|By JCN Newswire||
|June 13, 2014 01:48 AM EDT||
Tokyo, June 13, 2014 - (JCN Newswire) - Fujitsu Laboratories Ltd. today announced the development of a receiver circuit capable of receiving communications at 56 Gbps. This marks the world's fastest data communications between CPUs equipped in next-generation servers.
In recent years, raising data-processing speeds in servers has meant increasing CPU performance, together with boosting the speed of data communications between chips, such as CPUs. However, one obstacle to this has been improving the performance of the circuits that correct degraded waveforms in incoming signals.
Fujitsu Laboratories has used a new "look-ahead" architecture in the circuit that compensates for quality degradation in incoming signals, parallelizing the processing and increasing the operating frequency for the circuit in order to double its speed.
This technology holds the promise of increasing the performance of next-generation servers and supercomputers.
Details of this technology are being presented at the 2014 Symposia on VLSI Technology and Circuits, opening June 9 in Hawaii (VLSI Circuits Presentation 11-2).
In order to enhance the performance of datacenters underpinning the spread of cloud computing in recent years, a need has arisen for servers that process data faster. While this can be achieved partly through faster CPUs, large-scale systems connecting many CPUs are also being built, and the amount of data transmitted, either within the same CPU-equipped chassis or across separate chassis, is growing dramatically. To cope with these volumes, data communication speeds in the current generation of servers is increasing from a few gigabits per second today to ten or more gigabits per second. Because it is anticipated that data processing volumes will continue to experience explosive growth, however, for the next generation of high-performance servers, the goal is to double current levels to 56 Gbps. Furthermore, the Optical Internetworking Forum (OIF) is moving forward on the standardization of 56 Gbps for the optical modules used for optical transmission between chassis.
An effective way to speed up the receiver circuit is to improve the processing performance of the decision feedback equalizer (DFE) circuit that compensates for the degraded input-signal waveform.The principle behind DFE is to correct the input signal based on the bit-value of the previous bit and to emphasize changes in the input signal, but the actual circuit design works by choosing between two predefined corrected candidates. If the previous bit value was a 0, the correction process would apply a positive correction to the input signal (additive) to emphasize the change from 0 to 1. If the previous bit value was 1, it would apply a negative correction to the input signal (subtractive) to emphasize the change from 1 to 0. If another 0 was received, the positive compensation would increase the signal level, but not to such a level as would create a problem for the 1/0 decision circuit.
In ordinary circuit designs that run at 56 Gbps, there are 16 DFE circuits coupled together. Using 4 DFE circuits as an example, they run at 1/4th the actual frequency. So for 28-Gbps communications rates, 1/4th of that is 142 picoseconds, and four bits-worth of compensation can be applied during that interval. But at 56 Gbps, 1/4th of that speed amounts to 71 picoseconds, during which time only 2 bits-worth of compensation can be applied, resulting in timing errors.
About the Technology
Fujitsu Laboratories took a new approach, a "look-ahead" method that 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. This shortens calculation times, resulting in a receiver circuit that can operate at 56 Gbps.
Features of the new technology are as follows:
In the existing method, the result of the previous bit's selection circuit (A) is implemented by a circuit combining the result of the selection circuit for the bit two bits previous (B) and the input signal for the selection circuit one bit previous (+/- compensation data) (C). In the look-ahead method, the input signal for the selection circuit one bit previous (+/- compensation data) (D) and the input signal for the selection circuit of the current bit (+/- compensation data) (E) are combined using a look-ahead circuit, and candidates for the selection circuit are pre-computed. Doing this relies on only the result from the selection circuit for the bit two bits previous, without using the result from the selection circuit for the bit one bit previous, while functioning essentially the same as the existing method.
2. Parallelized look-ahead processing using a hold circuit
Multiple look-ahead circuits that apply DFE one bit at a time can operate independently. Fujitsu Laboratories inserted a hold circuit between the selection circuit and look-ahead circuit, with the input and output of each hold circuit being synchronized, making it possible to parallelize these processes.
Because the calculation time for the look-ahead circuit is roughly the same as the selection time for the selector, overall calculation time is dependent on the number of selectors deciding based on data from two bits previous, so in a four-bit structure, that would be two. Running at 1/4th of 56 Gbps allows computations to be safely completed within 71 picoseconds. This makes it possible to receive data at 56 Gbps, doubling existing communications speeds.
This technology makes it possible to increase bandwidth of communications between CPUs in future servers and supercomputers, even if CPU performance doubles, without increasing pin counts, and will contribute to increased performance in large-scale systems where numerous CPUs are interconnected. In addition, it complies with standards for optical-module communications, and compared to the 400-Gbps Ethernet in OIF-CEI-28G optical-module communications, the number of circuits running in parallel (number of lanes) can be halved, allowing for smaller optical modules running on less power, and higher system performance.
Fujitsu Laboratories plans to apply this technology to the interfaces of CPUs and optical modules, with the goal of a practical implementation in fiscal 2016. The company is also considering applications to next-generation servers, supercomputers, and other products.
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
Fujitsu Limited Public and Investor Relations www.fujitsu.com/global/news/contacts/ +81-3-3215-5259
Copyright 2014 JCN Newswire. All rights reserved. www.japancorp.net
Organizations from small to large are increasingly adopting cloud solutions to deliver essential business services at a much lower cost. According to cyber security experts, the frequency and severity of cyber-attacks are on the rise, causing alarm to businesses and customers across a variety of industries. To defend against exploits like these, a company must adopt a comprehensive security defense strategy that is designed for their business. In 2015, organizations such as United Airlines, Sony...
