research on Internet, interconnect technologies, software development and solutions for several industry verticals. Conducting research in an open environment, it contributes to the global research community and the IT industry. It is headquartered in Sunnyvale, CA. For more information, please see: www.fla.fujitsu.com.

About Fujitsu Limited

Fujitsu is the leading Japanese information and communication technology (ICT) company offering a full range of technology products, solutions and services. Approximately 170,000 Fujitsu people support customers in more than 100 countries. We use our experience and the power of ICT to shape the future of society with our customers. Fujitsu Limited (TSE: 6702) reported consolidated revenues of 4.4 trillion yen (US$47 billion) for the fiscal year ended March 31, 2013 For more information, please see www.fujitsu.com.



Source: Fujitsu Limited

Contact:
Fujitsu Limited
Public and Investor Relations
www.fujitsu.com/global/news/contacts/
+81-3-3215-5259

Technical Contacts:

Fujitsu Laboratories Ltd.
ICT Systems Laboratories
E-mail: [email protected]


Copyright 2013 JCN Newswire. All rights reserved. www.japancorp.net

More Stories By JCN Newswire

Copyright 2008 JCN Newswire. All rights reserved. Republication or redistribution of JCN Newswire content is expressly prohibited without the prior written consent of JCN Newswire. JCN Newswire shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon.

Latest Stories
With the Apple Watch making its way onto wrists all over the world, it’s only a matter of time before it becomes a staple in the workplace. In fact, Forrester reported that 68 percent of technology and business decision-makers characterize wearables as a top priority for 2015. Recognizing their business value early on, FinancialForce.com was the first to bring ERP to wearables, helping streamline communication across front and back office functions. In his session at @ThingsExpo, Kevin Roberts...
Cognitive Computing is becoming the foundation for a new generation of solutions that have the potential to transform business. Unlike traditional approaches to building solutions, a cognitive computing approach allows the data to help determine the way applications are designed. This contrasts with conventional software development that begins with defining logic based on the current way a business operates. In her session at 18th Cloud Expo, Judith S. Hurwitz, President and CEO of Hurwitz & ...
It's easy to assume that your app will run on a fast and reliable network. The reality for your app's users, though, is often a slow, unreliable network with spotty coverage. What happens when the network doesn't work, or when the device is in airplane mode? You get unhappy, frustrated users. An offline-first app is an app that works, without error, when there is no network connection.
Data-as-a-Service is the complete package for the transformation of raw data into meaningful data assets and the delivery of those data assets. In her session at 18th Cloud Expo, Lakshmi Randall, an industry expert, analyst and strategist, will address: What is DaaS (Data-as-a-Service)? Challenges addressed by DaaS Vendors that are enabling DaaS Architecture options for DaaS
One of the bewildering things about DevOps is integrating the massive toolchain including the dozens of new tools that seem to crop up every year. Part of DevOps is Continuous Delivery and having a complex toolchain can add additional integration and setup to your developer environment. In his session at @DevOpsSummit at 18th Cloud Expo, Miko Matsumura, Chief Marketing Officer of Gradle Inc., will discuss which tools to use in a developer stack, how to provision the toolchain to minimize onboa...
SYS-CON Events announced today that Catchpoint Systems, Inc., a provider of innovative web and infrastructure monitoring solutions, has been named “Silver Sponsor” of SYS-CON's DevOps Summit at 18th Cloud Expo New York, which will take place June 7-9, 2016, at the Javits Center in New York City, NY. Catchpoint is a leading Digital Performance Analytics company that provides unparalleled insight into customer-critical services to help consistently deliver an amazing customer experience. Designed...
With the proliferation of both SQL and NoSQL databases, organizations can now target specific fit-for-purpose database tools for their different application needs regarding scalability, ease of use, ACID support, etc. Platform as a Service offerings make this even easier now, enabling developers to roll out their own database infrastructure in minutes with minimal management overhead. However, this same amount of flexibility also comes with the challenges of picking the right tool, on the right ...
CIOs and those charged with running IT Operations are challenged to deliver secure, audited, and reliable compute environments for the applications and data for the business. Behind the scenes these tasks are often accomplished by following onerous time-consuming processes and often the management of these environments and processes will be outsourced to multiple IT service providers. In addition, the division of work is often siloed into traditional "towers" that are not well integrated for cro...
SYS-CON Events announced today that FalconStor Software® Inc., a 15-year innovator of software-defined storage solutions, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. FalconStor Software®, Inc. (NASDAQ: FALC) is a leading software-defined storage company offering a converged, hardware-agnostic, software-defined storage and data services platform. Its flagship solution FreeStor®, utilizes a horizonta...
With an estimated 50 billion devices connected to the Internet by 2020, several industries will begin to expand their capabilities for retaining end point data at the edge to better utilize the range of data types and sheer volume of M2M data generated by the Internet of Things. In his session at @ThingsExpo, Don DeLoach, CEO and President of Infobright, will discuss the infrastructures businesses will need to implement to handle this explosion of data by providing specific use cases for filte...
SYS-CON Events announced today that Pythian, a global IT services company specializing in helping companies adopt disruptive technologies to optimize revenue-generating systems, has been named “Bronze Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. Founded in 1997, Pythian is a global IT services company that helps companies compete by adopting disruptive technologies such as cloud, Big Data, advanced analytics, and DevO...
SYS-CON Events announced today that Avere Systems, a leading provider of enterprise storage for the hybrid cloud, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Avere delivers a more modern architectural approach to storage that doesn’t require the overprovisioning of storage capacity to achieve performance, overspending on expensive storage media for inactive data or the overbuilding of data centers ...
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management...
The Quantified Economy represents the total global addressable market (TAM) for IoT that, according to a recent IDC report, will grow to an unprecedented $1.3 trillion by 2019. With this the third wave of the Internet-global proliferation of connected devices, appliances and sensors is poised to take off in 2016. In his session at @ThingsExpo, David McLauchlan, CEO and co-founder of Buddy Platform, will discuss how the ability to access and analyze the massive volume of streaming data from mil...
SYS-CON Events announced today that Alert Logic, Inc., the leading provider of Security-as-a-Service solutions for the cloud, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Alert Logic, Inc., provides Security-as-a-Service for on-premises, cloud, and hybrid infrastructures, delivering deep security insight and continuous protection for customers at a lower cost than traditional security solutions. Ful...