Aug. 31, 2015 07:15 PM EDT Reads: 468
The Internet of Things is in the early stages of mainstream deployment but it promises to unlock value and rapidly transform how organizations manage, operationalize, and monetize their assets. IoT is a complex structure of hardware, sensors, applications, analytics and devices that need to be able to communicate geographically and across all functions. Once the data is collected from numerous endpoints, the challenge then becomes converting it into actionable insight.
Aug. 31, 2015 07:00 PM EDT
Puppet Labs has announced the next major update to its flagship product: Puppet Enterprise 2015.2. This release includes new features providing DevOps teams with clarity, simplicity and additional management capabilities, including an all-new user interface, an interactive graph for visualizing infrastructure code, a new unified agent and broader infrastructure support.
Aug. 31, 2015 06:30 PM EDT Reads: 515
Consumer IoT applications provide data about the user that just doesn’t exist in traditional PC or mobile web applications. This rich data, or “context,” enables the highly personalized consumer experiences that characterize many consumer IoT apps. This same data is also providing brands with unprecedented insight into how their connected products are being used, while, at the same time, powering highly targeted engagement and marketing opportunities. In his session at @ThingsExpo, Nathan Trel...
Aug. 31, 2015 06:00 PM EDT Reads: 242
Amazon and Google have built software-defined data centers (SDDCs) that deliver massively scalable services with great efficiency. Yet, building SDDCs has proven to be a near impossibility for ‘normal’ companies without hyper-scale resources. In his session at 17th Cloud Expo, David Cauthron, founder and chief executive officer of Nimboxx, will discuss the evolution of virtualization (hardware, application, memory, storage) and how commodity / open source hyper converged infrastructure (HCI) so...
Aug. 31, 2015 04:45 PM EDT
In their Live Hack” presentation at 17th Cloud Expo, Stephen Coty and Paul Fletcher, Chief Security Evangelists at Alert Logic, will provide the audience with a chance to see a live demonstration of the common tools cyber attackers use to attack cloud and traditional IT systems. This “Live Hack” uses open source attack tools that are free and available for download by anybody. Attendees will learn where to find and how to operate these tools for the purpose of testing their own IT infrastructu...
Aug. 31, 2015 04:30 PM EDT Reads: 444
The web app is agile. The REST API is agile. The testing and planning are agile. But alas, data infrastructures certainly are not. Once an application matures, changing the shape or indexing scheme of data often forces at best a top down planning exercise and at worst includes schema changes that force downtime. The time has come for a new approach that fundamentally advances the agility of distributed data infrastructures. Come learn about a new solution to the problems faced by software organ...
Aug. 31, 2015 04:30 PM EDT
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...
Aug. 31, 2015 03:15 PM EDT
IBM’s Blue Box Cloud, powered by OpenStack, is now available in any of IBM’s globally integrated cloud data centers running SoftLayer infrastructure. Less than 90 days after its acquisition of Blue Box, IBM has integrated its Blue Box Cloud Dedicated private-cloud-as-a-service into its broader portfolio of OpenStack® based solutions. The announcement, made today at the OpenStack Silicon Valley event, further highlights IBM’s continued support to deliver OpenStack solutions across all cloud depl...
Aug. 31, 2015 03:00 PM EDT Reads: 245
Red Hat is investing in Tesora, the number one contributor to OpenStack Trove Database as a Service (DBaaS) also ranked among the top 20 companies contributing to OpenStack overall. Tesora, the company bringing OpenStack Trove Database as a Service (DBaaS) to the enterprise, has announced that Red Hat and others have invested in the company as a part of Tesora's latest funding round. The funding agreement expands on the ongoing collaboration between Tesora and Red Hat, which dates back to Febr...
Aug. 31, 2015 02:45 PM EDT Reads: 368
With the proliferation of connected devices underpinning new Internet of Things systems, Brandon Schulz, Director of Luxoft IoT – Retail, will be looking at the transformation of the retail customer experience in brick and mortar stores in his session at @ThingsExpo. Questions he will address include: Will beacons drop to the wayside like QR codes, or be a proximity-based profit driver? How will the customer experience change in stores of all types when everything can be instrumented and a...
Aug. 31, 2015 02:30 PM EDT Reads: 454
The Internet of Things (IoT) is about the digitization of physical assets including sensors, devices, machines, gateways, and the network. It creates possibilities for significant value creation and new revenue generating business models via data democratization and ubiquitous analytics across IoT networks. The explosion of data in all forms in IoT requires a more robust and broader lens in order to enable smarter timely actions and better outcomes. Business operations become the key driver of I...
Aug. 31, 2015 02:30 PM EDT Reads: 413
While many app developers are comfortable building apps for the smartphone, there is a whole new world out there. In his session at @ThingsExpo, Narayan Sainaney, Co-founder and CTO of Mojio, will discuss how the business case for connected car apps is growing and, with open platform companies having already done the heavy lifting, there really is no barrier to entry.
Aug. 31, 2015 02:30 PM EDT Reads: 141
WSM International, the pioneer and leader in server migration services, has announced an agreement with WHOA.com, a leader in providing secure public, private and hybrid cloud computing services. Under terms of the agreement, WSM will provide migration services to WHOA.com customers to relocate some or all of their applications, digital assets, and other computing workloads to WHOA.com enterprise-class, secure cloud infrastructure. The migration services include detailed evaluation and planning...
Aug. 31, 2015 02:00 PM EDT Reads: 180
SYS-CON Events announced today that DataClear Inc. will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. The DataClear ‘BlackBox’ is the only solution that moves your PC, browsing and data out of the United States and away from prying (and spying) eyes. Its solution automatically builds you a clean, on-demand, virus free, new virtual cloud based PC outside of the United States, and wipes it clean...
Aug. 31, 2015 01:45 PM EDT Reads: 416